L形高强钢筋高强混凝土短肢剪力墙抗震性能试验研究  

Experimental study on seismic behavior of L-shaped short-leg shear wall with high strength reinforcement and high strength concrete

作　　者：刘俊雄 张品乐[1] 杨文豪 LIU Junxiong;ZHANG Pinle;YANG Wenhao(Faculty of Civil Engineering and Mechanics,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：《地震工程与工程振动》2020年第1期185-195,共11页Earthquake Engineering and Engineering Dynamics

基　　金：国家自然科学基金项目(51568028)~~

摘　　要：L形短肢剪力墙由于其肢短的特点,已经广泛应用于民用建筑的外围结构。为研究使用高性能材料加强后的新型L形短肢剪力墙的抗震性能,本文基于不同轴压比、高宽比和配箍率,设计制作了六片短肢剪力墙试验模型,对其进行了低周往复荷载试验,根据试验结果,对试件的滞回性能、刚度退化、破坏形态、耗能能力等抗震性能指标进行分析与研究。结果表明:高强材料的使用提高了试件的整体承载能力;在满足最小配箍率的前提下适当增大配箍率有利于提高试件的承载力和延性;轴压比大小是影响试件破坏形态的主要因素,随着轴压比逐渐增大,试件趋于脆性破坏;高厚比大小是影响试件抗震性能的次要因素,其影响程度主要根据工程实际情况来确定,但可以肯定的是,较大高厚比有利于提升墙体的稳定性和承载能力。L-shaped short-leg shear wall has been widely used in the external structure of civil buildings because of its short legs.In order to study the seismic performance of the new type of L-shaped short-leg shear wall reinforced with high performance materials,Six shear wall models were designed and manufactured based on different axial compression ratio,height-width ratio and stirrup ratio.The low cycle reciprocating load test was carried out.According to the test results,the hysteresis performance,stiffness degradation,failure mode and energy dissipation capacity of specimens were analyzed and studied.The study show that the use of high-strength materials will improve the load-carrying capacity of the specimen as a whole.Properly increasing the stirrup ratio under the prerequisite of satisfying the minimum stirrup ratio can improve the bearing capacity and ductility of specimens.The axial compression ratio is the main factor that affecting the failure mode of the specimen,with the axial compression ratio is increased gradually,the specimen tends to brittle failure.The ratio of height to thickness is the secondary factor that affecting the seismic performance of the specimens,which the degree of influence is determined according to the actual engineering situation,but it can be certainly,a large ratio of height to thickness is beneficial to improve the stability and bearing capacity of the wall.

关 键 词：高强钢筋 高强混凝土 短肢剪力墙 抗震性能 试验研究 

分 类 号：TU317[建筑科学—结构工程] TU375