足尺钢管混凝土柱梁节点抗剪性能试验  

Full-scale Experimental Research on Shear Capacity of Concrete-filled-steel-tube Column Connections

作　　者：康利平[1] 吕西林[1] 

机构地区：[1]同济大学土木工程防灾国家重点实验室,上海200092

出　　处：《同济大学学报（自然科学版）》2014年第8期1153-1160,共8页Journal of Tongji University:Natural Science

基　　金："十二五"国家科技支撑计划(2011BAJ09B01-03);国家自然科学基金重大国际合作项目(51261120377);国家自然科学基金重大研究计划集成项目(913153014)

摘　　要：对10个不同节点构造的足尺钢管混凝土柱-梁节点在不同轴压比下的抗剪性能进行了试验研究.在此基础上,对不同的节点域抗剪承载力计算公式进行了比较分析,并进一步讨论了节点域受剪性能的数值模拟(OpenSEES)方法.研究表明,所有的节点均表现出良好的抗剪性能;中国规范建议的节点域抗剪承载力公式有待改进;OpenSEES数值模型合理地模拟了节点域的剪力-剪切变形性能.Experimental research was conducted on 10 full-scale concrete-filled-steel-tube （CFT） column connections to investigate their seismic performance under various axial force ratios.Different shear strength equations were compared,and the shear strength-deformation relations were further implemented into OpenSEES simulations.Results show that all tested CFT connections present excellent shear capacity in resisting lateral loadings; the equations proposed in Chinese specifications need improving; and OpenSEES model provides reasonable simulations on both shear strength and shear deformations of the joints.

关 键 词：钢管混凝土柱节点 剪切承载力 剪力-剪切变形曲线 足尺试验 数值分析 

分 类 号：TU375[建筑科学—结构工程]