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（1 同濟(jì)大學(xué)，上海 200092； 2 中國(guó)建筑西北設(shè)計(jì)研究院有限公司，西安 710003）
［摘要］針對(duì)內(nèi)置芯柱與不設(shè)芯柱的兩種鋼管混凝土外包式柱腳試件進(jìn)行了定軸力下的低周水平反復(fù)加載試驗(yàn)，分析了鋼管混凝土外包式柱腳節(jié)點(diǎn)的受力機(jī)理，并提出了估算外包式柱腳節(jié)點(diǎn)壓彎極限承載力的計(jì)算方法。對(duì)采用兩種構(gòu)造形式的柱腳延性進(jìn)行了比較分析，得到了芯柱構(gòu)造可以提高柱腳抗震性能的結(jié)論。
［關(guān)鍵詞］鋼管混凝土；外包式柱腳；試驗(yàn)研究；機(jī)理分析；延性；極限承載力
Experimental research on moment resistance property of semi-embeded CFT column base
Wang Yi1, Chen Yiyi1, Wang Wei1, Xu Yongji2, Lü Xudong2 (1 Tongji University, Shanghai 200092, China; 2 China Northwest Building Design Research Institute Co. Ltd., Xi′an 710003, China)
Abstract: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.
Keywords:CFT; semi-embeded column base; experimental research; mechanism analysis; ductility; ultimate capacity
通訊作者：陳以一，教授，博導(dǎo)，Email:yiyichen@#edu.cn。
參考文獻(xiàn)
［1］KAWAGUCHI J, MORINO S. Experimental study on strength and stiffness of bear type CFT column base with central reinforcing bars［J］. Composite Construction in Steel and Concrete, 2006, V(N).
［2］JGJ99—98 高層民用建筑鋼結(jié)構(gòu)技術(shù)規(guī)程［S］. 北京：中國(guó)建筑工業(yè)出版社，1998.
［3］唐九如.鋼筋混凝土框架節(jié)點(diǎn)抗震［M］.南京：東南大學(xué)出版社，1989.