Behavior of Orthotropic Steel-UHPC Composite Bridge Deck under Cyclic Loading
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Détails bibliographiques
| Auteur(s): |
Zhanchong Shi
(Department of Bridge Engineering, Tongji University, Shanghai, China; Department of Engineering Structures, Delft University of Technology, Delft, The Netherlands)
Qingtian Su (Department of Bridge Engineering, Tongji University, Shanghai, China) Milan Veljković (Department of Engineering Structures, Delft University of Technology, Delft, The Netherlands m.veljkovic@tudelft.nl) |
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| Médium: | papier de conférence | ||||
| Langue(s): | anglais | ||||
| Conférence: | IABSE Symposium: Challenges for Existing and Oncoming Structures, Prague, Czech Republic, 25-27 May 2022 | ||||
| Publié dans: | IABSE Symposium Prague 2022 | ||||
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| Page(s): | 810-819 | ||||
| Nombre total de pages (du PDF): | 10 | ||||
| DOI: | 10.2749/prague.2022.0810 | ||||
| Abstrait: |
In recent years, ultra-high performance concrete (UHPC) has been introduced in the design of orthotropic steel decks (OSD) to reduce the risk of fatigue cracking. To investigate the fatigue behaviour and fatigue damage process of the orthotropic steel-UHPC composite bridge deck, a full- scale specimen was designed and tested under cyclic loading. Test results show that the fatigue resistance of orthotropic steel-UHPC composite bridge deck satisfies the requirements of the designed vehicle load up to 2 million cycles with no cracks occurred in this phase. Rib-to-crossbeam weld and U-rib butt-welded connection are the two most vulnerable details to crack in OSD under cyclic loading. The fatigue resistance of U-rib bolted connection was investigated, and it is concluded that it performs better than that of U-rib butt-welded connection. The short-headed studs fractured under excessive cyclic loading and 5 types of the fatigue failure modes are identified. And the UHPC layer above the crossbeam exhibited limited number of cracks with the maximum crack width less than 0.05mm at the end of the cyclic, much beyond the requirements. |
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| Mots-clé: |
mouillages
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| Copyright: | © 2022 International Association for Bridge and Structural Engineering (IABSE) | ||||
| License: | Cette oeuvre ne peut être utilisée sans la permission de l'auteur ou détenteur des droits. |
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