@article{BenekosDiamantidis, author = {Benekos, Ioannis and Diamantidis, Dimitris}, title = {On risk assessment and risk acceptance of dangerous goods transportation through road tunnels in Greece}, series = {Safety Science}, volume = {91}, journal = {Safety Science}, number = {91}, publisher = {Elsevier}, doi = {10.1016/j.ssci.2016.07.013}, pages = {1 -- 10}, abstract = {Prescriptive and risk-based methods including qualitative, semi-quantitative and quantitative approaches exist for the risk assessment of road tunnels. This paper provides an overview and a brief discussion of these methods and uses representative traffic and accident data in Greece in a typical tunnel conforming with the minimum infrastructure requirements of the European Directive 2004/54/EC to compare and discuss the resulting risk for each of these methods. Conclusions regarding the implementation of risk analysis methods and the use of the associated existing national guideline are drawn and recommendations for further developments in standards are provided. An integrated framework for the optimal selection of safety measures based on risk reduction and socio-economic considerations is proposed and its applicability in risk analysis of road tunnels is discussed. (C) 2016 Elsevier Ltd. All rights reserved.}, language = {en} } @article{SykoraDiamantidisHolickyetal., author = {S{\´y}kora, Miroslav and Diamantidis, Dimitris and Holicky, Milan and Jung, Karel}, title = {Target reliability for existing structures considering economic and societal aspects}, series = {Structure and infrastructure engineering}, volume = {13}, journal = {Structure and infrastructure engineering}, number = {1}, publisher = {Taylor\&Francis}, doi = {10.1080/15732479.2016.1198394}, pages = {181 -- 194}, abstract = {Specification of target reliability levels is one of the key issues of the assessment of existing structures. ISO 13822:2010 and ISO 2394:2015 indicate procedures for specification of target reliability levels by optimisation of the total cost related to an assumed remaining working life of a structure. These approaches are critically compared with human safety criteria, with target levels based on a marginal life-saving costs principle, and with recommendations of present standards. Optimal target reliability levels are then derived in the representative case study for an existing structural member. It appears that the requirement to reach the same target reliability levels for existing and new structures is uneconomical. Decisions made in the assessment can result in the acceptance of the actual state or in the upgrade of an existing structure. Two reliability levels are thus needed - the minimum level below which the structure is unreliable and should be upgraded, and the target level indicating an optimum upgrade strategy. It is recommended that these levels be established using economic optimisation and the marginal life-saving costs principle, as both the approaches take into account the costs of safety measures and the failure consequences.}, language = {en} } @article{Schermer, author = {Schermer, Detleff}, title = {The simplified calculation method of DIN EN 1996-3 in practice}, series = {Mauerwerk}, volume = {19}, journal = {Mauerwerk}, number = {6}, publisher = {Wiley}, doi = {10.1002/dama.201500682}, pages = {471 -- 478}, abstract = {The design and detailing of masonry buildings was usually undertaken in the past using the simplified procedure in Section 6 of DIN 1053-1 (1996-11). With the changeover to the new European code, a new procedure has been made available with the simplified calculation method of DIN EN 1996-3, which promises similarly simple and safe handling for the user. The practical implementation of this new code has been underway for some time. The article investigates the standard design cases and explains the innovations and alterations compared to DIN 1053-1.}, language = {en} } @incollection{ObergriesserKraus, author = {Obergrießer, Mathias and Kraus, Michael A.