半刚接钢框架地震响应的有限元程序分析  

Analysis of elastic seismic responses of semi-rigidly connected steel frames

作　　者：完海鹰[1,2] 王建国[2] 王秀喜[1] 

机构地区：[1]中国科学技术大学近代力学系,安徽合肥230026 [2]合肥工业大学土木与水利工程学院,安徽合肥230009

出　　处：《合肥工业大学学报（自然科学版）》2009年第9期1409-1413,共5页Journal of Hefei University of Technology：Natural Science

基　　金：安徽省自然科学基金资助项目(070414175)

摘　　要：文章采用有限元分析方法,将半刚性连接节点理想化为弹簧单元,采用Newmark数值积分算法,运用Matlab软件对半刚性连接平面钢框架结构编制了弹性时程分析程序,研究节点刚度对多层钢框架和支撑钢框架结构抗震性能的影响。结果表明,半刚性连接对多层钢框架结构动力性能影响比支撑钢框架结构大。Because of the absence of calculation theory and design methods for the semi-rigid connection model of steel frame joints,the majority of the joints are designed as rigid connection, which leads to the significant difference between the calculation result and the real stressed state of the joints. Using the method of finite element analysis, the semi-rigid connection is dealt with as a spring element, and a corresponding computer program is developed with Matlab to calculate and analyze the elastic time- history response of semi-rigidly connected steel frames. The influence of the connection＇s rigidness on the dynamic properties of the steel frames and braced steel frames is discussed. The obtained results show that connection＇s rigidness plays a more important role in steel frames than braced frames.

关 键 词：半刚性 多层钢框架 多层支撑钢框架 弹性时程分析 

分 类 号：TU391[建筑科学—结构工程]