SRC-RC转换柱抗震性能试验研究  

Experimental study on seismic behavior of SRC-RC transfer columns

作　　者：薛建阳[1] 伍凯[1,2] 赵鸿铁[1] 邵永健[3] 蒋孝伟[1] 

机构地区：[1]西安建筑科技大学土木工程学院,陕西西安710055 [2]河海大学土木与交通学院,江苏南京210098 [3]苏州科技学院江苏省结构工程重点实验室,江苏苏州215011

出　　处：《建筑结构学报》2010年第11期102-110,共9页Journal of Building Structures

基　　金：国家自然科学基金项目(50978217);教育部高等学校博士学科点专项科研基金项目(20096120110005);教育部留学回国人员科研基金项目(教外司留[2007]1108号);陕西省教育厅自然科学专项基金项目(09JK551);陕西省重点学科建设专项基金项目(E01003)

摘　　要：以型钢延伸高度、配钢率、轴压比以及不同构造措施等为设计参数,对21个SRC-RC转换柱试件和1个钢筋混凝土柱对比试件采用"建研式"加载设备进行了低周反复荷载试验。研究SRC-RC转换柱的滞回曲线、骨架曲线、承载力、变形能力、位移延性系数及耗能能力等抗震性能。试验结果表明:SRC-RC转换柱的破坏形式有剪切破坏、弯曲破坏和粘结破坏,其中剪切破坏多发生于柱的顶部;21个转换柱试件的位移延性系数介于1.97与5.99之间,试件的延性受到型钢延伸高度、配钢率、轴压比及配箍率等诸多因素影响,抗震性能相差较大。采用箍筋加密措施并适当增加型钢延伸高度的SRC-RC转换柱试件的承载能力和变形能力均好于同条件下的钢筋混凝土柱,可以推广应用于高层建筑中。Experimental study on 21 SRC-RC transfer columns and 1 reinforced concrete column under low cyclic reversed loading is carried out.The study mainly focuses on seismic behavior of transfer columns affected by extent of shape steel,ratio of shape steel,axial load ratio and various conformations in details.Some factors of seismic behaviors are studied and analyzed,such as hysteretic loops,skeleton curves,bearing capacity and deformation ability,displacement ductility,and energy dissipation ability.It is shown that failure patterns include shear failure,bending failure and bond failure.Shear failure frequently occurs and mainly appears at the top of columns.Seismic behaviors of the 21 SRC-RC transfer specimens are quite different and the displacement ductility coefficient is diverse from 1.97 to 5.99.Bearing and deformation capacities of SRC-RC transfer columns with short spaced stirrups and appropriate length of shape steel are better than those of reinforced concrete column and can be applied in high-rise buildings.

关 键 词：型钢混凝土 转换柱 低周反复荷载试验 滞回特性 抗震性能 

分 类 号：TU398[建筑科学—结构工程] TU317.1