白沙洲长江大桥不同主梁纵向约束方式及其对结构抗震性能的影响

Analysis of different longitudinal restraint conditions in main girder and their effects on the seismic behavior of Wuhan White Shoal Yangtz River Bridge

以武汉白沙洲长江大桥这座主跨６１８ ｍ 斜拉桥为例，考虑索、塔和主梁的非线性效应，用大位移理论研究了大跨度斜拉桥这种长大柔性结构物在地震作用下的动力行为，讨论了不同主梁纵向约束方式对斜拉桥地震响应的影响。

Based on the large deformation theory, considering the nonlinear effect of cable, tower and main girder, the dynamic behavior of a long span cable stayed bridge, Wuhan White Shoal Yangtz River Bridge subjected to seismic excitations is systematically investigated. The effects of different longitudinal restraint conditions in the main girder on the seismic performance of this bridge is discussed.