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    <title language="eng">Comparison of resonance and hydraulic testing on large scale fatigue tests of welded tubular joints for offshore wind turbine foundations</title>
    <abstract language="eng">Jackets structures as foundations for offshore wind energy converters are efficient solutions. But these structures require the welding of a large number of joints. The design of the Jacket structures is typically driven by fatigue. Therefore, consequently the fatigue strength of the joints is a primary parameter for an optimized design. The present paper investigates if tubular joints produced by manual welding using the current techniques have an improved performance compared to the relevant standards that are applied for the design of the foundations. To investigate this, 4 full-scale tests in geometry representative of a structure were performed, 2 using a resonance method and 2 using a three-point bending method with hydraulic actuators. The results are similar, with cracks initiated early and extending extensively before failure. The results are very close to the current T-curve from DNV RP-C203 applied for tubular joints.</abstract>
    <parentTitle language="eng">International Journal of Fatigue</parentTitle>
    <identifier type="doi">10.1016/j.ijfatigue.2024.108797</identifier>
    <identifier type="issn">0142-1123</identifier>
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    <author>Philippe Thibaux</author>
    <author>Marc Thiele</author>
    <author>Jeroen Van Wittenberghe</author>
    <author>Matthias Baeßler</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Fatigue</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Tubular joints</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Resonance testing</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Steel welds</value>
    </subject>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="institutes" number="">7 Bauwerkssicherheit</collection>
    <collection role="institutes" number="">7.2 Ingenieurbau</collection>
    <collection role="themenfelder" number="">Energie</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="themenfelder" number="">Windenergie</collection>
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    <publisherName>Ernst &amp; Sohn</publisherName>
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    <title language="deu">Bestandteile Digitaler Zwillinge im Erhaltungsmanagement von Verkehrsbrücken</title>
    <title language="eng">Components of digital twins in the operation and maintenance management of traffic bridges</title>
    <abstract language="deu">Digitale Zwillinge werden zukünftig ein integraler Bestandteil des Erhaltungsmanagements von Verkehrsbrücken sein. In diesem Beitrag wird argumentiert, dass sie nicht nur als digitale Abbilder physikalischer Bauwerke verstanden werden sollten, sondern als eine umfassende digitale Methode, die durch die Integration von Datenerfassung, Erhaltungsmaßnahmen, Datenmanagement, Bauwerksbewertung und Entscheidungsunterstützung die Bauwerksüberwachung und ‐erhaltung verbessert. In diesem Zusammenhang wird betont, dass der Übergang von der reaktiven zur prädiktiven Erhaltung durch den Einsatz von Digitalen Zwillingen nur dann realisierbar ist, wenn neben den erforderlichen diagnostischen und prognostischen Zustandsanalysen auch Methoden zur Optimierung von Entscheidungen über Datenerfassung und Erhaltungsmaßnahmen implementiert werden. Zur Veranschaulichung der Diskussion werden in diesem Beitrag exemplarisch zwei Bestandteile eines Digitalen Zwillings für das Erhaltungsmanagement von Verkehrsbrücken am Beispiel einer Eisenbahnbrücke demonstriert. Dabei wird zum einen gezeigt, wie Monitoringdaten mittels eines Datenmanagementsystems strukturiert verwaltet und für angeknüpfte Analysen bereitgestellt werden. Zum anderen erfolgt im Rahmen einer bauwerksspezifischen Einwirkungsermittlung eine Zugidentifikation anhand von gemessenen Schwellenschwingungen.</abstract>
    <abstract language="eng">Digital twins will become an integral part of the operation and maintenance management of traffic bridges in the future. This paper argues that they should not only be understood as digital representations of physical structures but as a digital methodology that enhances the operation and maintenance of bridges through the integration of data collection, maintenance actions, data management, structural assessment, and decision support. In this context, it is emphasized that the transition from reactive to predictive maintenance using digital twins can only be achieved if, in addition to the necessary diagnostic and prognostic condition analyses, methods for optimizing decisions on data collection and maintenance actions are also implemented. To illustrate this discussion, two key components of a digital twin for the operation and maintenance management of traffic bridges are demonstrated using a railway bridge as an example. First, it is shown how monitoring data can be systematically managed and made available for subsequent analyses through a data management system. Second, train identification based on measured sleeper vibrations is conducted as part of an object-specific load assessment.</abstract>
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    <author>Ronald Schneider</author>
    <author>Patrick Simon</author>
    <author>Ralf Herrmann</author>
    <author>Falk Hille</author>
    <author>Matthias Baeßler</author>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Digitale Zwillinge</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Erhaltung</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Inspektion</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Monitoring</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Brücken</value>
    </subject>
    <collection role="ddc" number="624">Ingenieurbau</collection>
    <collection role="institutes" number="">7 Bauwerkssicherheit</collection>
    <collection role="institutes" number="">7.2 Ingenieurbau</collection>
    <collection role="themenfelder" number="">Infrastruktur</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="themenfelder" number="">Verkehrsinfrastrukturen</collection>
  </doc>
  <doc>
    <id>55492</id>
    <completedYear/>
    <publishedYear>2022</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst>163</pageFirst>
    <pageLast>172</pageLast>
    <pageNumber/>
    <edition/>
    <issue>3</issue>
    <volume>99</volume>
    <type>article</type>
    <publisherName>Ernst &amp; Sohn</publisherName>
    <publisherPlace>Berlin</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
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    <title language="deu">Maintalbrücke Gemünden: Bauwerksmonitoring und -identifikation aus einem Guss</title>
    <title language="eng">Maintalbrücke Gemünden – Integrated structural health monitoring and UAS diagnostics</title>
    <abstract language="deu">Die Infrastruktursysteme der Industriestaaten erfordern heute und in Zukunft ein effizientes Management bei alternder Bausubstanz, steigenden Lasten und gleichbleibend hohem Sicherheitsniveau. Digitale Technologien bieten ein großes Potenzial zur Bewältigung der aktuellen und künftigen Herausforderungen im Infrastrukturmanagement. Im BMBF-geförderten Projekt Bewertung alternder Infrastrukturbauwerke mit digitalen Technologien (AISTEC) wird untersucht, wie unterschiedliche Technologien und deren Verknüpfung gewinnbringend eingesetzt werden können. Am Beispiel der Maintalbrücke Gemünden werden ein sensorbasiertes Bauwerksmonitoring, bildbasierte Inspektion mit durch Kameras ausgestatteten Drohnen (UAS) und die Verknüpfung digitaler Bauwerksmodelle umgesetzt. Die aufgenommenen Bilder dienen u. a. als Grundlage für spätere visuelle Anomaliedetektionen und eine 3D-Rekonstruktion, welche wiederum für die Kalibrierung und Aktualisierung digitaler Tragwerksmodelle genutzt werden. Kontinuierlich erfasste Sensordaten werden ebenfalls zur Kalibrierung und Aktualisierung der Tragwerksmodelle herangezogen. Diese Modelle werden als Grundlage für Anomaliedetektionen und perspektivisch zur Umsetzung von Konzepten der prädiktiven Instandhaltung verwendet. Belastungsfahrten und historische Daten dienen in diesem Beitrag der Validierung von kalibrierten Tragwerksmodellen.</abstract>
    <abstract language="eng">Infrastructure systems of industrialised countries today and in the future require efficient management with an ageing stock, increasing loads while simultaneously maintaining a high level of safety. Digital technologies offer great potential for the current and future challenges in infrastructure management. The BMBF-funded project AISTEC is investigating how the individual technologies and their interconnection can be used beneficially. With the Maintalbrücke in Gemünden as an exemplary application, sensor-based structural monitoring, image-based inspection using unmanned aircraft systems (UAS) equipped with cameras and the integration of digital structural models are being implemented. The recorded images serve, among others, as basis for subsequent anomaly detection and a 3D reconstruction, which in turn are used for updating digital structural models. Continuously recorded sensor data is used to update the parameters of the structural models, which in turn provide the basis for predictive maintenance. Load tests are used to validate the models.</abstract>
    <parentTitle language="deu">Bautechnik</parentTitle>
    <identifier type="issn">0932-8351</identifier>
    <identifier type="doi">10.1002/bate.202100102</identifier>
    <identifier type="urn">urn:nbn:de:kobv:b43-554924</identifier>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="date_peer_review">16.08.2022</enrichment>
    <enrichment key="PaperofMonth">1</enrichment>
    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>Patrick Simon</author>
    <author>M. Helmrich</author>
    <author>Ralf Herrmann</author>
    <author>Ronald Schneider</author>
    <author>Matthias Baeßler</author>
    <author>S. Lorelli</author>
    <author>G. Morgenthal</author>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Bauwerksüberwachung</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Strukturmonitoring</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Structural Health Monitoring</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Modell-Update</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>UAS</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Belastungstest</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Structural system identification</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Structural health monitoring</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Model update</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>UAS</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Load tests</value>
    </subject>
    <collection role="ddc" number="624">Ingenieurbau</collection>
    <collection role="institutes" number="">7 Bauwerkssicherheit</collection>
    <collection role="institutes" number="">7.2 Ingenieurbau</collection>
    <collection role="themenfelder" number="">Infrastruktur</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei für die Öffentlichkeit verfügbar ("Open Access")</collection>
    <collection role="unnumberedseries" number="">Wissenschaftliche Artikel der BAM</collection>
    <thesisPublisher>Bundesanstalt für Materialforschung und -prüfung (BAM)</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-bam/files/55492/10_1002_bate_202100102_preprint.pdf</file>
  </doc>
  <doc>
    <id>60504</id>
    <completedYear/>
    <publishedYear>2024</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1</pageFirst>
    <pageLast>9</pageLast>
    <pageNumber/>
    <edition/>
    <issue>18</issue>
    <volume>2647</volume>
    <type>article</type>
    <publisherName>IOP Publishing</publisherName>
    <publisherPlace>Bristol</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Vibration-based system identification of a large steel box girder bridge</title>
    <abstract language="eng">The Bundesanstalt für Materialforschung und -prüfung (BAM) collaborates with TNO to develop a software framework for automated calibration of structural models based on monitoring data. The ultimate goal is to include such models in the asset management process of engineering structures. As a basis for developing the framework, a multi-span road bridge consisting of ten simply supported steel box girders was selected as a test case. Our group measured output-only vibration data from one box girder under ambient conditions. From the data, we determined eigenfrequencies and mode shapes. In parallel, we developed a preliminary structural model of the box girder for the purpose of predicting its modal properties. In this contribution, we provide an overview of the measurement campaign, the operational modal analysis, the structural modeling and qualitatively compare the identified with the predicted modes. As an outlook, we discuss the further steps in the calibration process and future applications of the calibrated model.</abstract>
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    <author>Ronald Schneider</author>
    <author>Patrick Simon</author>
    <author>Falk Hille</author>
    <author>Ralf Herrmann</author>
    <author>Matthias Baeßler</author>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Verkehrsinfrastukturen</value>
    </subject>
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      <language>eng</language>
      <type>uncontrolled</type>
      <value>SHM</value>
    </subject>
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      <language>eng</language>
      <type>uncontrolled</type>
      <value>Model updating</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>System identification</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Operational modal analysis</value>
    </subject>
    <collection role="ddc" number="624">Ingenieurbau</collection>
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    <collection role="institutes" number="">7.2 Ingenieurbau</collection>
    <collection role="themenfelder" number="">Infrastruktur</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei für die Öffentlichkeit verfügbar ("Open Access")</collection>
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    <collection role="themenfelder" number="">Verkehrsinfrastrukturen</collection>
    <thesisPublisher>Bundesanstalt für Materialforschung und -prüfung (BAM)</thesisPublisher>
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    <publishedYear>2024</publishedYear>
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    <language>eng</language>
    <pageFirst>1</pageFirst>
    <pageLast>23</pageLast>
    <pageNumber/>
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    <issue>1</issue>
    <volume>2024</volume>
    <type>article</type>
    <publisherName>Wiley</publisherName>
    <publisherPlace/>
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    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
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    <title language="eng">A Bayesian Probabilistic Framework for Building Models for Structural Health Monitoring of Structures Subject to Environmental Variability</title>
    <abstract language="eng">Managing aging engineering structures requires damage identification, capacity reassessment, and prediction of remaining service life. Data from structural health monitoring (SHM) systems can be utilized to detect and characterize potential damage. However, environmental and operational variations impair the identification of damages from SHM data. Motivated by this, we introduce a Bayesian probabilistic framework for building models and identifying damage in monitored structures subject to environmental variability. The novelty of our work lies (a) in explicitly considering the effect of environmental influences and potential structural damages in the modeling to enable more accurate damage identification and (b) in proposing a methodological workflow for model‐based structural health monitoring that leverages model class selection for model building and damage identification. The framework is applied to a progressively damaged reinforced concrete beam subject to temperature variations in a climate chamber. Based on deflections and inclinations measured during diagnostic load tests of the undamaged structure, the most appropriate modeling approach for describing the temperature‐dependent behavior of the undamaged beam is identified. In the damaged state, damage is characterized based on the identified model parameters. The location and extent of the identified damage are consistent with the cracks observed in the laboratory. A numerical study with synthetic data is used to validate the parameter identification. The known true parameters lie within the 90% highest density intervals of the posterior distributions of the model parameters, suggesting that this approach is reliable for parameter identification. Our results indicate that the proposed framework can answer the question of damage identification under environmental variations. These findings show a way forward in integrating SHM data into the management of infrastructures.</abstract>
    <parentTitle language="eng">Structural Control and Health Monitoring</parentTitle>
    <identifier type="doi">10.1155/2024/4204316</identifier>
