上海虹桥搜候(SOHO)水平地震行波效应时程分析  

Time-history analysis of horizontal seismic traveling wave excitation for Hongqiao SOHO project in Shanghai

作　　者：李瑞雄[1] 姜琦 李亚明[1] 贾水钟[1] 

机构地区：[1]上海建筑设计研究院有限公司上海建筑空间结构工程技术研究中心,上海200041 [2]上海市建筑科学研究院(集团)有限公司上海市工程结构安全重点实验室,上海200032

出　　处：《建筑结构》2018年第4期17-20,16,共5页Building Structure

摘　　要：地震波的传播是随时间和空间的不同而变化的,对于超长结构,地震行波效应的影响不能忽略。采用MIDAS/Gen对上海虹桥搜候（SOHO）超长结构进行地震时程分析,分别采用一致输入和行波输入,比较分析不同波速对结构的影响,分析研究地震行波效应下结构端部和中部梁柱内力、楼层位移特征,并与一致激励下的地震反应进行比较分析,得到行波效应对超长结构端部及底部楼层构件内力影响明显,构件轴力最大可增大2倍以上。The seismic wave dissemination changes along with different time and space,so seismic traveling-wave effect should not be ignored for super-long structure. The general finite element software MIDAS/Gen was applied to analyze timehistory responses for super-long structure of Hongqiao SOHO project in Shanghai under the uniform excitation input and traveling-wave excitation input to compare the influences of different traveling speeds on the structure. The characteristics of the internal force and displacement of the beams and the columns that locate in the middle and end of the structure were researched under seismic traveling-wave effect,and the results were compared with the seismic responses under the uniform excitation. It is concluded that travelling-wave effect has obvious effect on the internal forces of components that locate at end of super-long structure and bottom story,and axial forces of components can increase more than 2 times than origin.

关 键 词：上海虹桥搜候(SOHO) 超长结构 水平地震 一致激励 行波效应 时程分析 

分 类 号：TU398.7[建筑科学—结构工程]