半刚性端板连接多层钢框架的Push-over分析  

Push-over Analysis of Multistory Steel Frame with Semirigid End-plate Conections

作　　者：王元清[1] 张一舟[2] 施刚[1] 石永久[1] 舒兴平[3] 

机构地区：[1]清华大学土木工程系,清华大学结构工程与振动教育部重点实验室,北京100084 [2]中冶京诚工程技术有限公司,北京100176 [3]湖南大学土木工程学院,湖南长沙410082

出　　处：《湖南大学学报（自然科学版）》2009年第11期10-15,共6页Journal of Hunan University:Natural Sciences

基　　金：国家自然科学基金资助项目(50578083);清华大学基础研究基金资助项目(JCqn2005006)

摘　　要：由于缺乏计算理论和方法,大多数半刚性节点按刚性节点进行设计,对结构的静力分析、抗震性能等各方面的设计计算的影响很大.本文采用有限元分析方法,将半刚性连接节点视为弹簧单元,通过通用有限元软件Sap2000对一个半刚性端板连接的多层钢框架建立有限元模型并进行了模态分析、反应谱分析和Push-over(静力弹塑性)分析.结果表明,采用了半刚性端板连接的钢框架结构,相对于理想刚接的情况,结构在多遇和罕遇地震作用下结构的抗震性能明显变化.Because of the absence of calculation theory and design method for semirigid connection, it is still calculated and designed as rigid connection in our country, which leads to significant differences between the calculation result and the real stressed state. In this paper, an FEM model of a multistory steel frame with semirigid end-plate connections was set up with Sap2000, and modal analysis, spectrum analysis and pushover analysis on the model were calculated. The dynamic properties of the steel frame with semirigid end-plate connections were discussed, and the influence of semirigid connections on the multistory steel frames design was studied. The results have shown that the steel frames with semirigid connections are different from that with rigid connections. The flexibility of the connections affects the behavior of the frames, and their influences can not be ignored in the design and analysis of steel frames.

关 键 词：半刚性 端板连接 多层钢框架 Push—over分析 

分 类 号：TU392[建筑科学—结构工程]