    <identifier type="urn">urn:nbn:de:kobv:b43-605027</identifier>
    <identifier type="issn">1545-2255</identifier>
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Data from structural health monitoring (SHM) systems can be utilized to detect and characterize potential damage. However, environmental and operational variations impair the identification of damages from SHM data. Motivated by this, we introduce a Bayesian probabilistic framework for building models and identifying damage in monitored structures subject to environmental variability. The novelty of our work lies (a) in explicitly considering the effect of environmental influences and potential structural damages in the modeling to enable more accurate damage identification and (b) in proposing a methodological workflow for model\u2010based structural health monitoring that leverages model class selection for model building and damage identification. The framework is applied to a progressively damaged reinforced concrete beam subject to temperature variations in a climate chamber. Based on deflections and inclinations measured during diagnostic load tests of the undamaged structure, the most appropriate modeling approach for describing the temperature\u2010dependent behavior of the undamaged beam is identified. In the damaged state, damage is characterized based on the identified model parameters. The location and extent of the identified damage are consistent with the cracks observed in the laboratory. A numerical study with synthetic data is used to validate the parameter identification. The known true parameters lie within the 90% highest density intervals of the posterior distributions of the model parameters, suggesting that this approach is reliable for parameter identification. Our results indicate that the proposed framework can answer the question of damage identification under environmental variations. These findings show a way forward in integrating SHM data into the management of infrastructures.&lt;\/jats:p&gt;","DOI":"10.1155\/2024\/4204316","type":"journal-article","created":{"date-parts":[[2024,6,28]],"date-time":"2024-06-28T09:47:56Z","timestamp":1719568076000},"update-policy":"http:\/\/dx.doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["A Bayesian Probabilistic Framework for Building Models for Structural Health Monitoring of Structures Subject to Environmental Variability"],"prefix":"10.1155","volume":"2024","author":[{"ORCID":"http:\/\/orcid.org\/0000-0002-1538-177X","authenticated-orcid":false,"given":"Patrick","family":"Simon","sequence":"first","affiliation":[]},{"ORCID":"http:\/\/orcid.org\/0000-0002-6319-9657","authenticated-orcid":false,"given":"Ronald","family":"Schneider","sequence":"additional","affiliation":[]},{"ORCID":"http:\/\/orcid.org\/0000-0002-5182-7310","authenticated-orcid":false,"given":"Matthias","family":"Bae\u00dfler","sequence":"additional","affiliation":[]},{"given":"Guido","family":"Morgenthal","sequence":"additional","affiliation":[]}],"member":"311","published-online":{"date-parts":[[2024,6,28]]},"reference":[{"key":"e_1_2_11_1_2","doi-asserted-by":"publisher","DOI":"10.1080\/15732479.2021.1914115"},{"key":"e_1_2_11_2_2","unstructured":"Highways England Assessment of highway bridges and structures 2022 https:\/\/www.standardsforhighways.co.uk\/dmrb\/."},{"key":"e_1_2_11_3_2","unstructured":"Bundesministerium f\u00fcr Verkehr Bau und Stadtentwicklung Richtlinie zur Nachrechnung von Stra\u00dfenbr\u00fccken im Bestand (Nachrechnungsrichtlinie) Bundesministerium f\u00fcr Verkehr 2011 Bau und Stadtentwicklung Berlin Germany."},{"key":"e_1_2_11_4_2","doi-asserted-by":"crossref","unstructured":"Bae\u00dflerM.andHilleF. 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SchneiderR. Bae\u00dflerM. andRecknagelC. Enhancing structural models with material tests and static response data- a case study considering a steel beam with asphalt layer subject to temperature variations Proceedings of the International Conference on Structural Health Monitoring of Intelligent Infrastructure (SHMII-10) July 2021 Porto Portugal."},{"key":"e_1_2_11_21_2","doi-asserted-by":"publisher","DOI":"10.1007\/s10518-008-9067-4"},{"key":"e_1_2_11_22_2","doi-asserted-by":"publisher","DOI":"10.1061\/(asce)0733-9399(2004)130:2(192)"},{"key":"e_1_2_11_23_2","doi-asserted-by":"publisher","DOI":"10.1098\/rspa.2007.1834"},{"key":"e_1_2_11_24_2","doi-asserted-by":"publisher","DOI":"10.1002\/stc.2137"},{"key":"e_1_2_11_25_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.oceaneng.2023.115407"},{"key":"e_1_2_11_26_2","doi-asserted-by":"crossref","unstructured":"SimonP. SchneiderR. ViefhuesE. SaidS. HerrmannR. andBae\u00dflerM. 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    <author>Patrick Simon</author>
    <author>Ronald Schneider</author>
    <author>Matthias Baeßler</author>
    <author>Guido Morgenthal</author>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Verkehrsinfrastukturen</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>SHM</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Model Updating</value>
    </subject>
    <subject>
      <language>eng</language>
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      <value>Environmental and Operational Variability</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Damage Identification</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Model Building</value>
    </subject>
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    <title language="eng">Ballasted track on vibrating bridge decks: physical mechanisms, empirical findings, and a proposal for assessment</title>
    <abstract language="eng">This paper summarizes the key findings and physical mechanisms and provides information on open questions and the assessment of railway bridge superstructure vibrations. Bridges are classic disruption points on a railway track. If bridge superstructures are dynamically excited by train traffic, the vertical accelerations of the track must be considered. For a ballasted track, this can lead to the destabilization of the ballast track, as the bridge superstructure acts like a vibrating table. In this respect, the paper explains in more detail what is meant by destabilization, when this destabilization occurs and how various influencing parameters such as acceleration amplitude, the vibration sequence and frequency affect its occurrence. In the InBridge4EU project, gaps in knowledge such as the effect of single impulse loads are being investigated experimentally. A new test facility has been set up for this purpose, the initial results of which are presented here. An essential element in the assessment of this scenario is the stability of the track under high compression forces with simultaneous dynamic excitation of the superstructure. A new approach for the assessment of bridge vibrations with respect to lateral stability is presented.</abstract>
    <parentTitle language="eng">International Journal of Structural Stability and Dynamics</parentTitle>
    <identifier type="issn">0219-4554</identifier>
    <identifier type="issn">1793-6764</identifier>
    <identifier type="doi">10.1142/S0219455425400243</identifier>
    <identifier type="urn">urn:nbn:de:kobv:b43-630972</identifier>
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    <enrichment key="date_peer_review">15.05.2025</enrichment>
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    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>Matthias Baeßler</author>
    <author>Patrick Simon</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Railway bridge dynamics</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Bridge deck acceleration</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Ballast destabilization</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Lateral track stability</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Track buckling</value>
    </subject>
    <collection role="ddc" number="624">Ingenieurbau</collection>
    <collection role="institutes" number="">7 Bauwerkssicherheit</collection>
    <collection role="institutes" number="">7.2 Ingenieurbau</collection>
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    <file>https://opus4.kobv.de/opus4-bam/files/63097/Baessler und Simon - 2025 - Ballasted track on vibrating bridge decks physica.pdf</file>
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  <doc>
    <id>39571</id>
    <completedYear/>
    <publishedYear>2017</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>148</pageFirst>
    <pageLast>156</pageLast>
    <pageNumber/>
    <edition/>
    <issue>175</issue>
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    <type>article</type>
    <publisherName>Elsevier</publisherName>
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    <belongsToBibliography>1</belongsToBibliography>
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    <title language="eng">Influence of structural stiffness on ratcheting convection cells of granular soil under cyclic lateral loading</title>
    <abstract language="eng">In granular soils, long-term cyclically loaded structures can lead to an accumulation of irreversible strain by forming closed convective cells in the upper layer of the bedding. The size of the convective cell, its formation and grain migration inside this closed volume have been studied with reference to different stiffness of the embedded structure and different maximum force amplitudes applied at the head of the structure.&#13;
This relation was experimentally investigated by applying a cyclic lateral force to a scaled flexible vertical element embedded in a dry granular soil. The model was monitored with a camera in order to derive the displacement field by means of the PIV technique. Furthermore, the ratcheting convective cell was also simulated with DEM with the aim of extracting some micromechanical information. The main results regarded the different development, shape and size of the convection cell and the surface settlements.</abstract>
    <parentTitle language="eng">Procedia Engineering</parentTitle>
    <identifier type="doi">10.1016/j.proeng.2017.01.046</identifier>
    <identifier type="urn">urn:nbn:de:kobv:b43-395711</identifier>
    <identifier type="issn">1877-7058</identifier>
    <enrichment key="eventName">1st International Conference on the Material Point Method, MPM 2017</enrichment>
    <enrichment key="eventStart">10.01.2017</enrichment>
    <enrichment key="eventEnd">13.01.2017</enrichment>
    <enrichment key="eventPlace">Deltares, Delft, The Netherlands</enrichment>
    <enrichment key="date_peer_review">18.05.2017</enrichment>
    <licence>Creative Commons - Namensnennung - Nicht kommerziell - Keine Bearbeitung 3.0</licence>
    <author>G. Zorzi</author>
    <author>Matthias Baeßler</author>
    <author>Fabio Gabrieli</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Particle image velocimetry</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Cyclic loading</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Discrete element method</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Ratcheting convective cell</value>
    </subject>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
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    <thesisPublisher>Bundesanstalt für Materialforschung und -prüfung (BAM)</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-bam/files/39571/1-s2.0-S1877705817300462-main.pdf</file>
  </doc>
  <doc>
    <id>30898</id>
    <completedYear/>
    <publishedYear>2014</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst>26</pageFirst>
    <pageLast>32</pageLast>
    <pageNumber/>
    <edition/>
    <issue>Suppl. 1 (Erneuerbare Energien)</issue>
    <volume>83</volume>
    <type>article</type>
    <publisherName>Ernst</publisherName>
    <publisherPlace>Berlin</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
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    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">Großmaßstäblicher Versuchsstand für zyklisch axial belastete Pfähle</title>
    <abstract language="deu">Offshore-Pfähle in Mehrpfahlgründungsstrukturen wie Jacket-Gründungen müssen nach der Rammung überwiegend zyklisch axialen Belastungen widerstehen. Die Abmessungen der Pfähle werden sowohl von der inneren Tragfähigkeit und dem Ermüdungsverhalten des Stahlquerschnittes als auch von der äußeren Tragfähigkeit und der Pfahl-Boden-Interaktion bestimmt. Aufgrund der großen Zahl von Pfahlgründungen, die für aktuelle und zukünftige Windparkprojekte benötigt werden, besteht ein dringender Bedarf, die Dimensionierung und die damit verbundenen Kosten des Einzelpfahles zu optimieren. Bezüglich der Pfahltragfähigkeit sind wichtige aktuelle Forschungsthemen eine mögliche Traglaststeigerung durch Anwachsen und die geeignete Abschätzung der zyklischen Degradation. Zur Untersuchung beider Effekte wurde eine großmaßstäbliche Versuchsanlage auf dem Testgelände BAM TTS in Horstwalde nahe Berlin errichtet. Auf diesem Versuchsfeld können große Stahlrohrammpfähle zyklisch druck- und zugbelastet werden. Zudem kann die Untersuchung von Alterungseffekten durch zeitlichen Versatz zwischen den Messkampagnen untersucht werden. Erste Ergebnisse zeigen einen Anstieg der Pfahltragfähigkeit bis zu ca. 60 % nach einer Standzeit von ca. 18 Monaten. Für die Degradation der Tragfähigkeit der zyklisch belasteten Pfähle zeigen die ersten vorläufigen Ergebnisse ein zum Teil unerwartetes Verhalten. Zusätzliche Untersuchungen werden derzeit zur weiteren Abklärung durchgeführt.</abstract>
    <parentTitle language="deu">Stahlbau</parentTitle>
    <identifier type="old">33882</identifier>
    <identifier type="doi">10.1002/stab.201430005</identifier>
    <identifier type="issn">0038-9145</identifier>
    <identifier type="issn">1437-1049</identifier>
    <identifier type="issn">0932-6375</identifier>
    <enrichment key="date_peer_review">26.06.2014</enrichment>
    <author>Matthias Baeßler</author>
    <author>Werner Rücker</author>
    <author>Pablo Cuéllar</author>
    <author>Steven Georgi</author>
    <author>Krassimire Karabeliov</author>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Stahlpfahl, gerammt</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Offshore-Gründung</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Anwachsen</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Feldversuch</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Tragfähigkeit</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Rammung</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Offshore foundation</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Increase</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Field test</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Bearing capacitiy</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Driving Versuche - Experimental set-ups</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Berechnungs- und Bemessungsverfahren - Analysis and calculation</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Stahlhochbau - Steel buildings</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Mast- und Turmbau - Masts and towers</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Stahlwasserbau - Steel structures for hydraulic engineering</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Steel pile, driven in</value>
    </subject>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
  </doc>
  <doc>
    <id>27492</id>
    <completedYear/>
    <publishedYear>2013</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>459</pageFirst>
    <pageLast>464</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>I</volume>
    <type>conferenceobject</type>
    <publisherName>CRC Press</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Geotechnical and geophysical characterization of a pile test site in post-glacial soil</title>
    <abstract language="eng">Two research institutes are currently evaluating dynamic pile load testing methods on bored piles in a sandy environment. A test site has been prepared, which ensures comparable conditions at all pile locations and provides detailed knowledge on soil and other boundary conditions. A detailed site investigation program was performed at a dedicated area on the BAM test site south of Berlin, Germany. Undisturbed soil samples have been collected from boreholes. In addition several CPTs and geophysical surveys have been performed. The site consists mainly of well graded, partly well compacted medium sands. But at depth an inhomogeneous gravel layer was detected in some parts of the site. This has led to a redesign of the test piles. They are now shorter than originally intended to avoid gravel layers at depth and to ensure that the drop weight available for dynamic test is capable to mobilize the required load.</abstract>
    <parentTitle language="eng">ISC-4 - 4th International conference on site characterization - Geotechnical and geophysical site characterization 4 (Proceedings)</parentTitle>
    <identifier type="old">30309</identifier>
    <identifier type="isbn">978-0-415-62136-6</identifier>
    <enrichment key="eventName">ISC-4 - 4th International conference on site characterization - Geotechnical and geophysical site characterization 4</enrichment>
    <enrichment key="eventPlace">Pernambuco, Brazil</enrichment>
    <enrichment key="eventStart">17.09.2012</enrichment>
