@article{ZanonSeidlRademacher, author = {Zanon, Riccardo and Seidl, G{\"u}nter and Rademacher, Dennis}, title = {New ideas for steel-concrete composite bridges overpassing highways : VFT-RS technology}, series = {ce/papers}, volume = {4}, journal = {ce/papers}, number = {2-4}, publisher = {Ernst \& Sohn}, address = {Berlin}, issn = {2509-7075}, doi = {10.1002/cepa.1292}, pages = {269 -- 278}, abstract = {Roads overpassing highways or speedways are rather a common case, as such bridges occur in average every 2 km of highways in densely populated areas. Due to the high number and similar boundary conditions, the design and realization tends to be standardized and repetitive. The total length ranges mostly between 40 and 55 m, whereas the construction height is a limiting factor since minimumclearance heights must be guaranteed both for safety as well as for driving comfort. Due to these reasons, highway overpasses have been a field of application where steel-framed composite decks have proventheir efficiency for this task. Starting from Germany, the VFT technology (prefabricated composite beam) has spread in several European countries in the last decades as further development of the standard steel-concrete composite solution. Its configuration fits perfectly to integral frame bridges built over existing infrastructure with the scope to minimize the traffic disturbance. In this paper a further step is proposed: the VFT-RS technology. The change consists in using standard rolled sections by adapting them into the integral frame bridge configuration, further enhancing the structural efficiency with the benefits of high-steel strength. The possibility of weathering steel or hot-dip galvanization create the unique offer of a maintenance-free solution.}, subject = {Verbundbr{\"u}cke}, language = {en} } @article{LorencKurzSeidl, author = {Lorenc, Wojciech and Kurz, Wolfgang and Seidl, G{\"u}nter}, title = {Hybrid steel-concrete sections for bridges : definition and basis for design}, series = {Engineering Structures}, volume = {270}, journal = {Engineering Structures}, publisher = {Elsevier}, address = {Amsterdam}, issn = {1873-7323}, doi = {10.1016/j.engstruct.2022.114902}, abstract = {This paper introduces (both formally and technically) a new concept: a hybrid steel-concrete cross section. The definition is based on the shear force transmission mechanism and it assumes the existence of a new type of shear connections, i.e. composite dowels. The hybrid cross-section is a generalization of composite steel-and-reinforced concrete cross sections and it is defined by a new way of dimensioning for vertical shear. The hybrid cross section concept is based on a specific approach to the lever arm of internal forces and an assumption that the local shear transfer mechanism of composite dowels is different than in the case of classic welded studs. The concept makes it possible to show by design calculations that the shear force is transferred through jointly the concrete part and the steel part. It is worth emphasizing that the proposed concept is a response to the new opportunities provided to engineers by composite dowels and to the fact that the bridge structures designed nowadays are different from the ones designed previously. The concept enables the design of completely new types of composite steel-concrete beams. The presented theoretical analyses verified by means of FEM show how the change of the shear connection level influences the division of the shear force in the cross section. This is included in the design concept through the internal lever arm of the hybrid section. The proposed concept has been shown to be internally consistent and complete.