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考虑土-结构相互作用的LRB隔震梁桥体系地震反应分析法

Keywords: 隔震桥梁,土结相互作用,地震反应,铅芯橡胶支座,双向地震

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Abstract:

为了研究在双向地震激励下,考虑土一结构相互作用的LRB隔震梁桥结构体系的反应特性以及不同类型土对其隔震梁桥地震反应峰值的影响.采用集中参数法,给出了双向水平地震激励下考虑SSI的一种时域计算分析隔震桥梁地震反应的方法.并在考虑和忽略SSI时,对一座三跨连续LRB隔震梁桥的地震反应峰值的影响进行了比较分析,结果证实,土-结构相互作用对LRB隔震梁桥结构地震反应与场面类别、断层以及地震动选择等关系密切.

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