    <enrichment key="eventEnd">21.09.2012</enrichment>
    <enrichment key="date_peer_review">20.12.2012</enrichment>
    <author>Ernst Niederleithinger</author>
    <author>Matthias Baeßler</author>
    <author>M. Herten</author>
    <author>M. Rumpf</author>
    <author>J. Tronicke</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Dynamic pile testing</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Test site</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>CPT</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Seismic tomography</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Seismic crosshole</value>
    </subject>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
  </doc>
  <doc>
    <id>58725</id>
    <completedYear/>
    <publishedYear>2023</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst/>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue>2</issue>
    <volume>288</volume>
    <type>article</type>
    <publisherName>Elsevier Ltd.</publisherName>
    <publisherPlace>Amsterdam</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Optimal vibration sensor placement for jacket support structures of offshore wind turbines based on value of information analysis</title>
    <abstract language="eng">Information on the condition and reliability of an offshore jacket structure provided by a vibration-based structural health monitoring system can guide decisions on inspection and maintenance. When selecting the sensor setup, the designer of the monitoring system must assess its overall benefit compared to its costs before installation. The potential benefit of continuously monitoring the dynamic response of a jacket structure can be formally quantified through a value of information analysis from Bayesian decision theory. In this contribution, we present a framework for optimizing the placement of vibration sensors on offshore jacket structures by maximizing the value of information of the monitoring system. To solve the resulting discrete optimization problem, we adapt a genetic algorithm. The framework is demonstrated in a numerical example considering a redundant jacket-type steel frame. The numerical study shows that monitoring the vibration response of the frame is beneficial. Good sensor setups consist of relatively few sensors located towards the upper part of the&#13;
frame. The adapted genetic algorithm performs similarly well as established sequential sensor placement algorithms and holds substantial promise for application to real jacket structures.</abstract>
    <parentTitle language="eng">Ocean Engineering</parentTitle>
    <identifier type="doi">10.1016/j.oceaneng.2023.115407</identifier>
    <identifier type="issn">0029-8018</identifier>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="date_peer_review">18.12.2023</enrichment>
    <enrichment key="PaperofMonth">1</enrichment>
    <author>Lukas Eichner</author>
    <author>Ronald Schneider</author>
    <author>Matthias Baeßler</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Optimal sensor placement</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Value of information</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Jacket support structure</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Offshore wind turbine</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Monitoring-informed inspection and maintenance planning</value>
    </subject>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="institutes" number="">7 Bauwerkssicherheit</collection>
    <collection role="institutes" number="">7.2 Ingenieurbau</collection>
    <collection role="themenfelder" number="">Energie</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
  </doc>
  <doc>
    <id>42387</id>
    <completedYear/>
    <publishedYear>2017</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>UNSP V03BT02A037, 1</pageFirst>
    <pageLast>10</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>3B</volume>
    <type>conferenceobject</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation>American Society of Mechanical Engineers (ASME)</creatingCorporation>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Critical factors affecting the capacity of cylindrical grouted connections in offshore energy structures</title>
    <abstract language="eng">Current trend suggests that global energy consumption will increase in the future. This growing energy demand and advancement of technology lead to explore all potential offshore fossil and non-fossil energy sources, necessitating erection of exploration and production structures, rigs, platforms and towers, which are susceptible to adverse environmental conditions along with their maintenances. Cylindrical grouted joints provide suitable connections between steel substructure and foundation in these offshore platforms and wind structures especially monopiles for ease of installation. However, these are composite connections with exterior sleeve, interior pile and infill grout. The capacity of these connections is affected by number of factors. The literature over last four decades by numerous researchers has shown the development of these connections with increasingly higher capacities and influences on these capacities due to various factors. This paper provides a comprehensive review on the factors affecting the connection capacity along with technical challenges for the future. Critical aspects and shortcomings of the current connection systems and potential solutions may be sought after for these issues are also discussed.</abstract>
    <parentTitle language="eng">Structures, Safety and Reliability - Proceedings of the ASME</parentTitle>
    <identifier type="isbn">978-0-7918-5766-3</identifier>
    <identifier type="doi">10.1115/OMAE2017-62510</identifier>
    <enrichment key="eventName">36th International Conference on Ocean, Offshore and Arctic Engineering</enrichment>
    <enrichment key="eventPlace">Trondheim, Norway</enrichment>
    <enrichment key="eventStart">25.06.2017</enrichment>
    <enrichment key="eventEnd">30.06.2017</enrichment>
    <enrichment key="date_peer_review">02.01.2018</enrichment>
    <author>Md Shamsuddoha</author>
    <author>Götz Hüsken</author>
    <author>Matthias Baeßler</author>
    <author>Hans-Carsten Kühne</author>
    <author>Marc Thiele</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Offshore wind energy</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Grouted connection</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Joint capacity</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Shear keys</value>
    </subject>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Graue Literatur</collection>
  </doc>
  <doc>
    <id>42960</id>
    <completedYear/>
    <publishedYear>2017</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>490</pageFirst>
    <pageLast>501</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject</type>
    <publisherName>CIMNE</publisherName>
    <publisherPlace>Barcelona,Spain</publisherPlace>
    <creatingCorporation>International Center for Numerical Methods in Engineering (CIMNE)</creatingCorporation>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">A contact problem aplication for the local behaviour of soil pile interaction</title>
    <abstract language="eng">The purpose of the work presented in this paper is to analyze locally (at the element level) the contact behavior of a soil-pile contact problem. Therefore, a 2D shear test is modeled using the Finite Element Method. The formulation of a 4 nodded zero-thickness interface element of Beer is chosen with a linear interpolation function. Four constitutive contact models adapted for contact problems have been implemented. The Mohr-Coulomb and Clough and Duncan models were chosen initially, due to the ease of implementation and few number of parameters needed. After, more complicated models in the framework of elasto-plasticity such as: Lashkari and Mortara were implemented for the first time into the finite element code of the shear test problem. They include other phenomena such as: relative density of soil, the stress level and sand dilatancy. From the results the relation between shear displacement and shear stress has been deduced. Finally, a discussion of the advantages and the drawbacks during computation of each model is given at the end.</abstract>
    <parentTitle language="eng">XIV International Conference on Computational Plasticity, Fundamentals and Applications (COMPLAS 2017)</parentTitle>
    <identifier type="isbn">978-84-946909-6-9</identifier>
    <enrichment key="eventName">Conference</enrichment>
    <enrichment key="eventPlace">Barcelona, Spain</enrichment>
    <enrichment key="eventStart">05.09.2017</enrichment>
    <enrichment key="eventEnd">07.09.2017</enrichment>
    <enrichment key="date_peer_review">02.01.2018</enrichment>
    <author>Borana Kullolli</author>
    <author>H. Stutz</author>
    <author>Jeffrey Bronsert</author>
    <author>Paola Dutto</author>
    <author>Matthias Baeßler</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Soil-pile interaction</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Numerical modelling</value>
    </subject>
    <collection role="ddc" number="620">Ingenieurwissenschaften und zugeordnete Tätigkeiten</collection>
    <collection role="ddc" number="624">Ingenieurbau</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Graue Literatur</collection>
  </doc>
  <doc>
    <id>46059</id>
    <completedYear/>
    <publishedYear>2018</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1557</pageFirst>
    <pageLast>1564</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject</type>
    <publisherName>CRC Press</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">A study on diverse strategies for discriminating environmental from damage based variations in monitoring data</title>
    <abstract language="eng">Right from the beginning of applying SHM to bridge structures it was obvious that environmental based perturbations on the measurement significantly influence the ability to identify structural damage.&#13;
Strategies are needed to classify such effects and consider them appropriately in SHM. Various methods have been developed and analyzed to separate environmental based effects from damage induced changes in the measures. Generally, two main approaches have emerged from research activity in this fields: (a) statistics based tools analyzing patterns in the data or in computed parameters and (b) methods, utilizing the structural model of the bridge taking into account environmental as well as damage based changes of stiffness values.&#13;
With the back-ground of increasing affordability of sensing and computing technology, effort should be made to increase sensitivity, reliability and robustness of procedures, separating environmental from damage caused changes in SHM measures. The contribution describes both general strategies and points out their Advantages and drawbacks. As basis, a review on relevant methods was conducted. The aim of the study is to classify approaches for separating damage describing information from environmental based perturbations in dependency of the SHM objective. And such, it is intended to describe a best practice in designing concepts for Monitoring infrastructure, naturally effected by environmental influences.</abstract>
    <parentTitle language="eng">Maintenance, Safety, Risk, Management and Life-Cycle Performance of Bridges</parentTitle>
    <identifier type="isbn">978-1-138-73045-8</identifier>
    <enrichment key="eventName">IABMAS</enrichment>
    <enrichment key="eventPlace">Melbourne, Australia</enrichment>
    <enrichment key="eventStart">09.07.2018</enrichment>
    <enrichment key="eventEnd">13.07.2018</enrichment>
    <enrichment key="date_peer_review">05.12.2019</enrichment>
    <author>Matthias Baeßler</author>
    <author>Falk Hille</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>SHM</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Environmental changes</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>temperature</value>
    </subject>
    <collection role="ddc" number="624">Ingenieurbau</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Graue Literatur</collection>
  </doc>
  <doc>
    <id>52059</id>
    <completedYear/>
    <publishedYear>2021</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>102934</pageFirst>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>77</volume>
    <type>article</type>
    <publisherName>Elsevier Ltd.</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Potential of a Repair System for Grouted Connections in Offshore Structures: Development and Experimental Verification</title>
    <abstract language="eng">Grouted connections are intensively used in offshore rigs, platforms as well as jacket and monopile offshore wind turbine structures. Being located in remote offshore conditions, these connections can experience considerable adverse loading during their lifetimes. Degradation was reported inside similar connections, which were installed in the last three decades. Grouting in the offshore sites may often be proven difficult, which eventually leads to reduced load-bearing capacity of connections in the long run. Thus, repair and rehabilitation of such connections should be planned ahead to minimize operational delays and costs. In this study, scaled grouted connections were manufactured using a novel mould, whose integrity were monitored using digital image correlation (DIC). The connections were loaded under static load to visualize the main failure pattern using distributed fibre optic sensors and acoustic emission (AE) analysis. Grouted connections were then repaired using a cementitious injectable grout. The effectiveness of the grout injection was monitored using dye penetration technique. Finally, specimens are reloaded to identify the potential of such repair for grouted connections.</abstract>
    <parentTitle language="eng">Marine Structures</parentTitle>
    <identifier type="doi">10.1016/j.marstruc.2021.102934</identifier>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="date_peer_review">17.05.2021</enrichment>
    <author>Götz Hüsken</author>
    <author>Md Shamsuddoha</author>
    <author>Stephan Pirskawetz</author>
    <author>Detlef Hofmann</author>
    <author>Matthias Baeßler</author>
    <author>Hans-Carsten Kühne</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Offshore</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Grouted connection</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Fibre optic sensors</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Acoustic emission analysis</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Cracks</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Repair</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Rehabilitation</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Static loading</value>
    </subject>
    <collection role="ddc" number="624">Ingenieurbau</collection>
    <collection role="institutes" number="">7 Bauwerkssicherheit</collection>
    <collection role="institutes" number="">7.2 Ingenieurbau</collection>
    <collection role="institutes" number="">7.4 Baustofftechnologie</collection>
    <collection role="institutes" number="">8 Zerstörungsfreie Prüfung</collection>
    <collection role="institutes" number="">8.6 Faseroptische Sensorik</collection>
    <collection role="themenfelder" number="">Infrastruktur</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
  </doc>
  <doc>
    <id>52809</id>
    <completedYear/>
    <publishedYear>2021</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>934</pageFirst>
    <pageLast>941</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject</type>
    <publisherName>CRC Press</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Bayesian system identification of a reinforced concrete beam subject to temperature variations based on static response data</title>
    <abstract language="eng">Changes in the measured response of structural systems can be an indication of structural damages. However, such changes can also be caused by the effect of varying environmental conditions. To detect, localize and quantify changes or damages in structural systems subject to varying environmental conditions, physics-based models of the structural systems have to be applied which explicitly account for the influence of ambient conditions on the structural behavior. Data obtained from the structural systems should be used to calibrate the models and update predictions. Bayesian system identification is an effective framework for this task. In this paper, we apply this framework to learn the parameters of two competing structural models of a reinforced concrete beam subject to varying temperatures based on static response data. The models describe the behavior of the beam in the uncracked and cracked condition. The data is collected in a series of load tests in a climate chamber. Bayesian model class selection is then applied to infer the most plausible condition of the beam conditional on the available data.</abstract>
    <parentTitle language="eng">Bridge Maintenance, Safety, Management, Life-Cycle Sustainability and Innovations</parentTitle>
    <identifier type="doi">10.1201/9780429279119-125</identifier>
    <enrichment key="eventName">Tenth International Conference on Bridge Maintenance, Safety and Management (IABMAS 2020)</enrichment>
