刚性斜撑对冷弯薄壁型钢结构住宅体系抗震性能的影响研究  

RESEARCH ON SEISMIC BEHAVIOR OF COLD-FORMED THIN-WALLED STEEL RESIDENTIAL STRUCTURES WITH DIFFERENT RIGID BRACINGS

作　　者：王春刚[1] 李宁[1] 张壮南[1] 

机构地区：[1]沈阳建筑大学土木工程学院,沈阳110168

出　　处：《钢结构》2017年第12期45-51,共7页Steel Construction

基　　金：辽宁省自然科学基金项目(201602636);沈阳市科技计划项目(F16-205-1-14);沈阳建筑大学学科涵育项目(XKHY2-12)

摘　　要：为研究刚性斜撑对冷弯薄壁型钢结构住宅体系抗震性能的影响,基于SAP 2000软件多线段塑性Pivot连接单元,建立3层冷弯薄壁型钢整体结构简化分析模型,并验证模型的有效性,其中组合墙体的恢复力特性由ABAQUS有限元软件模拟获得。采用El Centro波,对整体结构模型进行时程分析,考虑了8种不同墙体斜撑的布置方式。对比分析了各模型在7~9度多遇地震及7、8度罕遇地震作用下的加速度时程曲线、位移时程曲线、层间位移及层间位移角。结果表明:在墙体内布置斜撑能显著提升整体结构的抗震性能,其中以WSO-K3斜撑布置方案提升的幅度最大。In order to study the effect of rigid diagonal bracing on the seismic behavior of cold-formed thin-walled steel residential structures,based on multilinear plastic Pivot connection element of SAP 2000,the simplified analysis models of 3 story cold-formed thin-walled steel structures were established and the validity of the model was verified. The restoring force characteristics of composite wall were obtained by ABAQUS finite element software simulation. Considering the arrangement of 8 kinds of wall bracing,the time history analysis of the model was carried out by using El Centro wave. The time history curves,displacement time history curves,inter story displacements and inter story displacement angles of each model were compared and analyzed in the case of 7 ~ 9 degree earthquakes and 7 ~ 8 degree rare earthquakes. The arrangement of the bracing in the wall could significantly improve the seismic behavior of the structure,and the WSO-K3 brace arrangement was the best.

关 键 词：冷弯薄壁型钢 刚性斜撑 抗震性能 时程分析 简化分析 

分 类 号：TU352.11[建筑科学—结构工程] TU392.1