建筑结构学报2013，Vol.34Issue(9)：40-48,9.
复式钢管混凝土柱与H形钢梁连接节点抗震性能试验研究
Experimental study on seismic behavior of connection between composite CFST column and H-shaped steel beam
摘要
Abstract
Learned from the vertical stiffener joint of square concrete filled steel tube (CFST) column,one new connection between composite CFST column and H-shaped steel beam was studied by test.This connection consists of vertical stiffeners connecting the beam flange to the column flange,meanwhile anchorage plate is groove welded on inner steel tube,coming through the outer steel tube,and welded and bolted connected with the steel beam web.Seven joint specimens were tested under cyclic loads to investigate the seismic behavior of composite connections.Based on the experiments,the failure process and feature of each specimen were described and hysteretic loops,loadcarrying capacity,ductility,stiffness degradation,strength degradation and energy dissipation capacity,etc.,were studied.The results show that failure modes of the tested specimens are basically the same:steel of the horizontal end plate yields first and plastic hinges form afterwards; the connections with ribbed anchorage plate can reach a higher load-bearing and deformation capacity than the connections without ribs; the extension of the vertical stiffener can improve the initial stiffness of the joint,and it is also effective in moving the buckling zone away from the joint zone.The hysteretic characteristics of the connections is stable and the energy dissipation capacity,strength and ductility are sufficient.In the whole loading process,the stiffness degradation is obvious and bearing capacity degradation is slow,so the seismic performance of the proposed new type of connection is adequate to be applied in seismic areas.关键词
梁柱节点/复式钢管混凝土柱/钢梁/拟静力试验/抗震性能Key words
beam-column joint/composite CFST column/ steel beam/ quasi-static test/seismic performance分类
建筑与水利引用本文复制引用
张玉芬,张冬芳,赵均海..复式钢管混凝土柱与H形钢梁连接节点抗震性能试验研究[J].建筑结构学报,2013,34(9):40-48,9.基金项目
国家自然科学基金项目(51008027). （51008027）
