带PEC端柱混凝土剪力墙抗震性能试验研究  

Experimental Studies on the Seismic Behavior of Concrete Shear Wall with PEC Columns

作　　者：李奉阁 陈玥 赵根田 LI Fengge;CHEN Yue;ZHAO Gentian(School of Civil Engineering,Inner Mongolia University of Science and Technology,Baotou O14010,China)

机构地区：[1]内蒙古科技大学土木工程学院,内蒙古包头014010

出　　处：《建筑钢结构进展》2023年第5期24-31,共8页Progress in Steel Building Structures

基　　金：国家自然科学基金(51268042)。

摘　　要：为研究带PEC端柱混凝土剪力墙的抗震性能,对两片相同的带PEC端柱混凝土剪力墙试件进行了低周反复荷载试验研究。对试件的破坏现象、滞回曲线、骨架曲线、耗能能力、应变变化规律和承载力进行分析,并研究了轴压比的影响,结果表明:带PEC端柱混凝土剪力墙试件具有较高的承载能力和耗能能力,延性系数达到4.84~5.16,表现出良好的抗倒塌能力;随着试验轴压比的增大,试件的极限承载力有些许提高,但延性降低。按现行《组合结构设计规范》(JGJ 138—2016)中相关公式计算的承载力与试验值吻合较好。与普通混凝土剪力墙相比,带PEC端柱混凝土剪力墙的承载力提升明显。In order to study the seismic performance of concrete shear walls with PEC end columns,low-cycle reversed loading tests are carried out on two identical specimens of concrete shear walls with PEC end columns.The failure modes,hysteresis curve,skeleton curve,energy dissipation capacity,strain change law and bearing capacity of specimens are analyzed,and the influence of the axial compression ratio is studied.The results show that the concrete shear wall specimens with PEC end columns have better bearing capacity and energy dissipation capacity,and the ductility coefficient can reach 4.84-5.16,which shows a good collapse resistance.With the increase of the test axial compression ratio,the ultimate bearing capacity of the specimens also increase slightly,but the ductility is decreased.The bearing capacity calculated based on the relevant formula in the Code for Design of Composite Structures(JGJ 138-2016)is in a good agreement with the test data,and is improved significantly when compared with ordinary concrete shear walls.

关 键 词：PEC柱 混凝土剪力墙 低周反复荷载试验 抗震性能 边缘构件 轴压比 延性系数 

分 类 号：TU352.11[建筑科学—结构工程]