连续模态Pushover分析法在钢交错桁架结构中的应用及改进  

Application and Improvement of the Consecutive Modal Pushover Procedure to Steel Staggered Truss

作　　者：李晓娟[1] 顾强[2] 

机构地区：[1]河海大学土木工程学院,南京210098 [2]苏州科技学院土木工程系,苏州215011

出　　处：《世界科技研究与发展》2009年第6期1134-1135,1168,共3页World Sci-Tech R&D

基　　金：国家自然科学基金项目(No.50578099)

摘　　要：连续模态Pushover分析(Consecutive Modal Pushover,简称CMP)是一种能够考虑结构高阶振型的Pushover分析方法。为研究该法是否适用于铜交错桁架结构的抗震性能评估,分别对10层、15层和20层钢交错桁架结构体系进行CMP分析和非线性时程分析,并通过比较由CMP分析和非线性时程分析所得结构的反应,对CMP分析法提出相应的改进方案。分析结果表明,改进后的CMP分析法对于钢交错桁架结构的抗震性能评估是一种行之有效的方法。The consecutive modal pushover（CMP） is a new pushover procedure which can take into account higher-mode effects. The present study aims at validating CMP for the seisnfic performance evaluation of steel staggered truss through comparison with nonlinear response histo- ry analysis of 10,15 and 20 storey steel staggered truss. And an improved CMP procedure has been put forward. It is demonstrated that the improved CMP procedure is able to accurately predict the seismic demands of steel staggered truss.

关 键 词：钢交错桁架结构 CMP分析 非线性时程分析 

分 类 号：TU391[建筑科学—结构工程]