Abstract
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 fullscale 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.
| Original language | English |
|---|---|
| Title of host publication | IABSE Symposium Prague, 2022 |
| Subtitle of host publication | Challenges for Existing and Oncoming Structures - Report |
| Publisher | International Association for Bridge and Structural Engineering (IABSE) |
| Number of pages | 10 |
| ISBN (Electronic) | 9783857481833 |
| Publication status | Published - 2022 |
| Event | IABSE Symposium Prague 2022: Challenges for Existing and Oncoming Structures - Prague, Czech Republic Duration: 25 May 2022 → 27 May 2022 |
Conference
| Conference | IABSE Symposium Prague 2022: Challenges for Existing and Oncoming Structures |
|---|---|
| Country/Territory | Czech Republic |
| City | Prague |
| Period | 25/05/22 → 27/05/22 |
Bibliographical note
Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Keywords
- composite deck
- anchors
- fatigue behaviour
- short-headed studs
- S-N curves