配置高强钢筋混凝土柱抗震性能试验研究  

Experimental Study on Seismic Performance of Concrete Columns Reinforced with High-strength Steel

作　　者：张萍[1,2] 陈晓磊[1,2] 薛松 傅剑平[1,2] ZHANG Ping CHEN Xiaoleil, XUE Song FUJianping(Key Laboratory of New Technology for Construction of Cities in Mountain Area（ Chongqing University） , Ministry of Edueation, Chongqing 400045, China School of Civil Engineering, Chongqing University, Chongqing 400045, China Chongqing Architectural Design Institute, Chongqing 400015, China)

机构地区：[1]山地城镇建设与新技术教育部重点实验室(重庆大学),重庆400045 [2]重庆大学土木工程学院,重庆400045 [3]重庆市设计院,重庆400015

出　　处：《结构工程师》2017年第3期147-155,共9页Structural Engineers

基　　金：国家自然科学基金(51478063)

摘　　要：为研究配置高强钢筋混凝土柱的抗震性能及变形能力,进行了6个配置HRB600级钢筋混凝土柱的低周反复加载试验,分析了轴压比、体积配箍率、加载方向等因素对试件破坏形态、滞回性能、骨架曲线、正截面承载能力的影响。试验结果表明:配置HRB600级纵筋柱在高轴压比下仍具有较大的极限位移角,但随轴压比增大,试件抗震性能变差;配置高强箍筋柱,在低轴压比情况下,体积配箍率变化对柱的抗震性能影响较小;在高轴压比情况下,体积配箍率较大的柱,其骨架曲线下降段更加平缓,且极限位移更大,高强箍筋能够充分发挥作用。不同加载方向对柱的承载力及变形能力有较大影响,对试件初始刚度影响较小。在试件发生正截面破坏时,受压钢筋应力能够达到屈服强度。To study the seismic behavior and deformation capacity of reinforced concrete columns reinforced with high-strength steel, a total of 6 concrete columns reinforced with HRB600 under reversed cyclic loading tests were carried out. The effects of axial compression ratio, volume ratio and loading direction on the failure pattern, hysteresis behavior, skeleton curve, and normal section strength of the specimens were analyzed. Experimental results showed that：the concrete columns reinforced with HRB600 under high axial compression ratio have a large ultimate displacement angle, but the larger the axial compression ratio, the seismic performance of the specimens is worse; For concrete columns with high-strength stirrups, the seismic performance was less affected by the stirrup rate changes in low axial compression ratio, but when in high axial compression ratio, with a larger stirrup ratio, the skeleton curve descending more slowly, and the ultimate displacement is larger, high-strength stirrup can be fully used. The different loading direction has greater influence on the bearing capacity and deformation of the specimens, and has little influence on the initial stiffness of the column. When the normal section failure longitudinal bars can reach the yield strength. occurred to the specimens, the stress of compressive

关 键 词：高强钢筋 钢筋混凝土柱 抗震性能 

分 类 号：TU352.11[建筑科学—结构工程] TU375.1