    <enrichment key="eventPlace">Online meeting</enrichment>
    <enrichment key="eventStart">11.04.2021</enrichment>
    <enrichment key="eventEnd">15.04.2021</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="date_peer_review">10.10.2022</enrichment>
    <author>Patrick Simon</author>
    <author>Ronald Schneider</author>
    <author>Matthias Baeßler</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Structural systems</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Bayesian system identification</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Damage identification</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Environmental effects</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Structural health monitoring</value>
    </subject>
    <collection role="ddc" number="624">Ingenieurbau</collection>
    <collection role="institutes" number="">7 Bauwerkssicherheit</collection>
    <collection role="institutes" number="">7.2 Ingenieurbau</collection>
    <collection role="themenfelder" number="">Infrastruktur</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
  </doc>
  <doc>
    <id>28854</id>
    <completedYear/>
    <publishedYear>2013</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>700</pageFirst>
    <pageLast>703</pageLast>
    <pageNumber/>
    <edition/>
    <issue>Paper 8794 - 181</issue>
    <volume>8794</volume>
    <type>conferenceobject</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation>International society for optics and photonics (SPIE)</creatingCorporation>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Static and dynamic pile testing of reinforced concrete piles with structure integrated fibre optic strain sensors</title>
    <abstract language="eng">Static and dynamic pile tests are carried out to determine the load bearing capacity and the quality of reinforced concrete piles. As part of a round robin test to evaluate dynamic load tests, structure integrated fibre optic strain sensors were used to receive more detailed information about the strains along the pile length compared to conventional measurements at the pile head. This paper shows the instrumentation of the pile with extrinsic Fabry-Perot interferometers sensors and fibre Bragg gratings sensors together with the results of the conducted static load test as well as the dynamic load Tests and pile integrity tests.</abstract>
    <parentTitle language="eng">EWOFS 2013 - 5th European workshop on optical fibre sensors (Proceedings)</parentTitle>
    <identifier type="old">31740</identifier>
    <identifier type="isbn">978-0-81949-634-8</identifier>
    <identifier type="doi">10.1117/12.2026813</identifier>
    <identifier type="issn">0277-786X</identifier>
    <note>Serientitel: Proceedings of SPIE – Series title: Proceedings of SPIE</note>
    <enrichment key="eventName">EWOFS 2013 - 5th European workshop on optical fibre sensors</enrichment>
    <enrichment key="eventPlace">Kraków, Poland</enrichment>
    <enrichment key="eventStart">19.05.2013</enrichment>
    <enrichment key="eventEnd">22.05.2013</enrichment>
    <enrichment key="date_peer_review">01.08.2013</enrichment>
    <author>Constanze Schilder</author>
    <author>Harald Kohlhoff</author>
    <author>Detlef Hofmann</author>
    <author>Frank Basedau</author>
    <author>Wolfgang Habel</author>
    <author>Matthias Baeßler</author>
    <author>Ernst Niederleithinger</author>
    <author>Steven Georgi</author>
    <author>M. Herten</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Static load test</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Dynamic load test</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Pile integrity test</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Extrinsic Fabry-Perot interferometer</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Fibre Bragg grating</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Structure integrated sensor</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Fibre optic strain sensor</value>
    </subject>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
  </doc>
  <doc>
    <id>36688</id>
    <completedYear/>
    <publishedYear>2016</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>Article UNSP V001T10A004, 1</pageFirst>
    <pageLast>8</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>1</volume>
    <type>conferenceobject</type>
    <publisherName>ASME</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Suction bucket foundations for wind energy turbines: a numerical study with FEM</title>
    <abstract language="eng">Suction Bucket Jackets (SBJ) are found as a suitable alternative to driven piles for the support of jacket or tripod foundations for offshore wind energy converters. Offshore wind energy turbines are characterized by a small self weight and they can be subjected to different load combinations. The work presented here aims to show the numerical investigation on the behavior of suction bucket foundations under different kind of loads as well as load combinations. In order to do so, a suitable numerical model is much needed. The theoretical basis of the model lies on the Swansea formulation of Biots equations of dynamic poroelasticity combined with a constitutive model that reproduces key aspects of cyclic soil behavior in the frame of the theory of generalized plasticity. An adequate FE formulation, the representation of appropriate soil-structure interfaces and the computational efficiency are key aspects in order to successfully model such complex systems. The 3D numerical simulation allows a special insight into the fundamental behavior of the founding of Suction Bucket Jackets such as the evolution of the pore water pressure or the occurrence of the so called soil liquefaction.</abstract>
    <parentTitle language="eng">Conference on ocean, offshore and arctic engineering</parentTitle>
    <identifier type="isbn">978-0-7918-4992-7</identifier>
    <enrichment key="eventName">OMAE 2016 - 35th ASME International Conference on Ocean, Offshore and Arctic Engineering</enrichment>
    <enrichment key="eventPlace">Busan, South Korea</enrichment>
    <enrichment key="eventStart">20.06.2016</enrichment>
    <enrichment key="eventEnd">24.06.2016</enrichment>
    <enrichment key="date_peer_review">02.03.2017</enrichment>
    <author>Paola Dutto</author>
    <author>Matthias Baeßler</author>
    <author>Peter Geißler</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Suction bucket jacket</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Finite Element</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Offshore geotechnics</value>
    </subject>
    <collection role="ddc" number="624">Ingenieurbau</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Graue Literatur</collection>
  </doc>
  <doc>
    <id>25405</id>
    <completedYear/>
    <publishedYear>2012</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst>11</pageFirst>
    <pageLast>25</pageLast>
    <pageNumber/>
    <edition/>
    <issue>1</issue>
    <volume>14</volume>
    <type>article</type>
    <publisherName>Springer</publisherName>
    <publisherPlace>Berlin ; Heidelberg</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">On the quasi-static granular convective flow and sand densification around pile foundations under cyclic lateral loading</title>
    <abstract language="deu">The saturated sand surrounding an offshore pile
foundation under quasi-static cyclic lateral load can show the
physical phenomena of macromechanical densification and
convective granular flow. Based on the results from physical
model tests at different geometrical scales, this paper
provides a certain quantification of such phenomena and discusses
their causes and consequences. The progressive sand
densification leads to subsidence of the soil surface and a significant
stiffening of the pile behaviour. Conversely, the ratcheting
convective motion of two closed cells of soil beneath
the pile-head is responsible for an endless grain migration at
the soil surface, the inverse grading of the convected material
and a direct shear of the sand at the distinct boundary of the
revolving soil domain. In this respect, and from a macromechanical
perspective considering the soil as a continuum, it
appears that the convecting material tends to follow gradient
lines of shear stress during its ratcheting motion. Concluding
the paper, the practical relevance of these phenomena and
their extrapolation to other conditions are briefly discussed.</abstract>
    <parentTitle language="deu">Granular matter</parentTitle>
    <identifier type="old">28119</identifier>
    <identifier type="doi">10.1007/s10035-011-0305-0</identifier>
    <identifier type="issn">1434-5021</identifier>
    <identifier type="issn">1434-7636</identifier>
    <enrichment key="bibliotheksstandort">Sonderstandort: Publica-Schrank</enrichment>
    <enrichment key="date_peer_review">30.01.2012</enrichment>
    <author>Pablo Cuéllar</author>
    <author>Steven Georgi</author>
    <author>Matthias Baeßler</author>
    <author>Werner Rücker</author>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Offshore pile foundation</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Cyclic loading</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Ratcheting</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Granular convection</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Densification</value>
    </subject>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access")</collection>
  </doc>
  <doc>
    <id>25886</id>
    <completedYear/>
    <publishedYear>2009</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst>267</pageFirst>
    <pageLast>275</pageLast>
    <pageNumber/>
    <edition/>
    <issue>4</issue>
    <volume>78</volume>
    <type>article</type>
    <publisherName>Ernst</publisherName>
    <publisherPlace>Berlin</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">Erste Erfahrungen bei der Realisierung der Tragstrukturen von Offshore-Windenergieanlagen in der deutschen ausschließlichen Wirtschaftszone</title>
    <abstract language="deu">Zukünftig soll durch die Installation von Windparks in der ausschließlichen Wirtschaftszone und deren Betrieb ein wesentlicher Anteil des Strombedarfs in Deutschland gedeckt werden. Für die zugehörige Realisierung der Windenergieanlagen hat die zuständige Behörde, das Bundesamt für Seeschifffahrt und Hydrographie, Standards veröffentlicht, über deren Inhalte im Hinblick auf die zu errichtenden Stahlkonstruktionen von Windenergieanlagen berichtet wird. Über die zu absolvierenden Freigabephasen und deren Bestandteile sowie über die Anforderungen, die die Genehmigungsbehörde an die Art und den Umfang der zu erbringenden Nachweise für die Tragstrukturen stellt, wird im Rahmen des Aufsatzes berichtet. Bei der zuständigen Genehmigungsbehörde durchlaufen derzeit die ersten Anträge das Genehmigungsverfahren. Über die hierbei gesammelten Erfahrungen wird aus Sicht der zuständigen Behörde und deren Fachgutachtern berichtet. Speziell hierbei auftretende Diskussionspunkte werden benannt und Hinweise gegeben.</abstract>
    <parentTitle language="deu">Stahlbau</parentTitle>
    <identifier type="old">28619</identifier>
    <identifier type="doi">10.1002/stab.200910039</identifier>
    <identifier type="issn">0038-9145</identifier>
    <identifier type="issn">1437-1049</identifier>
    <identifier type="issn">0932-6375</identifier>
    <enrichment key="bibliotheksstandort">Sonderstandort: Publica-Schrank</enrichment>
    <enrichment key="date_peer_review">21.05.2012</enrichment>
    <author>Matthias Baeßler</author>
    <author>C. Dahlke</author>
    <author>F. Eißfeldt</author>
    <author>Falk Lüddecke</author>
    <author>Werner Rücker</author>
    <author>U. Vierfuß</author>
    <author>M. Zeiler</author>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Offshore-Windenergieanlagen</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Genehmigungsverfahren</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Windenergieparks</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Standortbedingungen</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Gründung</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Mast- und Turmbau</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Sonderkonstruktionen</value>
    </subject>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access")</collection>
  </doc>
  <doc>
    <id>60765</id>
    <completedYear/>
    <publishedYear>2024</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst>558</pageFirst>
    <pageLast>567</pageLast>
    <pageNumber/>
    <edition/>
    <issue>10</issue>
    <volume>101</volume>
    <type>article</type>
    <publisherName>Ernst &amp; Sohn</publisherName>
    <publisherPlace>Berlin</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">Digitales Datenmanagement für die Instandhaltung von Offshore-Windparks</title>
    <title language="eng">Digital data management for maintenance in offshore wind farms</title>
    <abstract language="deu">Im Forschungsprojekt DiMoWind-Inspect wurde untersucht, welche Grundvoraussetzungen geschaffen werden müssen, um digitale Methoden für die Instandhaltung von Offshore-Windenergieanlagen einsetzen zu können. Daten aus allen Lebensphasen der Anlagen werden derzeit nur selten effizient dafür genutzt, um die sinnvollsten Instandhaltungsmaßnahmen am richtigen Ort, zum richtigen Zeitpunkt und mit den geringsten Kosten durchzuführen. Eine im Vorhaben entwickelte einheitliche Strukturierung der bisher häufig unstrukturierten Bau- und Instandhaltungsdaten ermöglicht ihre übergreifende, anwenderspezifische Verfügbarkeit. Hierfür werden Prinzipien des Referenzkennzeichnungssystems RDS-PP adaptiert. Es wird aufgezeigt, wie neben Bauteilen auch zusätzliche Informationen wie Instandhaltungsmaßnahmen oder Mängel strukturiert werden können. Dem Ansatz des Building Information Modeling folgend werden die Bauwerkskomponenten direkt mit den Informationen aus Inspektionen und weiteren Instandhaltungsmaßnahmen verknüpft. So können Informationen aus dem Betrieb über den Zustand der Struktur verarbeitet und für die maßgebenden Berechnungen und Nachweise zur Verfügung gestellt werden. Als Anwendungsfall wird ein zweistufiges Konzept vorgestellt, das zur Bewertung der Ermüdungslebensdauer eines korrosionsgeschädigten Konstruktionsdetails der Gründungsstruktur einer Offshore-Windenergieanlage mit Informationen aus der Instandhaltung eingesetzt wird.</abstract>
    <abstract language="eng">The DiMoWind-Inspect research project explored the essential requirements for implementing digital methods in the maintenance of offshore wind turbines. Currently, data from all stages of the turbines' lifecycles are underutilized, leading to suboptimal maintenance actions being taken in terms of location, timing, and cost. A consistent structuring of previously often unstructured construction and maintenance data developed in the project enables their cross-disciplinary, user-specific availability. To accomplish this, the principles of the Reference Designation System for Power Plants RDS-PP are applied. In this way, additional information, such as maintenance measures or defects, can be structured alongside components. The components of the structures are directly linked with information from inspections and other maintenance activities, following the Building Information Modeling approach. This allows for processing operational information about the condition of the structure and providing it for relevant calculations and assessments. As a use case, a two-stage concept is presented, utilizing maintenance information to assess the fatigue life of a corrosion-damaged structural detail in the support structure of an offshore wind turbine.</abstract>
    <parentTitle language="deu">Bautechnik</parentTitle>
    <identifier type="doi">10.1002/bate.202400026</identifier>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="date_peer_review">23.05.2025</enrichment>
    <author>Lukas Eichner</author>
    <author>Paul Gerards-Wünsche</author>
    <author>Karina Happel</author>
    <author>Sigurd Weise</author>
    <author>Gerrit Haake</author>
    <author>Lars Sieber</author>
    <author>Holger Flederer</author>
    <author>Ronald Schneider</author>
    <author>Ralf Herrmann</author>
    <author>Falk Hille</author>
    <author>Matthias Baeßler</author>
    <author>Holger Huhn</author>
    <author>Andreas Küchler</author>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Building Information Modeling</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Datenmanagement</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Instandhaltung</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Offshore-Windenergie</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Referenzkennzeichnungssystem</value>
    </subject>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="institutes" number="">7 Bauwerkssicherheit</collection>
    <collection role="institutes" number="">7.2 Ingenieurbau</collection>
    <collection role="themenfelder" number="">Energie</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="themenfelder" number="">Windenergie</collection>
  </doc>
  <doc>
    <id>57244</id>
    <completedYear/>
    <publishedYear>2023</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1</pageFirst>
