空腹式型钢混凝土异形柱框架抗震性能试验研究  

EXPERIMENTAL STUDY OF SEISMIC BEHAVIORS OF LATTICE STEEL REINFORCED CONCRETE FRAME WITH SPECIAL-SHAPED COLUMNS

作　　者：刘祖强[1] 薛建阳[1] 赵鸿铁[1] 高亮[1] 

机构地区：[1]西安建筑科技大学土木工程学院,西安710055

出　　处：《工业建筑》2014年第8期151-155,共5页Industrial Construction

基　　金：国家自然科学基金项目(50978217;51308444);住房和城乡建设部科学技术项目(2012-K2-12);陕西省自然科学基础研究基金项目(2014JQ7288);陕西省教育厅科研计划项目(2013JK0979);西安建筑科技大学人才科技基金项目(RC1245)

摘　　要：通过对空腹式型钢混凝土(SRC)异形柱框架进行低周反复加载试验,观察结构的受力过程和破坏形态,获得结构的荷载-位移滞回曲线和骨架曲线以及主要阶段的荷载和位移值,并分析结构的层间位移角、延性、耗能性能及刚度退化等抗震性能指标。试验结果表明:空腹式SRC异形柱框架破坏时形成梁铰机制,属于"强柱弱梁"型结构;滞回曲线较为饱满,刚度退化小;弹塑性极限层间位移角超过规范规定的限值,抗倒塌能力强;延性和耗能能力均优于钢筋混凝土异形柱框架。Based on the experimental study on a lattice steel reinforced concrete frame with special -shaped columns under low cyclic reversed loading , the mechanical process and failure patterns were observed .The load-displacement hysteretic loops and skeleton curves and the load and displacement at different stages were obtained .The seismic behaviors such as inter-story drift ratio, ductility, energy dissipation and stiffness degradation were analyzed .Test results show that the failure mechanism of the structure is the beam-hinged mechanism , and it is a typical strong-column and weak-beam structure .The hysteretic loops are plump , and the stiffness degradation is unconspicuous . The ultimate elastic-plastic story drift rotation is larger than the limit value specified by the code , demonstrating the high capacity of collapse resistance .The ductility and energy dissipation of the structure are better than that of the reinforced concrete frame with special-shaped columns .

关 键 词：型钢混凝土 空腹式配钢 异形柱框架 抗震性能 拟静力试验 

分 类 号：TU398.9[建筑科学—结构工程] TU352.11