}, subject = {Verbundbr{\"u}cke}, language = {en} } @article{LorencSeidlBerthellemy, author = {Lorenc, Wojciech and Seidl, G{\"u}nter and Berthellemy, Jacques}, title = {The evolution of the shape of composite dowels}, series = {Studia geotechnica et mechanica}, volume = {44}, journal = {Studia geotechnica et mechanica}, number = {4}, address = {Wrocław}, organization = {Wrocław University of Science and Technology}, issn = {2083-831X}, doi = {10.2478/sgem-2022-0021}, pages = {296 -- 316}, abstract = {Composite dowels have opened new possibilities for engineers designing composite structures. The fundamental and most important characteristic of composite dowels is the shape of the cutting line. It is important to understand why only one particular shape of the cutting line is used in bridge engineering, while so many different shapes have been investigated by many researchers. The essential part of the process of developing composite dowels - the development of the shape of the cutting line - is presented in this paper. The influence of the steel web thickness is presented, and technological problems of steel fabrication are highlighted. The role of empirical experience from the first bridges, push-out tests, and finite element simulations is presented. Assumptions for numerical procedures are given. The distinction between the steel failure and concrete failure modes is introduced for composite dowels. The paper presents how the concept of "shape" was divided into "shape," "ratio," and finally "size," and how, because of the fatigue problems in bridges, all the three factors have emerged to result in the form of shapes that can satisfy the requirements for bridges. Research leading to the invention of the first version of the clothoidal shape is presented.}, subject = {Verbundd{\"u}bel}, language = {en} } @inproceedings{ZanonRademacherSeidletal., author = {Zanon, Riccardo and Rademacher, Dennis and Seidl, G{\"u}nter and Pak, Daniel}, title = {Integral VFT-RS composite bridges : efficient standard highway overpasses}, series = {IABSE Symposium Prague 2022 : Challenges for Existing and Oncoming Structures}, booktitle = {IABSE Symposium Prague 2022 : Challenges for Existing and Oncoming Structures}, address = {Z{\"u}rich}, organization = {International Association for Bridge and Structural Engineering (IABSE)}, isbn = {978-3-85748-183-3}, doi = {10.2749/prague.2022.1013}, pages = {1013 -- 1020}, abstract = {Starting from Germany, the VFT® bridge girder technology (prefabricated composite beam) has spread in several European countries in the last decades as further development of the standard steel-concrete composite solution. Its configuration fits perfectly to integral frame bridges built over existing infrastructure with the scope to minimize the traffic disturbance. In this paper a further development with the focus on cost efficiency in span ranges of 40-55 m is proposed: the VFT-RS technology. The change consists in using standard rolled sections by adapting them into the integral frame bridge configuration, further enhancing the structural efficiency with the benefits of high- steel strength. The constructive details to achieve the polygonal form have been studied to allow easy fabrication and a maximal clearance height over highway traffic lanes. The VFT-RS solution is conceived as the economic option of standard highway overpasses, with the aim of an overall construction cost reduction of 5\%.}, subject = {Verbundbr{\"u}cke}, language = {en} } @article{PakSeidl, author = {Pak, Daniel and Seidl, G{\"u}nter}, title = {Eine kurze Geschichte der Rahmenbr{\"u}cken in Deutschland}, series = {Stahlbau}, volume = {89}, journal = {Stahlbau}, number = {3}, publisher = {Wiley-Blackwell}, address = {Weinheim}, issn = {1437-1049}, doi = {10.1002/stab.201900110}, pages = {240 -- 249}, abstract = {St{\"a}hlerne Rahmenbr{\"u}cken kommen in Deutschland bereits seit Anfang des letzten Jahrhunderts zum Einsatz. Wurden die ersten st{\"a}hlernen Rahmen noch genietet, konnten Anfang der 1940er-Jahre mit geschweißten, vollwandigen Zweigelenkrahmenbr{\"u}cken bereits Spannweiten bis 50 m realisiert werden. Mit ihrer Schlankheit kamen sie u. a. dann zum Einsatz, wenn gestiegene Anforderungen an die Verkehrslasten einen Ersatzneubau erforderten. Waren die Lagerungsbedingungen von den zun{\"a}chst errichteten Zweigelenkrahmenbr{\"u}cken noch klar definiert, so erforderte der Bau von Br{\"u}cken mit integralen Widerlagern die Entwicklung neuer Ans{\"a}tze zur Ber{\"u}cksichtigung der Boden-Bauwerk-Interaktion. Heute sind Rahmenbr{\"u}cken wegen der großen realisierbaren Spannweite, welche den Mittelpfeiler bei Autobahn{\"u}berf{\"u}hrungen {\"u}berfl{\"u}ssig macht, sowie ihrer geringen Lebenszykluskosten zu einer wirtschaftlichen Alternative geworden. Die hier vorgestellte kurze Geschichte der Rahmenbr{\"u}cken erhebt keinen Anspruch auf Vollst{\"a}ndigkeit, soll jedoch an ausgew{\"a}hlten Beispielen die Entwicklung in den letzten 100 Jahren anschaulich nachzeichnen.