建筑结构

2009, v.39;No.306(06) 5-8

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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

王毅;陈以一;王伟;徐永基;吕旭东;
Wang Yi~1,Chen Yiyi~1,Wang Wei~1,Xu Yongji~2,Lü Xudong~2 (1 Tongji University,Shanghai 200092,China;2 China Northwest Building Design Research Institute Co.Ltd.,Xi'an 710003,China)

摘要(Abstract):

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(KeyWords): 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
CFT;semi-embeded column base;experimental research;mechanism analysis;ductility;ultimate capacity

Abstract:

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基金项目(Foundation):

作者(Author): 王毅;陈以一;王伟;徐永基;吕旭东;
Wang Yi~1,Chen Yiyi~1,Wang Wei~1,Xu Yongji~2,Lü Xudong~2 (1 Tongji University,Shanghai 200092,China;2 China Northwest Building Design Research Institute Co.Ltd.,Xi'an 710003,China)

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DOI: 10.19701/j.jzjg.2009.06.002

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