钢桁架-混凝土组合剪力墙与钢连梁连接节点的抗震性能分析  

Seismic Response of the Joint Between Steel Truss Concrete Composite Shear Wall and Steel Coupling Beam

作　　者：王卫永[1] 杨启波 梁展硕 欧应 姜先春 WANG Weiyong;YANG Qibo;LIANG Zhanshuo;OU Ying;JIANG Xianchun(School of Civil Engineering,Chongqing University,Chongqing 400045,China;Department of Civil Engineering,Tsinghua University,Beijing 100084,China;Chongqing Yifu Zhugong Science and Technology Co.,Ltd.,Chongqing 400084,China)

机构地区：[1]重庆大学土木工程学院,重庆400045 [2]清华大学土木工程系,北京100084 [3]重庆宜府住工科技有限公司,重庆400084

出　　处：《工业建筑》2022年第11期39-48,共10页Industrial Construction

基　　金：重庆英才包干制项目(cstc2021ycjh-bgxm0009);国家自然科学基金项目(51878096)。

摘　　要：型钢混凝土剪力墙具有抗震性能好、便于装配化的优点,该墙体和钢连梁连接节点的抗震性能严重影响结构体系的安全。采用ABAQUS有限元软件建立精细化模型,分析了以剪切塑性变形为主的节点和以弯曲塑性变形为主的节点的抗震性能。通过低周往复加载,观察节点的破坏形态,并对节点的滞回性能、骨架曲线、刚度退化曲线、等效黏滞阻尼系数以及位移延性系数等进行分析,探明了节点处腋梁、侧肋板、墙体斜撑及翼缘削弱等对节点抗震性能的影响。研究表明:节点处设置腋梁或侧肋板可提高节点初始刚度及承载力,并使塑性铰外移,减小边柱变形,实现“强节点”的抗震需求,但增加侧肋板将降低节点的延性;翼缘削弱将降低节点初始刚度及承载力,但对刚度退化影响较小;翼缘削弱后增设腋梁、侧肋板和斜撑对节点滞回曲线和骨架曲线影响较小。Steel reinforced concrete shear wall has the advantages of good seismic performance and easy assembly. The seismic performance of the joint between the wall and steel coupling beam seriously affects the safety of the structural system. In order to investigate the seismic performance of different types of joints, ABAQUS finite element software was used to establish a refined model to analyze the seismic performance of shear plastic deformation dominated joints and bending plastic deformation dominated joints. Through quasi-static loading, the failure mode of the joint was observed, and the parameters such as hysteretic performance, skeleton curve, stiffness degradation curve, equivalent viscous damping coefficient and displacement ductility coefficient of the joint were analyzed. The influence of axillary beam, side rib plate, diagonal brace and flange weakening on the seismic performance of the joint was investigated. The research showed that increasing the axil beam or side rib plate could improve the initial stiffness and bearing capacity of the joint, move the plastic hinge outward, reduce the deformation of the side column, and realize the seismic demand of “strong joint”, but increasing the side rib plate would reduce the ductility of the joint. The weakening of the flange would reduce the initial stiffness and bearing capacity of the joint, but had little effect on the stiffness degradation. The addition of axillary beam, side rib and diagonal brace at the joint had little effect on the hysteretic curve and skeleton curve after flange weakening.

关 键 词：组合剪力墙 钢连梁 节点 抗震性能 有限元分析 

分 类 号：TU352.11[建筑科学—结构工程] TU398.9