}, subject = {Rahmenbr{\"u}cke}, language = {de} } @inproceedings{LorencSeidl, author = {Lorenc, Wojciech and Seidl, G{\"u}nter}, title = {Composite dowels: Steel part of the shear connection. New design guidelines CEN/TS 1994-1-102, experience in the field of manufacturing technology and new structures}, series = {Advances in Steel and Steel-Concrete Composite Structures : Bridging Science and Industry}, booktitle = {Advances in Steel and Steel-Concrete Composite Structures : Bridging Science and Industry}, editor = {Lorenc, Wojciech and Czepiżak, Dariusz and Kozioł, Piotr and Giżejowski, Marian A. and Marcinowski, Jakub and Hotała, Eugeniusz}, edition = {1st Edition}, publisher = {Routledge, Taylor \& Francis}, address = {London}, isbn = {978-1-003-53446-4}, doi = {10.1201/9781003534464-40}, pages = {401 -- 417}, abstract = {Introduced to construction about 20 years ago, the composite dowels shear connection is now used more and more widely in engineering, mostly in bridge construction. During this time, production and construction technologies were refined, design guidelines were developed, and finally a new Technical Specification CEN/TS 1994-1-102 was established. This paper summarizes the experience and design principles related to the steel part of the connection, focusing on the latest achievements in recent years: technology of production, solutions and design approach.}, subject = {Hochbau}, language = {en} } @article{SeidlMariacherSchmidtetal., author = {Seidl, G{\"u}nter and Mariacher, Wolfgang and Schmidt, J{\"u}rgen and Daßler, Mathias}, title = {Br{\"u}cke {\"u}ber die Salzach bei Kaprun}, series = {Stahlbau}, volume = {88}, journal = {Stahlbau}, number = {5}, publisher = {Wiley-Blackwell}, address = {Weinheim}, issn = {1437-1049}, doi = {10.1002/stab.201900021}, pages = {488 -- 498}, abstract = {Im Zuge der Hochwasserschutzmaßnahmen entlang der Salzach wird zur {\"U}berf{\"u}hrung der Straße von Zell am See nach Kaprun in {\"O}sterreich eine neue Br{\"u}cke mit gr{\"o}ßerer St{\"u}tzweite notwendig. Der Ersatzneubau der Br{\"u}cke {\"u}ber die Salzach bei Mayerein{\"o}d ist ein Trogbauwerk in Verbundbauweise, dessen Form funktional entworfen wurde. In Querrichtung werden vorgefertigte π-Platten mit externer Bewehrung gew{\"a}hlt, um eine große Schlankheit und eine schnelle Bauzeit zu erm{\"o}glichen. Die externe Bewehrung wird feuerverzinkt ausgef{\"u}hrt.}, subject = {Br{\"u}cke}, language = {de} } @inproceedings{SeidlSchmittLorenc, author = {Seidl, G{\"u}nter and Schmitt, Victor and Lorenc, Wojciech}, title = {Br{\"u}cken mit Verbundd{\"u}belleisten}, series = {Tagungsband 31. Dresdner Br{\"u}ckenbausymposium}, booktitle = {Tagungsband 31. Dresdner Br{\"u}ckenbausymposium}, address = {Dresden}, organization = {Technische Universit{\"a}t Dresden}, isbn = {978-3-86780-709-8}, issn = {1613-1169}, pages = {27 -- 40}, subject = {Br{\"u}cke}, language = {de} } @article{SahmPreissSeidletal., author = {Sahm, Daniel and Preiß, Tabatha and Seidl, G{\"u}nter and Pak, Daniel}, title = {Transiente Thermografie zur Schadensdetektion aufgeschweißter Bolzen an Schienenst{\"u}tzpunkten}, series = {Bauingenieur}, volume = {100}, journal = {Bauingenieur}, number = {07-08}, publisher = {VDI Fachmedien}, address = {D{\"u}sseldorf}, issn = {0005-6650}, doi = {10.37544/0005-6650-2025-07-08-48}, pages = {214 -- 221}, abstract = {Das ECF-Schienenbefestigungssystem wird bei festen Fahrbahnsystemen aus Stahl eingesetzt, bei denen ein