Collapse Causes Analysis and Numerical Simulation for a Rigid Frame Multiple Arch Bridge

[摘要] Following the collapse accident of Baihe Bridge, the author built a plane model of the whole bridge firstly and analyzed the carrying capacity of the structure for a 170-tons lorry load. Then the author built a spatial finite element model which can accurately simulate the bridge collapse course. The collapse course was simulated and the accident scene was reproduced. Spatial analysis showed rotational stiffness of the pier bottom had a large influence on the collapse from of the superstructures. The conclusion was that the170 tons lorry load and multiple arch bridge design were the important factors leading to collapse.

[发布机构] Research Institution of Highway, Ministry of Transportation, China^1

[效力级别] 材料科学

[关键词] Accident scene;Bridge collapse;Bridge design;Causes analysis;Rigid frame;Rotational stiffness;Spatial analysis;Spatial finite element models