关键词: 吊桥, 索结构, 无应力初始状态, 几何非线性, 有限元法

Abstract: In order to evaluate the carrying capacity of one flexible suspension bridge, the authors measured its shape under no load and took a static test under traffic load. Non-linear FEM was used to model the behavior of the structure. It was focused on the method to determine the non-strain state of structure using the measured results. The consistenly of simulated results with the test confirms the correctness of themethod. The method, proposed in this paper to determine the non-strain state of structure, can be used to design and analysis large-span cable structures.

Key words: suspension bridge, cable structure, non-strain state, geometry non-linear, FEM