CFST柱-RC梁钢筋环绕式节点抗震性能试验  

EXPERIMENTAL INVESTIGATION ON CYCLIC PERFORMANCE OF CFST COLUMN-RC BEAM JOINTS ENCLOSED BY REBARS

作　　者：曲慧[1] 陶忠[1] 韩林海[2] 

机构地区：[1]福州大学土木工程学院,福州350002 [2]清华大学土木工程系,北京100084

出　　处：《工业建筑》2006年第11期27-31,22,共6页Industrial Construction

基　　金：国家杰出青年科学基金(编号:50425823);福建省引进高层次人才科研启动费资助项目

摘　　要：通过8个钢管混凝土(CFST)柱-钢筋混凝土(RC)梁钢筋环绕式节点在低周往复荷载作用下的试验,对其在不同轴压比下的开裂破坏模态、滞回特征、剪切变形、钢筋和钢牛腿变形、延性和耗能性能等进行系统研究。试验结果表明,试验节点的破坏模态均为核心区剪切破坏,圆钢管混凝土柱节点较方钢管混凝土柱节点的滞回曲线饱满,但均能满足现行规范的抗震设计要求。Tests on eight concrete filled steel tubular （CFST） column-reinforced concrete （RC） beam joints enclosed by rebars under reversed loading were carried out. The failure patterns, hysteretic characteristics, shear transformation, rebar and steel bracket deformations, ductility and energy dissipation under different axial load levels for joints with circular or square columns are discussed in details. The results indicated that all the joints failed in shear failure pattern. Generally, the hysteretic curves for joints with circular columns were plumper than those with square columns, and the seismic performance of all joints can satisfy current Chinese seismic code requirements.

关 键 词：钢管混凝土 钢筋混凝土梁 钢筋环绕式节点 低周往复加载 抗震性能 

分 类 号：TU375.1[建筑科学—结构工程]