Direct Shear: A Mechanism that is Often Ignored and Rarely Studied
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Bibliographic Details
| Author(s): |
Dong Xu
(Department of Bridge Engineering, Tongji University, 1239Siping Road, Shanghai, China)
Yongxue Jin (Department of Bridge Engineering, Tongji University, 1239Siping Road, Shanghai, China) Huifen Liu (Department of Bridge Engineering, Tongji University, 1239Siping Road, Shanghai, 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): | 1723-1729 | ||||
| Total no. of pages: | 7 | ||||
| DOI: | 10.2749/nanjing.2022.1723 | ||||
| Abstract: |
The defect of excessive lone time deflection of prestressed concrete bridges has been researching for decades. Many researches focused on reducing the long time dead-load deflection of the completed bridge. Another research method is trial calculation, which includes adjusting prestress loss, structural stiffness, or modifying the creep model to fit the deflection changes of the real bridge. Nevertheless, there is still a lack of recognized solution. In this paper, with the continuous research on the excessive long time deflection of PC girder bridges in the Department of Bridge Engineering at Tongji University, another kind of shear caused excessive defection is proposed, which is also a mechanism that is often ignored and rarely studied: direct shear. The transverse analysis method of the box section and its influence on longitudinal direct shear are presented in detail. Finally, some research and design suggestions are put forward. |
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| Keywords: |
concrete bridge direct shear excessive deflection stress indicator of box section transverse analysis of box section
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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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