Effect of steel diaphragms on girder performance of simply supported T-girder bridges with wide girder spacing
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Bibliographic Details
| Author(s): |
Chang Liu
(Department of Bridge Engineering, Tongji University, Shanghai, China.)
Xiangyong Duanmu (Department of Bridge Engineering, Tongji University, Shanghai, China.) Chengxu Yu (Department of Bridge Engineering, Tongji University, Shanghai, China.) Dong Xu (Department of Bridge Engineering, Tongji University, Shanghai, China.) Tijun Qiu (Anhui Transport Consulting & Design Institute Co., Ltd. , Hefei, 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): | 522-530 | ||||
| Total no. of pages: | 9 | ||||
| DOI: | 10.2749/nanjing.2022.0522 | ||||
| Abstract: |
A promising system for accelerated bridge construction is the simply supported T-girder bridge with wide girder spacing and steel diaphragms. However, the influence of steel diaphragms on this system is unclear. A space grillage model was presented to conduct a parametric study. Three forms of the number of steel diaphragms were considered: with three diaphragms, with two end diaphragms only, and without diaphragm. It is found that the reduction of the number of steel diaphragms reduces the stresses of girders under dead load; under eccentric vehicle load, the removal of steel diaphragms changes the load transfer coefficient and leads to uneven load distribution. However, under load combination conditions, the removal of steel diaphragms has a modest positive effect of reducing stress and deflection envelop values for girders and can bring the most adverse situation of each girder closer. |
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| Keywords: |
diaphragm assembled T-girder bridge space grillage model main girder performance
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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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