}, title = {Digitale Transformation im Bauwesen - Von der Theorie zur Anwendung}, series = {Mauerwerk-Kalender 2022: Fassadengestaltung, Bauphysik, Innovationen}, volume = {47}, booktitle = {Mauerwerk-Kalender 2022: Fassadengestaltung, Bauphysik, Innovationen}, editor = {Schermer, Detleff and Brehm, Eric}, publisher = {Ernst \& Sohn}, address = {Berlin}, isbn = {978-3-433-03356-2}, doi = {10.1002/9783433611029.ch16}, pages = {499 -- 519}, abstract = {Dieser Beitrag f{\"u}hrt zun{\"a}chst in die digitale Transformation (DT) des Bauwesens und deren wesentliche Methoden wie BIM, digitaler Zwilling etc. ein. Zur Erzielung eines begriff‌lichen und semantischen Verst{\"a}ndnisses werden die Definitionen zudem an Anwendungsbeispielen veranschaulicht. Neben den Gr{\"u}nden f{\"u}r die DT werden der Status quo sowie der Weg vom analogen Planen und Bauen zur Vision „Planen und Bauen~4.0" dargestellt. Kernelemente sind verschiedene Ansatzpunkte, Entscheidungshilfen und Schl{\"u}sse zur Begegnung der technischen und adaptiven Herausforderungen der DT auf Unternehmer‑, aber auch Hochschulniveau. Insbesondere der Faktor Mensch und dessen humane wie technische Kollaborations- und Vernetzungsf{\"a}higkeit wird in diesem Beitrag Rechnung getragen. Abschließend wird neben einer Zusammenfassung der dargestellten Inhalte zudem ein Ausblick f{\"u}r die DT im Bauwesen bis hin zum Einsatz von Robotik und KI f{\"u}r den im n{\"a}chsten Jahr erscheinenden zweiten Teil dieses Beitrags gegeben.}, language = {de} } @incollection{FinckhSchmittZilch, author = {Finckh, Wolfgang and Schmitt, Alexander and Zilch, Konrad}, title = {Example 1: Strengthening a slab with externally bonded CFRP strips}, series = {Commentary on the DAfStb guideline "Strengthening of concrete members with adhesively bonded reinforcement" with examples}, booktitle = {Commentary on the DAfStb guideline "Strengthening of concrete members with adhesively bonded reinforcement" with examples}, publisher = {Beuth}, address = {Berlin ; Wien ; Z{\"u}rich}, isbn = {978-3-410-65255-7}, issn = {0171-7197}, pages = {47 -- 68}, subject = {Betonbauteil}, language = {en} } @inproceedings{Finckh, author = {Finckh, Wolfgang}, title = {Verst{\"a}rken mit geklebter Bewehrung - Sachstand und neue Entwicklungen}, series = {13. M{\"u}nchener Massivbau Seminar 2009}, booktitle = {13. M{\"u}nchener Massivbau Seminar 2009}, editor = {Zilch, Konrad}, publisher = {F{\"o}rderverein Massivbau der TU M{\"u}nchen}, address = {M{\"u}nchen}, pages = {CD-ROM}, language = {de} } @article{Schermer, author = {Schermer, Detleff}, title = {Hybrid testing of masonry structures subjected to seismic loading}, series = {Mauerwerk}, volume = {18}, journal = {Mauerwerk}, number = {3-4}, publisher = {Ernst ; WILEY}, address = {Berlin ; Weinheim}, issn = {1437-1022}, doi = {10.1002/dama.201400625}, pages = {206 -- 212}, abstract = {The combination of experiments and numeric description in a test makes it possible to realistically investigate almost any type of system subjected to dynamic loading without requiring the extremely expensive device of a shaking table. With the numeric approach it is possible to examine the behaviour of even very large and complex structures, thus reducing the experimental investigations to the essential part of the system - for example, bracing masonry walls. This test method has proved to be very helpful, particularly for the investigation of seismic loading, and it allows the synchronous examination of several force and displacement variables (horizontal, vertical, rotational). A new laboratory is presented for the investigation of full-scale building structures up to three storeys high. Die Kombination von Experiment und numerischer Beschreibung innerhalb eines Versuches erlaubt die realit{\"a}tsnahe Untersuchung ann{\"a}hernd beliebiger Systeme unter dynamischen Beanspruchungen, ohne den extrem hohen Aufwand von R{\"u}tteltischen zu erfordern. Durch die Numerik k{\"o}nnen auch sehr große und komplexe Strukturen mit ihrem Verhalten erfasst werden, wobei sich die versuchsm{\"a}ßige Untersuchung auf den maßgebenden Teil des Systems - beispielsweise aussteifende Mauerwerksw{\"a}nde - beschr{\"a}nken kann. Insbesondere f{\"u}r Erdbebenbeanspruchung hat sich die Versuchsmethode sehr gut bew{\"a}hrt und es k{\"o}nnen mehrere Kraft- und Verschiebungsgr{\"o}ßen (horizontal, vertikal, Rotation) synchron behandelt werden. F{\"u}r die Untersuchung an vollmaßst{\"a}blichen Geb{\"a}udestrukturen bis zu drei Geschossen wird ein neues Labor vorgestellt.