方钢管混凝土柱与钢梁的外肋环板节点抗震性能试验研究  

Experimental study on seismic performance of vertical stiffener joints between concrete-filled square steel tubular column and steel beam

作　　者：苗纪奎[1] 陈志华[1] 姜忻良[1] 李黎明[1] 

机构地区：[1]天津大学建筑工程学院

出　　处：《地震工程与工程振动》2007年第2期85-90,共6页Earthquake Engineering and Engineering Dynamics

基　　金：天津市建委重点科研项目(2001-01);建设部2002年科研攻关项目(02-2-5.6);天津市建设系统科学技术发展项目(2004-29)

摘　　要：为研究外肋环板节点的抗震性能,本文对3个十字型足尺试件进行了低周反复循环加载试验,分析了各试件的破坏过程及特征,然后根据实测的滞回曲线对节点的承载力、延性、耗能能力、强度退化、刚度退化等抗震性能指标进行了详细的比较分析。研究结果表明,外肋环板节点构造措施简单合理,具有较好的抗震性能。通过空钢管试件和填充混凝土试件的对比分析,表明在钢管中填充混凝土有利于改善节点的抗震性能。Three full-scale cruciform specimens are tested under low-reversed cyclic loading to study the seismic performance of vertical stiffener joint. The failure process and feature of each specimen are described and a thorough comparing analysis is carried out on the index of seismic behavior including load-carrying capacity of the joint, ductility, energy dissipation, strength degeneration and rigidity degeneration based on the experimental results of hysteretic curves. From these comparing analyses, it can be seen that the construction details of vertical stiffener joint are simple and reasonable, and this new-type joint has excellent seismic behavior. By comparing the specimen without concrete with those with concrete filled in the square tube, it is found that concrete filled in the steel tube can enhance the seismic performance of this kind of joint.

关 键 词：方钢管混凝土柱 外肋环板节点 低周反复循环加载试验 抗震性能 

分 类 号：P315.97[天文地球—地震学]