高强箍筋高强混凝土剪力墙抗震性能研究  

Seismic performance of high-strength concrete shear wall with high-strength stirrups

作　　者：李静[1] 杨鹏辉[2] Li Jing;Yang Peng-hui(Xinxiang Radio&TV University,Xinxiang 453003,China;Xi’an University of Architecture and Technology,Xi’an 710055,China)

机构地区：[1]新乡广播电视大学,河南新乡453003 [2]西安建筑科技大学,陕西西安710055

出　　处：《工程抗震与加固改造》2022年第4期27-35,共9页Earthquake Resistant Engineering and Retrofitting

基　　金：陕西省自然科学基础研究计划一般项目(面上)(2020JM-487)。

摘　　要：通过拟静力试验对比研究了带端柱高强箍筋高强混凝土剪力墙(DHSCW)试件和矩形截面高强箍筋高强混凝土剪力墙(RHSCW)试件的破坏机理、承载能力、变形特征、刚度退化和耗能性能等。研究结果表明:带端柱高强箍筋高强混凝土剪力墙在各荷载特征点的承载力是矩形截面高强混凝土剪力墙的1.5~2.0倍;屈服特征点后,带端柱高强箍筋高强混凝土剪力墙的刚度退化速率相比矩形截面高强箍筋高强混凝土剪力墙较慢;相同剪跨比下,带端柱高强箍筋高强混凝土剪力墙的位移延性系数是矩形截面高强箍筋高强混凝土剪力墙的1.3~1.8倍,累积耗能值前者是后者的2.5~4.2倍。在剪力墙截面两端设置端柱作为约束边缘构件,可以对剪力墙墙板提供有效约束,且端柱和墙板二者相互作用、协同工作,显著提高了剪力墙的承载能力和耗能能力。The failure mechanism,bearing capacity,deformation characteristics,stiffness degradation and energy dissipation of high-strength concrete shear wall specimens with boundary columns and high-strength stirrups(DHSCW)and high-strength concrete shear wall specimens with rectangular section and high-strength stirrups(RHSCW)are studied by quasi-static test.The results show that the bearing capacity of DHSCW at each load characteristic point is 1.5~2.0 times that of RHSCW;After the yield characteristic point,the stiffness degradation rate of DHSCW is slower than that of RHSCW;Under the same shear span ratio,the displacement ductility coefficient of DHSCW is 1.3~1.8 times that of RHSCW,and the cumulative energy dissipation of the former is 2.5~4.2 times that of the latter.Setting boundary columns at both ends of the shear wall section as constraint edge members can provide effective constraints on the shear wall panel,and the end columns and the panel interact and work together,which significantly improves the bearing capacity and energy dissipation capacity of the shear wall.

关 键 词：高强混凝土 剪力墙 承载能力 刚度退化 剪跨比 位移延性系数 

分 类 号：TU398.2[建筑科学—结构工程]