作　　者： ; ; ;

机构地区： 华南理工大学建筑学院

出　　处： 《科学技术与工程》 2007年第10期2288-2291,共4页

摘　　要： 讨论了斜拉桥的地震动力分析方法,包括三维斜拉桥线性地震分析的多点激励地震输入问题。对两典型跨径斜拉桥进行了一致激励和多点激励情况的比较分析。结果表明:多点激励对于长大跨径斜拉桥地震响应有很大影响,在进行地震响应分析必须予以考虑。 The dynamic time-history analysis methodology is discussed, including the multiple-support seismic input problem for the three-dimensional linear earthquake-response analysis of cable-stayed bridges. And a comparative study is made between the response of the models under uniform earthquake and their response to multiple-support excitations. Analysis results show that multiple- support seismic excitations can have a significant effect and should be considered in the earthquake- response analysis of such long and complex three-dimensional structures.

关 键 词： 地震反应分析 斜拉桥 一致激励 多点激励

领　　域： [建筑科学] [交通运输工程]