钢管混凝土外包式柱脚抗弯性能试验研究  

Experimental research on moment resistance property of semi-embeded CFT column base

作　　者：王毅[1] 陈以一[1] 王伟[1] 徐永基[2] 吕旭东[2] 

机构地区：[1]同济大学,上海200092 [2]中国建筑西北设计研究院有限公司,西安710003

出　　处：《建筑结构》2009年第6期5-8,共4页Building Structure

摘　　要：针对内置芯柱与不设芯柱的两种钢管混凝土外包式柱脚试件进行了定轴力下的低周水平反复加载试验,分析了钢管混凝土外包式柱脚节点的受力机理,并提出了估算外包式柱脚节点压弯极限承载力的计算方法。对采用两种构造形式的柱脚延性进行了比较分析,得到了芯柱构造可以提高柱脚抗震性能的结论。Two kinds of semi-embeded CFT column base, with or without inner cage by steel bar, were tested under constantly compressive load and repeated horizontal load. The mechanism of failure of the column bases was analyzed, and an estimation for ultimate bearing capacity of the column base was proposed. It is concluded that the seismic resistance of semi-embeded CFT column base can be raised by inner cage.

关 键 词：钢管混凝土 外包式柱脚 试验研究 机理分析 延性 极限承载力 

分 类 号：TU398.9[建筑科学—结构工程] TU328