T形截面短肢剪力墙恢复力模型试验研究  

Experimental research on restoring force model of short pier shear wall with T-shaped section

作　　者：张品乐[1] 刘俊雄 ZHANG Pinle;LIU Junxiong(College of Civil Engineering,Kunming University of Science and Technology,Kunming 650500,China)

机构地区：[1]昆明理工大学建筑工程学院

出　　处：《四川建筑科学研究》2019年第5期37-41,共5页Sichuan Building Science

基　　金：国家自然科学基金(51568028,10572107)

摘　　要：T形截面短肢剪力墙在不同受力方向的滞回特性相差巨大,现有恢复力模型无法考虑不同受力方向对T形截面短肢剪力墙滞回性能的影响。本文通过对6个1/2比例的T形截面短肢剪力墙试件进行低周反复加载试验,研究了轴压比、受力方向及截面高厚比对T形截面短肢剪力墙构件滞回特性的影响,在试验研究的基础上,确定了恢复力模型的滞回规则、刚度退化率以及强度退化率,建立了考虑不同受力方向对滞回特性影响的T形截面短肢剪力墙恢复力模型。研究结果表明,本文提出的T形截面短肢剪力墙“三线型”恢复力模型,能够较好地反映T形截面短肢剪力墙构件的恢复力特性,其成果可为此类结构的弹塑性地震反应分析提供有效的理论支撑。The hysteretic behavior of short pier shear wall with T-shaped section varies greatly in different loading directions.The existing restoring force model cannot consider the effect of different loading directions to the hysteretic behavior of short pier shear wall with T-shaped section.To study the hysteretic behavior of short pier shear wall with T-shaped section,6 short pier shear wall with T-shaped section specimens are tested under low cyclic loading with varied axial load ratios,different loading directions and sectional depth-thick ratios.Characteristics of hysteretic curves are analyzed,hysteretic rules and stiffness degradation rate are determined,restoring force model that considers the effect of two loading directions to hysteretic characteristics is proposed based on experimental research.The results show that the restoring force model proposed in this paper can better reflect the restoring force characteristics of short pier shear wall with T-shaped section,providing effective theoretical support for the elastic-plastic seismic response analysis of such structures.

关 键 词：恢复力模型 试验研究 短肢剪力墙 

分 类 号：TU375[建筑科学—结构工程]