钢连梁与钢-混凝土组合剪力墙连接抗震性能研究  

Experimental study on steel coupling beam and composite shear wall connection under simulated earthquake action

作　　者：伍云天[1] 周忠亮[2] 肖岩[3,4] 杨伟[2] 

机构地区：[1]重庆大学山地城镇建设与新技术教育部重点实验室,重庆400045 [2]重庆大学土木工程学院,重庆400045 [3]南京工业大学土木工程学院,江苏南京211816 [4]南加州大学土木与环境工程系,加利福尼亚洛杉矶ca90089

出　　处：《建筑结构学报》2015年第9期9-17,52,共10页Journal of Building Structures

基　　金：国家自然科学基金项目(51108484);中央高校基本科研业务费项目(CDJZR12205503)

摘　　要：为了考察钢连梁与钢-混凝土组合剪力墙肢端板螺栓连接的抗震性能,考虑不同的连梁跨度和组合墙轴压比,设计并制作了4个1/4缩尺钢连梁与钢-混凝土组合剪力墙连接试件,在保持组合墙体恒定轴压力的情况下,对钢连梁施加竖向往复荷载,比较了试件的受力发展过程和最终破坏形态,分析了试件荷载-位移滞回性能、延性、耗能以及刚度退化等受力特征。结果表明:端板螺栓连接形式能够满足钢连梁与组合剪力墙连接区域的承载力、变形与耗能能力需求,承载力与刚度退化不明显;组合剪力墙边缘预埋钢构件与剪力墙其余部分的连接属薄弱部位,应予以加强;轴压比增大时,连接区域混凝土开裂、剥落现象更严重,峰值荷载、位移延性略有提高;连梁跨度增大时,连接区域参与耗能的程度加大,混凝土破坏会更严重。利用有限元分析软件对试件的荷载-位移骨架曲线进行了数值模拟,数值模拟结果与试验结果吻合良好。In order to investigate the seismic performance of connection between steel coupling beam and steel-concrete composite shear wall, four i ： 4 scaled specimens considering the influences of beam span and axial load ratio were designed, fabricated and tested subjected to constant wall axial load and vertical cyclic reversed load at steel beam end. The load transfer mechanism and ultimate failure pattems of the specimens were observed and compared. The load-deformation hysteretic behavior, deformation capacity and stiffness degradation characteristics were discussed. Test results indicate that the bolted endplate connection can provide adequate load carrying, deformation and energy dissipation capacities. Strength and stiffness degradations are not obvious. However the internal connection of embedded steel shape at boundary elements to the web of wall needs to be enhanced. When wall axial load ratio is increased severer concrete cracking and spalling can be developed at the beam-wall connection region while peak load and displacement ductility can be slightly increased. When the coupling beam span is increased, the connection region can dissipate more energy causing severer concrete crushing. The finite element analysis was conducted to simulate the load-deformation backbone curves of the specimens. The simulated and experimental results agree very well.

关 键 词：钢-混凝土组合剪力墙 钢连梁 端板 拟静力试验 抗震性能 

分 类 号：TU398.903[建筑科学—结构工程]