    <pageLast>15</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">A framework for assessing the reliability of crack luminescence – an automated fatigue crack detection system</title>
    <abstract language="eng">The new crack luminescence method offers the possibility of making fatigue surface cracks in metallic materials more visible during inspections through a special coating system. This coating system consists of two layers, whereby the first layer has fluorescent properties and emits visible light as soon as it is irradiated by UV light. The top layer is black and is designed to prevent the fluorescent layer from emitting if no crack develops in the underlying material. The technique proved particularly useful in a wide variety of fatigue tests of steel components under laboratory conditions. Moreover, it has the potential to be used in various industrial applications. To enable industrial deployment and integration into maintenance strategies, a concept study is developed in this contribution, resulting in a qualification framework that can serve as a foundation for determining the reliability of the crack luminescence system in terms of a probability of detection curve. Within this study, factors causing measurement variability and uncertainty are being determined and their influences assessed. Due to the extension of the system by a moving computer vision system for automated crack detection using artificial intelligence, additional long-term effects associated with structural health monitoring systems need to be incorporated into an extended probability of detection study as part of the technical justification. Finally, important aspects and findings related to design of experiments are discussed, and a framework for reliability assessment of a new optical crack monitoring method is presented, emphasizing the influence of various uncertainty parameters, including long-term effects such as system ageing.</abstract>
    <parentTitle language="eng">SPIE Conference Smart Structures + Nondestructive Evaluation 2023</parentTitle>
    <identifier type="doi">10.1117/12.2658390</identifier>
    <identifier type="isbn">978-1-5106-6086-1</identifier>
    <enrichment key="eventName">SPIE Conference Smart Structures + Nondestructive Evaluation 2023</enrichment>
    <enrichment key="eventPlace">Long Beach, CA, USA</enrichment>
    <enrichment key="eventStart">24.03.2023</enrichment>
    <enrichment key="eventEnd">28.03.2023</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="date_peer_review">18.09.2023</enrichment>
    <author>Paul Gerards-Wünsche</author>
    <author>Mirjana Ratkovac</author>
    <author>Ronald Schneider</author>
    <author>Falk Hille</author>
    <author>Matthias Baeßler</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Structural Health Monitoring</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Non-Destructive Evaluation</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Probability of Detection</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Reliability</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Artificial Intelligence</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Computer Vision</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Crack Luminescence</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Wind</value>
    </subject>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="institutes" number="">7 Bauwerkssicherheit</collection>
    <collection role="institutes" number="">7.2 Ingenieurbau</collection>
    <collection role="themenfelder" number="">Energie</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Graue Literatur</collection>
  </doc>
  <doc>
    <id>63368</id>
    <completedYear/>
    <publishedYear>2025</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1</pageFirst>
    <pageLast>26</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>article</type>
    <publisherName>Sage</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Parallelized adaptive Bayesian updating with structural reliability methods for inference of large engineering models</title>
    <abstract language="eng">The reassessment of engineering structures, such as bridges, now increasingly involve the integration of models with realworld data. This integration aims to achieve accurate ‘as-is’ analysis within a digital twin framework. Bayesian model updating combines prior knowledge and data with models to enhance the modelling accuracy while consistently handling uncertainties. When updating large engineering models, numerical methods for Bayesian analysis present significant computational challenges due to the need for a substantial number of likelihood evaluations. The novelty of this contribution is to parallelize adaptive Bayesian Updating with Structural reliability methods combined with subset simulation (aBUS) to improve its computational efficiency. To demonstrate the efficiency and practical applicability of the proposed approach, we present a case study on the Maintalbrücke Gemünden, a large railway bridge. We leverage modal property data to update a linear-elastic dynamic structural model of the bridge. The parallelized aBUS approach significantly reduces computational time, making Bayesian updating of large engineering models feasible within reasonable timeframes. The improved efficiency allows for a wider implementation of Bayesian model updating in structural health monitoring and maintenance decision support systems.</abstract>
    <parentTitle language="eng">Advances in Structural Engineering</parentTitle>
    <identifier type="issn">1369-4332</identifier>
    <identifier type="issn">2048-4011</identifier>
    <identifier type="doi">10.1177/13694332251346848</identifier>
    <identifier type="urn">urn:nbn:de:kobv:b43-633686</identifier>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="date_peer_review">23.06.2025</enrichment>
    <licence>Creative Commons - CC BY-NC - Namensnennung - Nicht kommerziell 4.0 International</licence>
    <author>Patrick Simon</author>
    <author>Ronald Schneider</author>
    <author>Matthias Baeßler</author>
    <author>Guido Morgenthal</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Bayesian model updating</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Bayesian updating with structural reliability methods</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Structural health monitoring</value>
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      <language>eng</language>
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      <value>Parallelization</value>
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      <language>eng</language>
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      <value>Modal analysis</value>
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    <subject>
      <language>eng</language>
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      <value>Railway bridge</value>
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    <collection role="institutes" number="">7 Bauwerkssicherheit</collection>
    <collection role="institutes" number="">7.2 Ingenieurbau</collection>
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    <publishedYear>2024</publishedYear>
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    <volume>313</volume>
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    <title language="eng">Large-scale field tests on plastic pile tip failure upon monopile installation</title>
    <abstract language="eng">Large-diameter monopiles are the most common foundation structures for offshore wind turbines. One relevant failure mode during installation is plastic failure of the pile tip which may increase progressively during further driving (pile tip buckling; extrusion buckling). This paper presents the details and results of a large-scale field-test campaign with dynamic pile installation for the validation and calibration of different numerical approaches concerning pile-tip buckling phenomena. The phenomenology of observed pile-tip failures is here described in detail and a first quantitative approach is evaluated based on the field-test data. As the number of new projects continues to grow and the necessity to construct wind farms in challenging terrain increases, such field data-sets will become increasingly relevant.</abstract>
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    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>Hagen Balscheit</author>
    <author>Peter Geißler</author>
    <author>Pablo Cuéllar</author>
    <author>Frank Basedau</author>
    <author>Matthias Baeßler</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Monopile</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Offshore Windenergy</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Pfahlfußbeulen</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Pile Tip Buckling</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Reference Tests</value>
    </subject>
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    <thesisPublisher>Bundesanstalt für Materialforschung und -prüfung (BAM)</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-bam/files/61165/1-s2.0-S002980182402660X-main.pdf</file>
  </doc>
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    <completedYear/>
    <publishedYear>2015</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>609</pageFirst>
    <pageLast>620</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>101</volume>
    <type>article</type>
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    <title language="eng">System identification of inverse, multimodal and nonlinear problems using evolutionary computing - Application to a pile structure supported on nonlinear springs</title>
    <abstract language="eng">This paper deals with the system identification of a mechanical structure supported by nonlinear springs subjected to an external load. If all mechanical parameters of the system were known, the displacement of the system subjected to this load could be easily calculated. However, the monitoring applications often deal with the inverse problem. The loads and displacements of the system are known and certain mechanical Parameters of the system are sought. The solution of such inverse problems can be difficult, especially when they have a nonlinear and multimodal character, which often makes them appear intractable at first sight. However, evolutionary computing can be applied to solve this inverse, nonlinear and multimodal problem. Sometimes a prior knowledge exists on certain system properties, which is difficult to implement into analytical or numerical solvers. This knowledge can play a decisive role in identifying the System properties and it can be easily included as a boundary condition when applying evolutionary algorithms.&#13;
This article discusses how and under what conditions the unknown spring resistances can be identified. The practical application of this procedure is exemplified here with the mechanical system of a pile foundation.</abstract>
    <parentTitle language="eng">Engineering Structures</parentTitle>
    <identifier type="doi">10.1016/j.engstruct.2015.07.034</identifier>
    <identifier type="issn">0141-0296</identifier>
    <identifier type="issn">1873-7323</identifier>
    <enrichment key="date_peer_review">13.03.2017</enrichment>
    <author>Krassimire Karabeliov</author>
    <author>Pablo Cuéllar</author>
    <author>Matthias Baeßler</author>
    <author>Werner Rücker</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Evolutionary computing</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Inverse problem</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Multimodal solution</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>System identification</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Pile monitoring</value>
    </subject>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="ddc" number="624">Ingenieurbau</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
  </doc>
  <doc>
    <id>28873</id>
    <completedYear/>
    <publishedYear>2013</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1336</pageFirst>
    <pageLast>1345</pageLast>
    <pageNumber/>
    <edition/>
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    <publisherName/>
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    <creatingCorporation>American Society of Civil Engineers (ASCE)</creatingCorporation>
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    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Relevant factors for the liquefaction susceptibility of cyclically loaded offshore monopiles in sand</title>
    <abstract language="eng">The offshore foundations may exhibit a relatively high liquefaction susceptibility due to the full saturation of the porous seabed and the cyclic nature of the typical offshore loads. Here, the particular relevance of some of the main factors that affect the liquefaction susceptibility of an offshore monopile will be addressed, focusing on the possibility of a progressive accumulation of residual pore water pressure within the saturated soil around a monopile under cyclic lateral loading. The discussion is based on numerical results obtained with a coupled FE model of the offshore foundation which includes the Biot-Zienkiewicz u-p model. A constitutive model of the Generalized Plasticity type has been used for the soil in order to reproduce important features of its behaviour under cyclic loading. This paper presents the findings derived from a parametric study of the problem and shows that the accumulation of residual pore pressure can produce significant changes of the pile's behaviour under external loading. The paper also investigates the effects caused by the loading from a realistic storm of moderate magnitude and the consequential transient degradation of the foundation's stiffness.</abstract>
    <parentTitle language="eng">Poromechanics V - 5th Biot conference on poromechanics (Proceedings)</parentTitle>
    <identifier type="old">31760</identifier>
    <identifier type="isbn">978-0-7844-1299-2</identifier>
    <identifier type="doi">10.1061/9780784412992.160</identifier>
    <enrichment key="eventName">Poromechanics V - 5th Biot conference on poromechanics</enrichment>
    <enrichment key="eventPlace">Vienna, Austria</enrichment>
    <enrichment key="eventStart">10.07.2013</enrichment>
    <enrichment key="eventEnd">12.07.2013</enrichment>
    <enrichment key="zsBemerkung">Der Vorgänger steht in der aus WoS erzeugten Excel-Tabelle unter dem Eintrag "PORO MECHANICS IV" (also mit einem Leerzeichen). Es handelt sich aber definitiv um die gleiche Veranstaltungsreihe. Wenn man im WoS im Feld "PUBLICATION NAME" mit "PORO MECHANICS IV" sucht, dann kommen Treffer, bei denen im Feld "Conference" das folgende steht: "4th Biot Conference on Poromechanics".  Jan Harloff-Puhr 23.01.2014</enrichment>
    <enrichment key="date_peer_review">05.08.2013</enrichment>
    <author>Pablo Cuéllar</author>
    <author>Matthias Baeßler</author>
    <author>Werner Rücker</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Soil liquefaction</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Cyclic loads</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Piles</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Sand (hydraulic)</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Offshore structures</value>
    </subject>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
  </doc>
  <doc>
    <id>29591</id>
    <completedYear/>
    <publishedYear>2013</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1</pageFirst>
    <pageLast>10</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation>APMTAC</creatingCorporation>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Numerical modeling of train-track-interaction at bridge transition zones considering the long-term behaviour</title>
    <abstract language="eng">A train passage will induce elastic and plastic deformations in the ballast and ist underlying soll. Considering the short term behaviour the elastic deformations will overweight the plastic and therefore these can be neglected. Regarding the long term behaviour the plastic deformations will accumulate due to repeating traffic loads and lead to settlement and Deterioration ofthe track structure. A smooth settlement along the track (small differential Settlement) is acceptable, whereas large differential settlement accelerates the process of deterioration and reduces the safety and serviceability ofthe track.&#13;
Especially a bridge transition zone is prone to large differential settlements, where the track deteriorates in the backfilling area of bridge abutments mainly due to stiffness changes between embankment and bridge, repeating traffic loads and displacements of the superstructure Ends on bridges. A numerical model will be presented, with a particular focus on the long term behaviour of the track at bridge transition zones under repeating traffic loads. The ahn ofthe Simulation is not the computation of every train Crossing but the analysis of the long term behaviour of the bridge transition zone based on single train crossings. &#13;
The analysis is performed in the time domain, whereas the bridge, the track and the backfilling area are modelled by means of the finite</abstract>
    <parentTitle language="eng">ICOVP-2013 - 11th International conference on vibration problems (Proceedings)</parentTitle>
    <identifier type="old">32517</identifier>