H{\"o}henausgleich durch aufgeschweißte und in Vergussmaterial eingebettete Gewindebolzen erfolgt. Unter außerplanm{\"a}ßig hoher Beanspruchung k{\"o}nnen Teilabrisse oder Komplettabrisse dieser Bolzen auftreten. Zur Erkennung eines Abrisses unter laufendem Verkehr bedarf es einer robusten Pr{\"u}fmethode. Im Rahmen der vorliegenden Untersuchung wurde eine sensorbasierte, transiente Thermografie zur kontinuierlichen {\"U}berwachung der Aufschweißbolzen entwickelt und bewertet. Die Methode basiert auf der gezielten Erw{\"a}rmung des Bolzenkopfes durch eine Heizpatrone und der Erfassung der resultierenden W{\"a}rmeausbreitung in der Grundplatte. Durch schrittweises Einschneiden der Bolzen konnten charakteristische Temperaturgradienten erzeugt werden, die eine differenzierte Identifikation von Teilabrissen und Abl{\"o}sungen erm{\"o}glichen. Die methodische Einfachheit, Robustheit und Kosteneffizienz der eingesetzten Sensorik pr{\"a}destinieren die Methode f{\"u}r diesen Anwendungsfall, weshalb sie auch aktuell an einer Eisenbahn{\"u}berf{\"u}hrung eingesetzt wird.}, subject = {Bolzen}, language = {de} } @article{ZanonRademacherSeidletal., author = {Zanon, Riccardo and Rademacher, Dennis and Seidl, G{\"u}nter and Pak, Daniel}, title = {Integral bridge with RS-Overpass technology : step into the future of standard highway overpasses}, series = {ce/papers}, volume = {6}, journal = {ce/papers}, number = {1}, publisher = {Ernst \& Sohn}, address = {Berlin}, issn = {2509-7075}, doi = {10.1002/cepa.1928}, pages = {459 -- 470}, abstract = {Starting from Germany, the VFT bridge girder technology (prefabricated composite beam) has spread in several European countries in the last decades as further development of the standard steel-concrete composite solution. Its configuration fits perfectly to integral frame bridges built over existing infrastructure with the scope to minimize the traffic disturbance. In this paper a further development with the focus on cost efficiency in span ranges of 40-55 m is proposed: the RS-Overpass technology. The change consists in using standard rolled sections by adapting them into the integral frame bridge configuration, further enhancing the structural efficiency with the benefits of high-steel strength. The constructive details to achieve the polygonal form have been studied to allow easy fabrication and a maximal clearance height over highway traffic lanes. The RS-Overpass solution is conceived as the economic option of standard highway overpasses, with the aim of a overall construction cost reduction of 5\%. The possibility of weathering steel or hot-dip galvanization create the unique offer for a maintenance-free solution.}, subject = {Verbundbr{\"u}cke}, language = {en} } @article{SchmittBraunLechneretal., author = {Schmitt, Victor and Braun, Anton and Lechner, Thomas and Seidl, G{\"u}nter}, title = {Entwicklung von Bauweisen im Br{\"u}ckenbau}, series = {Br{\"u}ckenbau : Construction \& Engineering}, journal = {Br{\"u}ckenbau : Construction \& Engineering}, number = {1-2}, publisher = {Wiederspahn}, address = {Wiesbaden}, issn = {1867-643X}, pages = {6 -- 15}, abstract = {In vielen L{\"a}ndern mit hochbelasteten Verkehrsinfrastrukturen ist Bauen mit vorgefertigten Modulen anerkannter Stand der Technik und wird stetig eingesetzt. In der Regel sind es {\"U}berbauten mit einem einzelligen Stahlbetonhohlkasten, die, in Segmente aufgeteiltm vor Ort meist im Freivorbau zusammengef{\"u}gt und mit externen Spanngliedern zusammengespannt werden. Modulbauweisen im Verbundbau sind die Ausnahme, bieten aber gegen{\"u}ber dem Spannbeton in der Herstellung, beim Transport und der Montage erhebliche Vorteile, da die Fahrbahnsegmente auf die L{\"a}ngstr{\"a}ger einfach aufgelegt werden k{\"o}nnen. Mit der vorstellten VSM-Bauweise k{\"o}nnen robuste {\"U}berbauten vin Ein- und Mehrfeldbauwerken in k{\"u}rzester Bauzeit mit geringster Verkehrbehinderung wirtschaftlich realisiert werden.