600 MPa级钢筋混凝土短柱抗震性能研究  

RESEARCH ON SEISMIC BEHAVIOR OF CONCRETE SHORT COLUMNS WITH 600 MEGAPASCAL REINFORCED BARS

作　　者：赵少伟[1,2] 韩松[1] 朱凯[1] 

机构地区：[1]河北工业大学土木与交通学院,天津300401 [2]河北省土木工程技术研究中心,天津300401

出　　处：《工业建筑》2017年第6期1-5,12,共6页Industrial Construction

基　　金：天津建委科技项目(2015-2)

摘　　要：为了研究高强钢筋混凝土短柱的抗震性能,设计了7根配置高强箍筋的混凝土短柱进行拟静力试验,研究构件的破坏过程、破坏模式,分析了轴压比、箍筋强度、箍筋间距及箍筋形式对其滞回曲线、耗能能力、骨架曲线以及延性的影响。研究结果表明:配置600 MPa级高强箍筋的混凝土短柱破坏形态皆为弯剪型破坏;轴压比是影响抗震性能的主要因素之一,在高轴压比下构件破坏时,大部分构件高强箍筋在位移控制阶段发生屈服,说明配置高强箍筋的混凝土短柱具有良好的延性和耗能能力。To research the seismic behavior of concrete short columns with high-strength reinforced bars,7 highstrength concrete short columns confined with high-strength stirrups were designed for pseudo-static test. In the experiment,the process and modes of member failure were studied,and the axial compression ratio,stirrup strength,stirrup spacing and stirrup form influenced its hysteretic characteristics,energy dissipation,skeleton curves and ductility performance of columns were analyzed. The results indicated that the failure modes of concrete short columns with 600 MPa high strength stirrup were bending-shear failure. Axial compression ratio was the main factor affecting the seismic performance. The high-strength stirrups in most members yielded in displacement control stage with high axial compression ratio. The concrete short columns with 600 MPa high-strength stirrups had good ductility and energy dissipation capacity.

关 键 词：短柱 拟静力试验 高强箍筋 轴压比 延性 

分 类 号：TU352.11[建筑科学—结构工程] TU375.3