    <identifier type="isbn">978-989-96264-4-7</identifier>
    <enrichment key="eventName">ICOVP-2013 - 11th International conference on vibration problems</enrichment>
    <enrichment key="eventPlace">Lisbon, Portugal</enrichment>
    <enrichment key="eventStart">09.09.2013</enrichment>
    <enrichment key="eventEnd">12.09.2013</enrichment>
    <enrichment key="date_peer_review">21.11.2013</enrichment>
    <author>Jeffrey Bronsert</author>
    <author>Matthias Baeßler</author>
    <author>Pablo Cuéllar</author>
    <author>Werner Rücker</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Train-track-interaction</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Transition zone</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Track settlement</value>
    </subject>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
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    <publishedYear>2014</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>75</pageFirst>
    <pageLast>86</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>59</volume>
    <type>article</type>
    <publisherName>Elsevier Ltd.</publisherName>
    <publisherPlace>Barking</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">A numerical model for the transient analysis of offshore foundations under cyclic loading</title>
    <abstract language="eng">A comprehensive numerical model for the analysis of offshore foundations under a general transient loading is presented here. The theoretical basis of the model lies on the Swansea formulation of Biot's equations of dynamic poroelasticity combined with a constitutive model that reproduces key aspects of cyclic soil behaviour in the frame of the theory of generalised plasticity. On the practical side, the adoption of appropriate finite element formulations may prevent the appearance of spurious numerical instabilities of the pore pressure field. In this respect, the use of a coupled enhanced-strain element is here proposed. On the other hand, the practicality of the presented model depends ultimately on its computational efficiency. Some practical recommendations concerning the solution strategies, the matrix storage/handling procedures and the parallel multi-processor computation are here provided. Finally, the performance of the model with a benchmark study case and its practical application to analyse the soil–structure interaction of an offshore monopile under a realistic transient storm loading are discussed.</abstract>
    <parentTitle language="eng">Computers and geotechnics</parentTitle>
    <identifier type="old">33464</identifier>
    <identifier type="doi">10.1016/j.compgeo.2014.02.005</identifier>
    <identifier type="issn">0266-352x</identifier>
    <enrichment key="date_peer_review">07.04.2014</enrichment>
    <author>Pablo Cuéllar</author>
    <author>P. Mira</author>
    <author>M. Pastor</author>
    <author>J.A.F. Merodo</author>
    <author>Matthias Baeßler</author>
    <author>Werner Rücker</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Offshore foundations</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Cyclic loading</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Numerical model</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Pore pressure accumulation</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Liquefaction analysis</value>
    </subject>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
  </doc>
  <doc>
    <id>31142</id>
    <completedYear/>
    <publishedYear>2014</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1</pageFirst>
    <pageLast>8</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject</type>
    <publisherName>CRC Press</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Evaluating the degradation of ballasted track at bridges for high-speed railways</title>
    <abstract language="eng">The bridge design for railway bridges is far more dependent on the interaction with the traffic and the carriageway than for road bridges. This is especially true for the specific demands of the track in highspeed railways. Both maintenance and safety of the track have to be considered. The most relevant sections for the design criteria can be located at the bridge transition zones. Based on experimental investigations it is shown that bridge joint displacements, changes in stiffness and uplifting of the sleeper are causes for an increased degradation and loss in strength of the ballasted track. With respect to high speed vibrations of the bridge deck can have an even more decisive impact. Bridge deck vibrations can lead to destabilization of the bailast. In a numerical study the behavior of the track at the bridge is illustrated.</abstract>
    <parentTitle language="eng">IABMAS 2014 - 7th International conference of bridge maintenance, safety and management (Proceedings)</parentTitle>
    <identifier type="old">34136</identifier>
    <identifier type="isbn">978-1-138-00103-9</identifier>
    <identifier type="isbn">978-1-315-76069-8</identifier>
    <enrichment key="eventName">IABMAS 2014 - 7th International conference of bridge maintenance, safety and management</enrichment>
    <enrichment key="eventPlace">Shanghai, China</enrichment>
    <enrichment key="eventStart">07.07.2014</enrichment>
    <enrichment key="eventEnd">11.07.2014</enrichment>
    <enrichment key="date_peer_review">11.08.2014</enrichment>
    <author>Matthias Baeßler</author>
    <author>Jeffrey Bronsert</author>
    <author>Pablo Cuéllar</author>
    <author>Werner Rücker</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Train-track-bridge-interaction</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Bridge transition zone</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Assessment criteria</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Vehicle model</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Numerical model</value>
    </subject>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
  </doc>
  <doc>
    <id>31144</id>
    <completedYear/>
    <publishedYear>2014</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>799</pageFirst>
    <pageLast>804</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Assessment and optimisation of bridge transition zones on the basis of a numerical model for train-track-bridge interaction</title>
    <abstract language="eng">The main degradation process at bridge transition zones due to traffic loads is the appearance of differential settlements. Abrupt stiffness changes, repeating traffic loads and relative displacements of the superstructure ends on bridges often aggravate this problem. In this contribution, a 3D finite element (FE) model extended with a boundary formulation in the frame of the scaled-boundary finite element method (SBFEM) for a transient analysis of train-track-bridge interaction is presented. This numerical model permits an assessment of bridge transition zone with respect to permanent deformations of the track. The main focus lies on the modeling strategies for the vehicle and their impact on suitable assessment criteria for bridge transition zones. For this purpose, two different modeling strategies for the vehicle, a moving load model and a multibody model, have been compared and discussed on the basis of the assessment criteria. The results indicate that the model of the vehicle has a minor effect for an assessment on the embankment, but that the assessment on the bridge may show significant differences depending on whether the inertial components of the vehicle (multibody model) are considered.</abstract>
    <parentTitle language="eng">EURODYN 2014 - 9th International conference on structural dynamics (Proceedings)</parentTitle>
    <identifier type="old">34138</identifier>
    <identifier type="isbn">978-972-752-165-4</identifier>
    <identifier type="issn">2311-9020</identifier>
    <enrichment key="eventName">EURODYN 2014 - 9th International conference on structural dynamics</enrichment>
    <enrichment key="eventPlace">Porto, Portugal</enrichment>
    <enrichment key="eventStart">30.06.2014</enrichment>
    <enrichment key="eventEnd">02.07.2014</enrichment>
    <enrichment key="date_peer_review">11.08.2014</enrichment>
    <author>Jeffrey Bronsert</author>
    <author>Matthias Baeßler</author>
    <author>Pablo Cuéllar</author>
    <author>Werner Rücker</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Train-track-bridge-interaction</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Bridge transition zone</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Assessment criteria</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Vehicle model</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Numerical model</value>
    </subject>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
  </doc>
  <doc>
    <id>46004</id>
    <completedYear/>
    <publishedYear>2018</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>V009T10A013, 1</pageFirst>
    <pageLast>9</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>9</volume>
    <type>conferenceobject</type>
    <publisherName/>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Insights into compaction grouting for offshore pile foundations</title>
    <abstract language="eng">The authors are currently investigating the possibility to apply compaction grouting for offshore pile foundations (Jacket piles as well as monopiles) as a possible retrofitting technique for an optimised foundation concept. In this research project, we are developing a design approach aiming to predict the ideal amount and properties of a grout for a specific soil situation and desired improvement of pile bearing capacity after Installation and during service time. Both numerical and experimental tests have been carried out to investigate the injection process during which a highly viscous grout is injected into the soil under high pressure to displace and compact the surrounding soil without fracturing it. The implicit Material Point Method (MPM) based on a mixed formulation is the numerical technique chosen to deal with the expected large deformations and the arbitrary shape of the developing grout bulb. The usage of MPM prevents both the need of remeshing and the numerical instability induced by extensive mesh distortion. For validation with experimental results, we have constructed a testing chamber with one transparent sidewall. This chamber enables us to observe the injection process directly at the transparent vertical window and to measure the in-plane soil displacements and strains by means of the Digital Image Correlation (DIC) technique.&#13;
The results already reveal the interrelation of soil and grout properties for a successful usage of this common ground improvement technique.</abstract>
    <parentTitle language="eng">Proceedings of the ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering OMAE 2018</parentTitle>
    <identifier type="isbn">978-0-7918-5130-2</identifier>
    <identifier type="issn">2153-4772</identifier>
    <enrichment key="eventName">37th International Conference on Ocean, Offshore and Arctic Engineering (OMAE 2018)</enrichment>
    <enrichment key="eventPlace">Madrid, Spain</enrichment>
    <enrichment key="eventStart">18.06.2018</enrichment>
    <enrichment key="eventEnd">22.06.2018</enrichment>
    <enrichment key="date_peer_review">29.11.2018</enrichment>
    <author>Peter Geißler</author>
    <author>Pablo Cuéllar</author>
    <author>Götz Hüsken</author>
    <author>Hans-Carsten Kühne</author>
    <author>Matthias Baeßler</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Offshore pile foundation</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Compaction grouting</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Material Point Method (MPM)</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Mixed formulation</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Digital Image Correlation (DIC)</value>
    </subject>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="ddc" number="624">Ingenieurbau</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Graue Literatur</collection>
  </doc>
  <doc>
    <id>49166</id>
    <completedYear/>
    <publishedYear>2020</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>355</pageFirst>
    <pageLast>369</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>91</volume>
    <type>bookpart</type>
    <publisherName>Springer</publisherName>
    <publisherPlace>Cham, Switzerland</publisherPlace>
    <creatingCorporation>IBF KIT</creatingCorporation>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Stability and large deformations of slender structures supported by soil materials</title>
    <abstract language="eng">The stability and geometric nonlinearities of slender structures are a major topic in structural design. While this topic is most relevant in the field of Structural Engineering, e.g. for steel or concrete structures, only few applications take the role of soil-structure-interaction explicitly into account. The focus of this paper is placed on the impact of soil support and its modelling for the buckling analysis based on examples both for pile foundations and for railway track stability. The general interaction between steel design and the geotechnical input will be addressed. The paper discusses and summarizes a range of subtopics based on experience and current research at the author’s institute.</abstract>
    <parentTitle language="eng">Recent Developments of Soil Mechanics and Geotechnics in Theory and Practice; Lecture Notes in Applied and Computational Mechanics</parentTitle>
    <identifier type="isbn">978-3-030-28515-9</identifier>
    <identifier type="isbn">978-3-030-28516-6</identifier>
    <identifier type="doi">10.1007/978-3-030-28516-6</identifier>
    <identifier type="issn">1613-7736</identifier>
    <identifier type="issn">1860-0816</identifier>
    <enrichment key="date_peer_review">13.02.2020</enrichment>
    <author>Matthias Baeßler</author>
    <author>Pablo Cuéllar</author>
    <author>A. Victor</author>
    <author>F. Lüddecke</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Buckling soil-structure-interaction offshore piles track</value>
    </subject>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="institutes" number="">7 Bauwerkssicherheit</collection>
    <collection role="institutes" number="">7.2 Ingenieurbau</collection>
    <collection role="themenfelder" number="">Energie</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
  </doc>
  <doc>
    <id>26738</id>
    <completedYear/>
    <publishedYear>2012</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>219</pageFirst>
    <pageLast>228</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>4</volume>
    <type>conferenceobject</type>
    <publisherName>ASME</publisherName>
    <publisherPlace>New York, N.Y.</publisherPlace>
    <creatingCorporation>American Society of Mechanical Engineers (ASME)</creatingCorporation>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Pore-pressure accumulation and soil softening around pile foundations for offshore wind turbines</title>
    <parentTitle language="eng">OMAE 2012 - 31st International conference on ocean, offshore and arctic engineering (Proceedings)</parentTitle>
    <identifier type="old">29520</identifier>
    <identifier type="isbn">978-0-7918-4491-5</identifier>
    <enrichment key="bibliotheksstandort">Sonderstandort: Publica-Schrank</enrichment>
    <enrichment key="eventName">OMAE 2012 - 31st International conference on ocean, offshore and artic engineering</enrichment>
    <enrichment key="eventPlace">Rio de Janeiro, Brazil</enrichment>
    <enrichment key="eventStart">2012-07-01</enrichment>
    <enrichment key="eventEnd">2012-07-06</enrichment>
    <enrichment key="date_peer_review">22.10.2012</enrichment>
    <author>Pablo Cuéllar</author>
    <author>Matthias Baeßler</author>
    <author>Werner Rücker</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Offshore pile foundation</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Cyclic loading</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Coupled numerical modelling</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Pore-pressure accumulation</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Softening</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Liquefaction</value>
    </subject>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access")</collection>
  </doc>
  <doc>
    <id>26981</id>
    <completedYear/>
    <publishedYear>2012</publishedYear>
    <thesisYearAccepted/>
    <language>deu</language>
    <pageFirst>585</pageFirst>
    <pageLast>593</pageLast>
    <pageNumber/>
    <edition/>
    <issue>9</issue>
    <volume>89</volume>
    <type>article</type>
    <publisherName>Ernst &amp; Sohn</publisherName>
    <publisherPlace>Berlin</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="deu">Porenwasserdruckaufbau und Bodenentfestigung um Pfahlgründungen von Offshore-Windenergieanlagen</title>
