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第 27 卷第 4 期建筑结构学报 Vol 27 ,No 4
2006 年 8 月 Journal of Building Structures Aug 2006
文章编号:1000 - 6869(2006) 04 - 0073 - 07
钢管混凝土偏压格构柱长细比影响试验研究
陈宝春1 , 欧智菁1 ,2
(1 福州大学土木建筑工程学院,福建福州 350002 ; 2 福建工程学院,福建福州 350007)
摘要:进行了钢管混凝土格构柱偏心受压试验,试验参数为长细比。介绍了试验的情况和过程,对柱肢钢管纵向应变、环
向应变、缀管的纵向应变等进行了分析。研究结果表明,随长细比的增加,钢管混凝土格构柱的极限承载力逐渐降低。
柱肢以受轴压为主,属于小偏压构件。近载侧的柱肢在试件进入非线性后紧箍效应开始发生作用。缀管的受力较小且
都处在弹性阶段。受缀管的影响,节点处柱肢钢管环向应变很大,它是引起柱肢钢管撕裂从而导致试件破坏的主要原
因。
关键词:受力性能;钢管混凝土;格构柱;偏心受压
中图分类号:TU528 59 TU317 1 文献标识码:A
Experimental study on influence of slenderness ratio in concrete filled steel
tubular laced columns under pression
CHEN Baochun1 , OU Zhijing1 ,2
(1 College of Civil Engineering and Architecture , Fuzhou University , Fuzhou 350002 , China ;
2 Fujian University of Technology , Fuzhou 350007 , China)
Abstract : Eccentrically loaded concrete filled steel tubular (CFST) laced columns were tested with slenderness ratio as main
experimental parameter. Detailed strain measurement and analysis were conducted for the longitudinal elements and the lacing
tubes. Test results indicate that the ultimate load carrying capability of the CFST laced pressed eccentrically
reduces with the increase of slenderness ratio. pression force dominates the loading condition in the longitudinal
elements and thus they can be considered as eccentrically loaded column with