Punching behavior of a novel steel-UHPFRC composite bridge deck slab
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Bibliographic Details
| Author(s): |
Xiujiang Shen
(College of Civil Engineering, Hunan University, Changsha 410082, China)
Xudong Shao (College of Civil Engineering, Hunan University, Changsha 410082, China) Jingyu Lu (College of Civil Engineering, Hunan University, Changsha 410082, China) Junhui Cao (College of Civil Engineering, Hunan University, Changsha 410082, China) Yang Wang (College of Civil Engineering, Hunan University, Changsha 410082, China) |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Congress: Bridges and Structures: Connection, Integration and Harmonisation, Nanjing, People's Republic of China, 21-23 September 2022 | ||||
| Published in: | IABSE Congress Nanjing 2022 | ||||
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| Page(s): | 396-403 | ||||
| Total no. of pages: | 8 | ||||
| DOI: | 10.2749/nanjing.2022.0396 | ||||
| Abstract: |
A novel steel-UHPFRC composite deck system, consisting of upper thin reinforced UHPFRC slab, hot rolled sections as longitudinal ribs, and steel strips as transversal reinforcement, is proposed originally in this paper. Considered as more economic and sustainable structure, the new composite deck is a promising alternative to traditional orthotropic steel deck (OSD) in long-span bridge. In this context, due to the relatively thin UHPFRC layer, the punching behavior of new composite deck becomes one of the dominant issues, which determines the spacing of steel trips. Hence, this paper presents the results of punching tests on 12 new composite deck slabs with various spacing of steel strips. All slabs failed in punching-flexure mode with a clearly delimited punching cone and significant flexural cracks on tensile surface. Moreover, the presence of steel strips can increase the punching shear resistance and flatten the inclination of critical shear cracks. |
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| Keywords: |
composite bridge deck punching shear UHPFRC long-span bridge DIC steel strip critical shear crack punching cone
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| Copyright: | © 2022 International Association for Bridge and Structural Engineering (IABSE) | ||||
| License: | This creative work is copyrighted material and may not be used without explicit approval by the author and/or copyright owner. |
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