    <abstract language="deu">Die Gründung von Offshore-Windenergieanlagen erfordert oft die Installation von Stahl-Pfählen mit großem Durchmesser, entweder als Monopile- oder Mehrpfahl-Konfiguration (Jacket, Tripod, usw.). In dieser Veröffentlichung werden die Auswirkungen einer zyklischen lateralen Belastung auf Offshore-Pfahlgründungen untersucht. Hierbei wird besonderes Augenmerk auf die Entwicklung des Porenwasserdrucks im umgebenden gesättigten Boden gelegt. Es wird gezeigt, dass der progressive Aufbau von Porenwasserdruck zu erheblichen Veränderungen des Verhaltens der Gründung unter externer Belastung führen kann, die die Stabilität bzw. Gebrauchstauglichkeit der Anlage potenziell gefährden. Dazu werden auch einige Effekte, die während eines realistischen Sturms von moderater Stärke entstehen, untersucht. Die transiente Abminderung der Gründungssteifigkeit wird hierbei thematisiert. Die genannten Aspekte wurden von den Autoren mittels eines gekoppelten zweiphasigen numerischen Modells der Offshore-Gründung untersucht. Das verwendete Stoffgesetz für den Boden, im Rahmen der Theorie der verallgemeinerten Plastizität, kann wichtige Merkmale von zyklischem Bodenverhalten reproduzieren, wie z. B. die Tendenz zu einer fortschreitenden Verdichtung unter zyklischer Belastung, die für Verflüssigungsphänomene unter undränierten Bedingungen verantwortlich ist. Die Notwendigkeit der Verwendung eines solchen Ansatzes wird hier anhand von Vergleichsberechnungen mit einem einfacheren Stoffmodell bzw. mit einem ungekoppelten Modell erörtet. Abschließend werden einige Implikationen der untersuchten Fragenstellungen für die praktische Bemessung von Offshore-Monopiles diskutiert und spezifische Empfehlungen gegeben.---------------------------------------------------------------------------------------------------------------------------
For the installation of wind turbines in the offshore environment and their foundation in the seabed it is customary to employ large-diameter steel piles, either in monopile or multi-pile configurations (jacket, tripod, etc. ...). The effects of cyclic lateral loading on the offshore piles and particularly the possibility of a progressive accumulation of residual pore water pressure within the saturated embedding soil are discussed in this article. Here it is shown that this can lead to significant changes of their behaviour under external loading, which can potentially compromise the foundation's stability or serviceability. Furthermore, some of the singular effects arising during a realistic storm of moderate magnitude as well as their potential for transient damages to the foundation's stiffness are addressed in the paper. For the investigation of these phenomena the authors have employed a coupled bi-phasic analytical model of the offshore foundation. The constitutive model employed for the seabed, in the frame of the theory of Generalized Plasticity, can reproduce some complex features of cyclic soil behaviour such as the tendency for a progressive densification under cyclic loading, which is responsible for the soil liquefaction phenomena in undrained conditions. Finally, some implications and specific recommendations for the design of offshore monopiles in the frame of the limit states are provided.</abstract>
    <parentTitle language="deu">Bautechnik</parentTitle>
    <identifier type="old">29768</identifier>
    <identifier type="doi">10.1002/bate.201200031</identifier>
    <identifier type="issn">0932-8351</identifier>
    <identifier type="issn">1437-0999</identifier>
    <identifier type="issn">0005-6820</identifier>
    <identifier type="issn">0341-1052</identifier>
    <identifier type="issn">0932-6359</identifier>
    <identifier type="issn">0932-8351</identifier>
    <enrichment key="bibliotheksstandort">Sonderstandort: Publica-Schrank</enrichment>
    <enrichment key="date_peer_review">15.11.2012</enrichment>
    <author>Pablo Cuéllar</author>
    <author>Matthias Baeßler</author>
    <author>Steven Georgi</author>
    <author>Werner Rücker</author>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Porenwasserdruckaufbau</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Offshore-Pfahlgründung</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Belastung</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Zyklische</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Pore pressure build-up</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Offshore pile foundation</value>
    </subject>
    <subject>
      <language>deu</language>
      <type>uncontrolled</type>
      <value>Cyclic loading</value>
    </subject>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access")</collection>
  </doc>
  <doc>
    <id>20104</id>
    <completedYear/>
    <publishedYear>2009</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1</pageFirst>
    <pageLast>12(?)</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>article</type>
    <publisherName>Springer</publisherName>
    <publisherPlace>Berlin ; Heidelberg</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Ratcheting convective cells of sand grains around offshore piles under cyclic lateral loads</title>
    <abstract language="eng">Sand densification around the pile has traditionally been regarded as an explanation for the grain migration and soil subsidence that often occur around cyclic laterally loaded piles embedded in sand. Supported by new empirical evidence, this paper proposes that, additionally to some soil densification around the pile, the main cause for the continuous "steady-state" grain migration is a convective cell flow of sand grains in the vicinities of the pile head. Such convective flow would be caused by a ratcheting mechanism triggered by the cyclic low-frequency lateral displacements of the pile. Furthermore, the experimental results suggest that the limit between the convective cell and the static soil is marked by a distinct direct shear surface. This might shed some light into the complex phenomena related to the pile-soil interaction in the upper layers of the bedding, which are normally the main contributor for the lateral load-bearing capacity of piles.</abstract>
    <parentTitle language="eng">Granular matter</parentTitle>
    <identifier type="old">22385</identifier>
    <identifier type="doi">10.1007/s10035-009-0153-3</identifier>
    <identifier type="issn">1434-5021</identifier>
    <identifier type="issn">1434-7636</identifier>
    <enrichment key="bibliotheksstandort">Sonderstandort: Publica-Schrank</enrichment>
    <enrichment key="date_peer_review">19.10.2009</enrichment>
    <author>Pablo Cuéllar</author>
    <author>Matthias Baeßler</author>
    <author>Werner Rücker</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Grain migration</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Pile foundation</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Cyclic lateral load</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Ratcheting</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Convection</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Densification</value>
    </subject>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access")</collection>
  </doc>
  <doc>
    <id>64416</id>
    <completedYear/>
    <publishedYear>2025</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>114</pageFirst>
    <pageLast>121</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject</type>
    <publisherName>International Group of Operational Modal Analysis</publisherName>
    <publisherPlace>Gijón, Spain</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">System identification and model calibration of a steel road  bridge</title>
    <abstract language="eng">The Bundesanstalt für Materialforschung und -prüfung (BAM), in cooperation with the Netherlands Organization for Applied Scientific Research (TNO), is working on a framework for integrating frequently updated structural models into an asset management process for bridge structures. A multi-span steel road bridge was selected as a test case for the development of this framework. In order for the structural model to represent the real behavior of the bridge with sufficient accuracy, model calibration is required. In this case, we have planned to calibrate the model based on the dynamic response of the bridge. To determine its dynamic properties, a multi-setup operational modal analysis was performed on one of the bridge spans. In parallel, a structural model of the span was developed based on the available design and service life information. Both eigenfrequencies and mode shapes were used as reference parameters to calibrate the model. A sensitivity analysis was performed to identify the most influential design parameters. Subsequently, a genetic algorithm was applied for minimizing the difference between measured and simulated characteristic responses. In the proposed paper, we summarize the measurements as well as the determination of the modal response of the bridge and describe the process of calibration of the structural model using the identified dynamic response.</abstract>
    <parentTitle language="eng">Proceedings of the 11th International Operational Modal Analysis Conference (IOMAC 2025)</parentTitle>
    <identifier type="isbn">978-84-09-75120-4</identifier>
    <enrichment key="eventName">11th International Operational Modal Analysis Conference (IOMAC 2025)</enrichment>
    <enrichment key="eventPlace">Rennes, France</enrichment>
    <enrichment key="eventStart">20.05.2025</enrichment>
    <enrichment key="eventEnd">23.05.2025</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="date_peer_review">01.12.2025</enrichment>
    <author>Falk Hille</author>
    <author>Ronald Schneider</author>
    <author>Patrick Simon</author>
    <author>Ralf Herrmann</author>
    <author>Matthias Baeßler</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Bridge structure</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Operational modal analysis</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Model calibration</value>
    </subject>
    <collection role="ddc" number="624">Ingenieurbau</collection>
    <collection role="institutes" number="">7 Bauwerkssicherheit</collection>
    <collection role="institutes" number="">7.2 Ingenieurbau</collection>
    <collection role="themenfelder" number="">Infrastruktur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Graue Literatur</collection>
    <collection role="themenfelder" number="">Verkehrsinfrastrukturen</collection>
  </doc>
  <doc>
    <id>45922</id>
    <completedYear/>
    <publishedYear>2018</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>170</pageFirst>
    <pageLast>180</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>189</volume>
    <type>article</type>
    <publisherName>Elsevier Ltd.</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Ternary mix design of grout material for structural repair using statistical tools</title>
    <abstract language="eng">Repair is an indispensable part of the maintenance of structures over their lifetimes. Structural grouting is a widely used remediation technique for concrete components, trenches, mine subsidence, dam joints, restoration of masonry structures, and geological stabilizations. A structural grout system should be injectable in narrow spaces and hence include ingredients with finer particles. Ultrafine cements are ideal for these type of demanding grouts due to their superior properties compared to that of the less expensive, but coarser ordinary Portland cement (OPC). Supplementary cementitious materials (SCMs) are often used to replace OPC clinker based binder in order to modify certain properties and to reduce costs. The most commonly used SCMs are fly ash (FA), and ground granulated blast furnace slag (GGBS). For various special applications microsilica (MS), and metakaolin (MK) are also used. Identifying the optimum replacement contents of OPC by SCMs are a challenge during the design of such grouts. The aim of this experimental study is to investigate the effect of the selected SCMs (FA, MS and MK) on the slump flow, time of efflux, viscosity, shrinkage, and compressive and flexural strength of ultrafine cement based grouts with constant water-binder ratio and superplasticizer content. The test program was formulated using Box-Behnken design principles. Maximum percentages of replacement with ultrafine cement was 6% by volume of cement for MS and 16% for FA, and MK. The results suggest that most investigated grouts have the potential to be used for structural applications. The appropriate quadratic models are then formulated through statistical tools and presented as response surfaces. The trends indicate that fly ash improves the rheological properties, whereas microsilica and metakaolin positively affect shrinkage and mechanical properties to some extent. Based on the influence of SCMs and priorities among the properties, Decision Matrix Analysis (DMA) is carried out to select the most suitable ones among the SCMs. The analysis suggests that microsilica and fly ash are more suitable as SCMs than metakaolin without affecting the properties.</abstract>
    <parentTitle language="eng">Construction and Building Materials</parentTitle>
    <identifier type="doi">10.1016/j.conbuildmat.2018.08.156</identifier>
    <identifier type="issn">0950-0618</identifier>
    <identifier type="issn">1879-0526</identifier>
    <enrichment key="date_peer_review">22.11.2018</enrichment>
    <author>Md Shamsuddoha</author>
    <author>Götz Hüsken</author>
    <author>Wolfram Schmidt</author>
    <author>Hans-Carsten Kühne</author>
    <author>Matthias Baeßler</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Grouting</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Microsilica</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Fly ash</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Metakaolin</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Workability</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Viscosity</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Strength</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Mix design</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Box-Behnken</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Decision matrix analysis</value>
    </subject>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
  </doc>
  <doc>
    <id>30453</id>
    <completedYear/>
    <publishedYear>2014</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>1</pageFirst>
    <pageLast>4</pageLast>
    <pageNumber/>
    <edition/>
    <issue>012095</issue>
    <volume>490</volume>
    <type>article</type>
    <publisherName>IOP Publ.</publisherName>
    <publisherPlace>Bristol, UK</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">A method for system identification of a structure supported by nonlinear springs using evolutionary computing</title>
    <abstract language="eng">A mechanical structure supported by nonlinear springs subjected to an external load is considered. If all mechanical parameters of the system were known, the displacement of the system subjected to this load could be easily calculated. If not all of the parameters are known, but the load and the displacement are measured at one location, an inverse problem exists. In the presented problem the nonlinear springs are unknown and have to be determined. At first glance a problem needs to be solved, which is underdetermined due to the number of unknown variables. However, evolutionary computing can be applied to solve this inverse, nonlinear and multimodal problem. Sometimes a prior knowledge exists on certain system properties, which is difficult to implement into analytical or numerical solver. This knowledge can play a decisive role in identifying the system properties and it can be easily included as boundary condition when applying evolutionary algorithm. This article examines how and under what conditions the spring resistances can be identified. The procedure is exemplified at a mechanical system of a pile foundation.</abstract>
    <parentTitle language="eng">Journal of physics / Conference series</parentTitle>
    <identifier type="old">33426</identifier>
    <identifier type="doi">10.1088/1742-6596/490/1/012095</identifier>
    <identifier type="url">http://iopscience.iop.org/1742-6596/490/1/012095/pdf/1742-6596_490_1_012095.pdf</identifier>
    <identifier type="issn">1742-6588</identifier>
    <identifier type="issn">1742-6596</identifier>
    <identifier type="urn">urn:nbn:de:kobv:b43-304531</identifier>
    <enrichment key="eventName">2nd International conference on mathematical modeling in physical sciences 2013</enrichment>
    <enrichment key="eventPlace">Prague, Czech Republic</enrichment>
    <enrichment key="eventStart">01.09.2013</enrichment>
    <enrichment key="eventEnd">05.09.2013</enrichment>
    <enrichment key="zsBemerkung">Die Aufnahme ist grundsätzlich falsch, da es sich trotz des Titels ("Journal of physics / Conference series") nicht um eine Zeitschrift handelt, sondern um eine Tagungsband-Reihe. Da sehr viele Artikel an diesem Eintrag hängen, wäre die Korrektur aber extrem aufwändig.  Die Tagungsband-Reihe findet sich in der Master Journal List bzw. in dem Journal Citation Report selbstverständlich nicht wieder, da es ja keine Zeitschrift ist. Allerdings wird die Tagungsband-Reihe sehr wohl von Thomson-Reuters für Ihre Datenbank ausgewertet, als "Book Series". Daher muss sichergestellt werden, dass die dort erscheinenden Artikel auch für die "1000-Euro-Liste" berücksichtigt werden.  Die einfachste Lösung ist es, den Eintrag als Zeitschrift zu belassen, und das Häkchen bei "In MJL/CPCI von ISI enthalten" zu setzen. Das ist zwar formal nicht ganz korrekt, erzeugt aber das richtige Ergebnis.  Jan Harloff-Puhr 11.7.2014</enrichment>
    <enrichment key="date_peer_review">31.03.2014</enrichment>