}, subject = {Bauweise}, language = {de} } @article{SeidlRademacherZanonetal., author = {Seidl, G{\"u}nter and Rademacher, Dennis and Zanon, Riccardo and Yu, Chao}, title = {Weitgespannte Rahmenbr{\"u}cken mit Walztr{\"a}gern in Verbundbauweise}, series = {Br{\"u}ckenbau : Construction \& Engineering}, journal = {Br{\"u}ckenbau : Construction \& Engineering}, number = {1-2}, publisher = {Wiederspahn}, address = {Wiesbaden}, issn = {1867-643X}, pages = {126 -- 135}, abstract = {Rahmenbr{\"u}cken in Verbundbauweise werden mit Spannweiten von {\"u}ber 60 m ausgef{\"u}hrt. Bisher wurde der Spannweitenbereich {\"u}ber 40 m aus VFT-Tr{\"a}gern mit geschweißten Tr{\"a}gern realisiert. Walztr{\"a}ger der G{\"u}te S460M sind in diesem Spannweitenbereich eine gestalterisch gute Alternative, bergen ein großes Einsparpotenzial im Konstruktionsstahl und bieten eine hohe Flexibilit{\"a}t in Hinblick auf die Schlankheit. Durch die großen Steg- und Flanschdicken sind dei VFT-Tr{\"a}ger sehr robust. Der Aufsatz beschreibt die Konstruktion und beleuchtet wirtschaftliche und gestalterische Aspekte von VFT-Tr{\"a}gern aus Walztr{\"a}gern.}, subject = {Rahmenbr{\"u}cke}, language = {de} } @article{ZimmermannHoeregottSeidletal., author = {Zimmermann, Theresa and H{\"o}regott, Andreas and Seidl, G{\"u}nter and Ritlewski, Thomas}, title = {Pilotversuch - Pr{\"a}zisionsstahlh{\"o}cker statt Unterguss}, series = {Der Eisenbahningenieur}, journal = {Der Eisenbahningenieur}, number = {3}, publisher = {DVV Media Group GmbH}, address = {Hamburg}, issn = {0013-2810}, pages = {25 -- 29}, abstract = {Aufgrund von starken Belastungen durch den Zugverkehr mussten auf einer Eisenbahn{\"u}berf{\"u}hrung (E{\"U}) mit schwierigen betrieblichen und gleisgeometrischen Rahmenbedingungen Schienenst{\"u}tzpunkte (SSP) saniert werden. Die urspr{\"u}nglich mit dem elastischen Schienenbefestigungssystem ECF (Elastic Clip Fastener) versehenen SSP, welche in den {\"U}berh{\"o}hungsbereichen mit einem Polymerbeton untergossen sind, wurden durch die Kombination eines von thyssenkrupp speziell entwickelten Pr{\"a}zisionsstahlh{\"o}ckers (PSH) mit dem Schienenbefestigungssystem ECF ersetzt. In einem Pilotversuch konnten Erkenntnisse {\"u}ber die Wirksamkeit des neuen Systems ermittelt werden.}, subject = {Eisenbahnbau}, language = {de} } @article{SeidlMarlacherSchmidt, author = {Seidl, G{\"u}nter and Marlacher, Wolfgang and Schmidt, J{\"u}rgen}, title = {Br{\"u}cke {\"u}ber die Salzach bei Kaprun}, series = {Br{\"u}ckenbau : Construction \& Engineering}, journal = {Br{\"u}ckenbau : Construction \& Engineering}, number = {1-2}, publisher = {Wiederspahn}, address = {Wiesbaden}, issn = {1867-643X}, pages = {144 -- 153}, abstract = {Im Zuge der Hochwasserschutzmaßnahmen entlang der Salzach wird f{\"u}r die {\"U}berf{\"u}hrung der Straße von Zell am See nach Kaprun eine neue Br{\"u}cke mit gr{\"o}ßerer St{\"u}tzweite notwendig. Der Ersatzneubau dieser Br{\"u}cke {\"u}ber die Salzach ist ein Trogbauwerk in Verbundbauweise. In Querrichtung werden π-Platten mit externer Bewehrung gew{\"a}hlt, um eine große Schlankheit und eine schnelle Bauzeit zu erm{\"o}glichen. Die externe Bewehrung der Platten wird feuerverzinkt ausgef{\"u}hrt.}, subject = {Trogbr{\"u}cke}, language = {de} } @article{LorencSeidl, author = {Lorenc, Wojciech and Seidl, G{\"u}nter}, title = {Composite dowels for bridges : trends and challenges for new european design rules}, series = {ce/papers}, volume = {6}, journal = {ce/papers}, number = {1}, publisher = {Ernst \& Sohn}, address = {Berlin}, issn = {2509-7075}, doi = {10.1002/cepa.1897}, pages = {118 -- 129}, abstract = {The introduction of composite dowels (CDs) in Europe at the beginning of the last decade led to the creation of new forms of composite bridges in which a T-profile is used instead of an I-beam. Both the construction and design methods are new [4]. Experiences from the construction of new bridges and discussion between the authors lead to new significant conclusions, which should be included in the new European approval (CEN-TS). The problem of design formulas for concrete dowels is presented.}, subject = {Verbundd{\"u}bel}, language = {en} }