A New Method for Calculating the Shear Stiffness of RC Beams with Web Diagonal Cracks
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Bibliographic Details
| Author(s): |
Wei Dou
(Anhui Transport Consulting & Design Institute Co., Ltd., Hefei, Anhui, China; Transportation Energy Conservation and Environmental Protection Technology Transportation Research & Development Center, Hefei, Anhui, China)
Shengbin Wang (Anhui Transport Consulting & Design Institute Co., Ltd., Hefei, Anhui, China) Yongxue Jin (Tongji University, Shanghai, China) Dong Xu (Tongji University, Shanghai, China) |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Symposium: Construction’s Role for a World in Emergency, Manchester, United Kingdom, 10-14 April 2024 | ||||
| Published in: | IABSE Symposium Manchester 2024 | ||||
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| Page(s): | 581-586 | ||||
| Total no. of pages: | 6 | ||||
| DOI: | 10.2749/manchester.2024.0581 | ||||
| Abstract: |
Investigation shows that long span concrete box girder bridges often suffer from cracking and deflection diseases simultaneously. A considerable number of the cracks are diagonal web cracks, which reflects the reduction of the shear stiffness of the structure. However, the current specifications only consider the adverse effects caused by flexural cracks and ignore the shear deflection. In addition, some scholars have found that the horizontal reinforcement of the web also limits the development of diagonal cracks. This paper carried out shear tests on I-shaped beams with different forms of reinforcement in the web. Then, a new calculation method is proposed to calculate the shear stiffness after diagonal cracking, which takes into account the influence of the vertical and horizontal reinforcement at the same time. |
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| Keywords: |
shear stiffness truss model diagonal crack stirrup horizontal reinforcement
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