    <licence>Creative Commons - Namensnennung 3.0</licence>
    <author>Krassimire Karabeliov</author>
    <author>Matthias Baeßler</author>
    <author>Pablo Cuéllar</author>
    <author>Werner Rücker</author>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei für die Öffentlichkeit verfügbar ("Open Access")</collection>
    <collection role="unnumberedseries" number="">Wissenschaftliche Artikel der BAM</collection>
    <thesisPublisher>Bundesanstalt für Materialforschung und -prüfung (BAM)</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-bam/files/30453/Karabeliov_2014_J._Phys.__Conf._Ser._490_012095.pdf</file>
  </doc>
  <doc>
    <id>47831</id>
    <completedYear/>
    <publishedYear>2019</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>Article Number 01001</pageFirst>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>278</volume>
    <type>conferenceobject</type>
    <publisherName>EDP Sciences</publisherName>
    <publisherPlace/>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Superplasticizer and Shrinkage Reducing Admixture Dosages for Microfine Cement in Grout Systems</title>
    <abstract language="eng">Grouts have numerous applications including crack repair as maintenance in construction industries. Microfine cements are intensively used for high strength mortar and grout products. They are ideal for injection grouting in structural repair. Such grouts should have suitable rheological properties to be injectable, especially those used in repair and rehabilitation. The use of superplasticizers (SP) in these products is thus becoming increasingly crucial to achieve favorable workability and viscosity properties. A difficulty in such grouts is the plastic shrinkage due to finer particles used. It is thus necessary to determine optimum SP and shrinkage reducing admixture (SRA) dosages for a microfine cement based grout. In this study, a saturation dosage was decided from two Polycarboxylate ether (PCE) based SPs in relation to neat cement using slump flow and rheological parameters. A range of grout mixtures was formulated containing micro silica (MS) and fly ash (FA), and tested for suitable rheological and mechanical parameters. Based on the results, a grout mixture with MS and FA was selected to determine optimum SRA content. According to the results, a SP dosage of 3% by weight of neat cement is sufficient to achieve saturation. The grout material including MS and FA can produce comparable properties to neat cement grout. MS is found to improve compressive strength within the range considered, whereas a higher FA content provides favourable rheological properties. Finally, a SRA dosage of 4%, which could reduce the shrinkage by about 43% after 28d days, is determined for the grout system.</abstract>
    <parentTitle language="eng">MATEC Web of Conferences</parentTitle>
    <identifier type="doi">10.1051/matecconf/201927801001</identifier>
    <identifier type="urn">urn:nbn:de:kobv:b43-478319</identifier>
    <enrichment key="eventName">2nd International Conference on Building Materials and Materials Engineering (ICBMM 2018)</enrichment>
    <enrichment key="eventPlace">University of Lisbon, Portugal</enrichment>
    <enrichment key="eventStart">26.09.2018</enrichment>
    <enrichment key="eventEnd">28.09.2018</enrichment>
    <enrichment key="date_peer_review">12.10.2020</enrichment>
    <licence>Creative Commons - CC BY - Namensnennung 4.0 International</licence>
    <author>Md Shamsuddoha</author>
    <author>Götz Hüsken</author>
    <author>Wolfram Schmidt</author>
    <author>Hans-Carsten Kühne</author>
    <author>Matthias Baeßler</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Grout</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Microfine Cement</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Superplasticizer</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Supplementary Cementitious Materials</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Shrinkage Reducing Admixture</value>
    </subject>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="fulltextaccess" number="">Datei für die Öffentlichkeit verfügbar ("Open Access")</collection>
    <collection role="literaturgattung" number="">Graue Literatur</collection>
    <collection role="unnumberedseries" number="">Wissenschaftliche Artikel der BAM</collection>
    <thesisPublisher>Bundesanstalt für Materialforschung und -prüfung (BAM)</thesisPublisher>
    <file>https://opus4.kobv.de/opus4-bam/files/47831/Shamsuddoha et al. - MATEC Web Conf. 278_01001.pdf</file>
  </doc>
  <doc>
    <id>48444</id>
    <completedYear/>
    <publishedYear>2019</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>Article Number:  UNSP V001T10A013</pageFirst>
    <pageLast/>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>2019</volume>
    <type>conferenceobject</type>
    <publisherName>ASME</publisherName>
    <publisherPlace>Glasgow, Scotland</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">An enhanced interface model for friction fatigue problems of axially loaded piles</title>
    <abstract language="eng">The shaft bearing capacity often plays a dominant role for the overall structural behaviour of axially loaded piles in offshore deep foundations. Under cyclic loading, a narrow zone of soil at the pile-soil interface is subject to cyclic shearing solicitations. Thereby, the soil may densify and lead to a decrease of confining stress around the pile due to microphenomena such as particle crushing, migration and rearrangement. This reduction of radial stress has a direct impact on the shaft capacity, potentially leading in extreme cases to pile failure. An adequate interface model is needed in order to model this behaviour numerically. Different authors have proposed models that take typical Interface phenomena in account such as densification, grain breakage, normal pressure effect and roughness. However, as the models become more complex, a great number of material parameters need to be defined and calibrated. This paper proposes the adoption and transformation of an existing soil bulk model (Pastor- Zienkiewicz) into an interface model. To calibrate the new interface model, the results of an experimental campaign with the ring shear device under cyclic loading conditions are here presented. The constitutive model shows a good capability to reproduce typical features of sand behaviour such as cyclic compaction and dilatancy, which in saturated partially-drained conditions may lead to liquefaction and cyclic mobility phenomena.</abstract>
    <parentTitle language="eng">OMAE 2019</parentTitle>
    <enrichment key="eventName">Conference: OMAE</enrichment>
    <enrichment key="eventPlace">Glasgow, Scotland, UK</enrichment>
    <enrichment key="eventStart">09.06.2019</enrichment>
    <enrichment key="eventEnd">14.06.2019</enrichment>
    <enrichment key="date_peer_review">05.03.2020</enrichment>
    <author>Borana Kullolli</author>
    <author>Matthias Baeßler</author>
    <author>Pablo Cuéllar</author>
    <author>S. Rica</author>
    <author>F. Rackwitz</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Soil-structure interaction</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Interface</value>
    </subject>
    <collection role="ddc" number="621">Angewandte Physik</collection>
    <collection role="ddc" number="624">Ingenieurbau</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Graue Literatur</collection>
  </doc>
  <doc>
    <id>49167</id>
    <completedYear/>
    <publishedYear>2019</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>Paper 324, 1</pageFirst>
    <pageLast>Paper 324, 6</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject</type>
    <publisherName>CRC Press</publisherName>
    <publisherPlace>Boca Raton</publisherPlace>
    <creatingCorporation>Department of Civil Engineering, University of Cape Town</creatingCorporation>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Impact of environmental based effects on SHM strategies</title>
    <abstract language="eng">Environmental based perturbations influence significantly the ability to identify structural dam-age in Structural Health Monitoring. Strategies are needed to classify such effects and consider them appropri-ately in SHM. It has to be considered if seasonal effects just mask the structural response or if temperature itself correlates to a weakening of the structure. Various methods have been developed and analyzed to separate environmental based effects from damage induced changes in the measures. Generally, two main approaches have emerged from research activity in this fields: (a) statistics-based tools analyzing patterns in the data or in computed parameters and (b) methods, utilizing the structural model of the bridge considering environmental as well as damage-based changes of stiffness values. With the background of increasing affordability of sensing and computing technology, effort should be made to increase sensitivity, reliability and robustness of proce-dures, separating environmental from damage caused changes in SHM measures. The contribution describes an attempt to evaluate both general strategies, their advantages and drawbacks. In addition, two vibration moni-toring procedures are introduced, allowing for temperature-based perturbations of the monitoring data.</abstract>
    <parentTitle language="eng">Advances in Engineering Materials, Structures and Systems: Innovations, Mechanics and Applications</parentTitle>
    <identifier type="isbn">978-1-138-38696-9</identifier>
    <identifier type="isbn">978-0-429-42650-6</identifier>
    <identifier type="doi">10.1201/9780429426506</identifier>
    <enrichment key="eventName">SEMC 2019</enrichment>
    <enrichment key="eventPlace">Cape Town, South Africa</enrichment>
    <enrichment key="eventStart">02.09.2019</enrichment>
    <enrichment key="eventEnd">04.09.2019</enrichment>
    <enrichment key="date_peer_review">20.01.2020</enrichment>
    <author>Matthias Baeßler</author>
    <author>Delwar Bhuyan</author>
    <author>Falk Hille</author>
    <author>Eva Viefhues</author>
    <author>M. Döhler</author>
    <author>L. Mevel</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>SHM environmental bridges</value>
    </subject>
    <collection role="ddc" number="624">Ingenieurbau</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="literaturgattung" number="">Graue Literatur</collection>
  </doc>
  <doc>
    <id>64265</id>
    <completedYear/>
    <publishedYear>2025</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>595</pageFirst>
    <pageLast>604</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume/>
    <type>conferenceobject</type>
    <publisherName>Springer</publisherName>
    <publisherPlace>Cham</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">Review of Ballasted Track Destabilization on Shake Table Tests</title>
    <abstract language="eng">Shake table tests have been used for a long time to understand the densification and fluidization of granular materials. While purely vertical shaking is quite unlikely to be found in vibration analysis when it comes to granular materials as soils, it has been found that the vertical vibration of railway bridge support structures can affect the fabric of the ballasted track on top. Starting from the experience at French railway lines with destabilizing track conditions on short bridges in high speed lines in the 1990s, various shake table test configurations have been used to investigate the destabiliza-tion of ballast at high acceleration levels. This article describes the effects of the variously investigated dynamic excitations of railway bridges on the bal-lasted track itself.</abstract>
    <parentTitle language="eng">Experimental Vibration Analysis for Civil Engineering Structures, EVACES 2025 - Volume 2</parentTitle>
    <identifier type="doi">10.1007/978-3-031-96106-9_62</identifier>
    <identifier type="isbn">978-3-031-96105-2</identifier>
    <enrichment key="eventName">11th International Conference on Experimental Vibration Analysis for Civil Engineering Structures (EVACES 2025)</enrichment>
    <enrichment key="eventPlace">Porto, Portugal</enrichment>
    <enrichment key="eventStart">02.07.2025</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="eventEnd">04.07.2025</enrichment>
    <enrichment key="date_peer_review">22.12.2025</enrichment>
    <author>Matthias Baeßler</author>
    <author>Patrick Simon</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Infrastructure</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Ballasted track</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Ballast</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Railway bridge dynamics</value>
    </subject>
    <collection role="ddc" number="624">Ingenieurbau</collection>
    <collection role="institutes" number="">7 Bauwerkssicherheit</collection>
    <collection role="institutes" number="">7.2 Ingenieurbau</collection>
    <collection role="themenfelder" number="">Infrastruktur</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
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  <doc>
    <id>64267</id>
    <completedYear/>
    <publishedYear>2025</publishedYear>
    <thesisYearAccepted/>
    <language>eng</language>
    <pageFirst>506</pageFirst>
    <pageLast>515</pageLast>
    <pageNumber/>
    <edition/>
    <issue/>
    <volume>675</volume>
    <type>conferenceobject</type>
    <publisherName>Springer</publisherName>
    <publisherPlace>Cham</publisherPlace>
    <creatingCorporation/>
    <contributingCorporation/>
    <belongsToBibliography>1</belongsToBibliography>
    <completedDate>--</completedDate>
    <publishedDate>--</publishedDate>
    <thesisDateAccepted>--</thesisDateAccepted>
    <title language="eng">On the reassessment of bridge superstructure vibrations for high-speed traffic</title>
    <abstract language="eng">The acceleration thresholds of bridge superstructures remain critical for designing and reassessing railway bridges on high-speed lines, with ballasted track systems historically limited to 3.5 m/s2 vertical accelerations due to destabilization risks. As part of the European InBridge4EU project, this study addresses methodological uncertainties in linking vertical bridge vibrations to lateral track creep—a key focus area for modernizing assessment protocols. A comparative analysis of two acceleration postprocessing methods (peak identification vs. fatigue-derived rainflow counting) as part of a recently proposed framework was conducted using an example bridge and train combination. Results demonstrate that rainflow counting yields more conservative creep estimates with the bulk of cumulative vibration-induced creep attributable to accelerations exceeding 3 m/s2. However, discretizing acceleration ranges into 1 m/s2 bins introduced significant errors compared to continuous cycle data, highlighting sensitivity to analysis parameters. These findings underscore the complexity of reconciling laboratory-derived harmonic vibration models with real-world bridge dynamics, where non-uniform acceleration patterns dominate. The research directly informs ongoing efforts to refine standardized criteria for ballasted track stability, particularly through the InBridge4EU project’s systematic re-evaluation of vibration limits and their engineering implications. By quantifying discrepancies between computational approaches, this work advances the development of robust protocols for predicting track degradation under high-speed operational loads.</abstract>
    <parentTitle language="eng">Experimental Vibration Analysis for Civil Engineering Structures, EVACES 2025 - Volume 2</parentTitle>
    <identifier type="doi">10.1007/978-3-031-96106-9_53</identifier>
    <identifier type="isbn">978-3-031-96105-2</identifier>
    <enrichment key="eventName">11th International Conference on Experimental Vibration Analysis for Civil Enginering Structures (EVACES 2025)</enrichment>
    <enrichment key="eventPlace">Porto, Portugal</enrichment>
    <enrichment key="eventStart">02.07.2025</enrichment>
    <enrichment key="eventEnd">04.07.2025</enrichment>
    <enrichment key="opus.source">publish</enrichment>
    <enrichment key="date_peer_review">22.12.2025</enrichment>
    <author>Patrick Simon</author>
    <author>Matthias Baeßler</author>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Infrastructure</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Railway bridges</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Ballast destabilization</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Acceleration limit</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Ballasted track</value>
    </subject>
    <subject>
      <language>eng</language>
      <type>uncontrolled</type>
      <value>Rainflow counting</value>
    </subject>
    <collection role="ddc" number="624">Ingenieurbau</collection>
    <collection role="institutes" number="">7 Bauwerkssicherheit</collection>
    <collection role="institutes" number="">7.2 Ingenieurbau</collection>
    <collection role="themenfelder" number="">Infrastruktur</collection>
    <collection role="literaturgattung" number="">Verlagsliteratur</collection>
    <collection role="fulltextaccess" number="">Datei im Netzwerk der BAM verfügbar ("Closed Access")</collection>
    <collection role="themenfelder" number="">Verkehrsinfrastrukturen</collection>
  </doc>
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