}, language = {en} } @article{RetiefDiamantidisBarnardoViljoenetal., author = {Retief, Johan Verster and Diamantidis, Dimitris and Barnardo-Viljoen, Celeste and van der Klashorst, Etienne}, title = {Extreme actions and climate change: experience gained in South Africa and Germany}, series = {Civil Engineering and Environmental Systems}, volume = {31}, journal = {Civil Engineering and Environmental Systems}, number = {2}, publisher = {Taylor \& Francis}, address = {Abingdon}, issn = {1029-0249}, doi = {10.1080/10286608.2014.912640}, pages = {179 -- 188}, abstract = {The results of a survey of climate change developments in South Africa and Germany from the perspective of its relevance to extreme actions on infrastructure are presented in this paper. It is concluded that the importance of climate change is broad and varied. However incorporation into practice is mostly nominal. Although general trends of climate change are confirmed, proper information on changes in extreme conditions is limited. Coastal engineering seems to be the field which is most active in providing for climate change. It is concluded that risk-based methodologies developed to treat the variability and uncertainties of extreme actions and consequences in present practice provide a sound basis for treating the effects of climate change in a rational and optimal manner. It is also clear that there is strong motivation for extensive research as the best action to be taken presently, anticipating appropriate adjustment of re-optimised design methodologies.}, language = {en} } @inproceedings{Kusterle, author = {Kusterle, Wolfgang}, title = {Flexural Creep Tests on Beams : 8 Years of Experience with Steel and Synthetic Fibres}, series = {Creep Behaviour in Cracked Sections of Fibre Reinforced Concrete : Proceedings of the International RILEM Workshop FRC-CREEP 2016}, booktitle = {Creep Behaviour in Cracked Sections of Fibre Reinforced Concrete : Proceedings of the International RILEM Workshop FRC-CREEP 2016}, isbn = {978-94-024-1001-3}, doi = {10.1007/978-94-024-1001-3_3}, pages = {27 -- 39}, abstract = {The creep of cracked fibre reinforced concrete beams has been investigated by many laboratories. Different testing procedures have been used. Creep-test results prove that cracked beams reinforced by fibres show time dependent deformations and therefore increasing crack width with time. Some cannot sustain a high percentage of post-crack load for an extended period and fail due to creep rupture. Determination of the residual strength of FRC according to the Austrian Guideline Fibre Reinforced Concrete was the starting point for the tests. The beams were first tested under four-point flexural loading up to a deflection of 1.75 mm. The beams were then unloaded and three pre-cracked beams were loaded with a sustained load at various percentages of the load reported at 1.75 mm deflection. The used testing procedure, realized and planned improvements are discussed. Typical creep-time curves of FRC are presented. The load level was increased stepwise. Starting point was 50 \% of the residual load at 1.75 mm deflection. At the load level of 60 \%, beams with several fibre types started deforming faster and the test ended up in a creep failure. An alarming fact is that beams with some fibre-types may fail after 7 years of loading.}, language = {en} } @book{Obergriesser, author = {Obergrießer, Mathias}, title = {Digitale Werkzeuge zur integrierten Infrastrukturbauwerksplanung: Am Beispiel des Schienen- und Straßenbaus}, publisher = {Springer Fachmedien}, address = {Wiesbaden}, isbn = {978-3-658-16782-0}, doi = {10.1007/978-3-658-16782-0}, abstract = {Der Autor entwickelt neue digitale Werkzeuge und Methoden, die eine durchg{\"a}ngige und integrierte Planung einer Infrastrukturmaßnahme anhand eines f{\"o}derierten Modells erm{\"o}glichen. Dabei werden verschiedene L{\"o}sungsans{\"a}tze vorgestellt, die eine Erweiterung der traditionellen Planungsprozesse vorsehen. Mathias Obergrießer fasst diese Methoden und digitalen Werkzeuge zu einem leistungsf{\"a}higen Modellierungsleitfaden zusammen, der eine effektive Planung des parametrisch-assoziativen Infrastrukturinformationsmodells erlaubt. Die erfolgreiche Validierung des Leitfadens erfolgt anhand verschiedener Anwendungsbeispiele aus der Praxis. Der Inhalt Einf{\"u}hrung eines modellgest{\"u}tzten Planungsprozesses im Infrastrukturbau Beschreibung geometrischer und parametrisch-assoziativer Modellierungsans{\"a}tze Definition eines infrastruktur-spezifischen Modellierungsleitfadens Konzepte zur Umsetzung des parametrisch-assoziativen Infrastrukturinformationsmodells Die Zielgruppen Dozierende und Studierende des Bauingenieurwesens Praktiker und Praktikerinnen in Ingenieurb{\"u}ros Der Autor Mathias Obergrießer ist seit 2008 an der Hochschule Regensburg als Lehrbeauftragter t{\"a}tig. Seine Forschungsschwerpunkte liegen im Bereich der parametrisch-assoziativen 3D-Infrastrukturinformationsmodellierung sowie in der Integration von geotechnischen Planungsprozessen. Seit 2014 ist er hauptverantwortlicher Tragwerksplaner f{\"u}r Infrastrukturbauwerke im einem deutschen Ingenieurb{\"u}ro.}, language = {de} }