钢管混凝土柱偏压承载力新公式  

New formula of bearing capacity for concrete-filled steel tubular column subjected to eccentric compression load

作　　者：杜闯[1,2] 魏少武[3] 杨小明[1,2] 白海丽[1,2] 

机构地区：[1]河北工业大学土木工程学院,天津300401 [2]河北省土木工程技术研究中心,天津300401 [3]长庆石油勘探局房地产开发公司,西安710021

出　　处：《沈阳工业大学学报》2014年第2期235-240,共6页Journal of Shenyang University of Technology

基　　金：河北省科技支撑计划资助项目(12273937);河北省教育厅青年基金资助项目(QN20131177)

摘　　要：为了研究钢管混凝土柱偏压承载力计算公式,在对比钢筋混凝土柱和钢管混凝土柱的基础上,分析了二者的组成特点,并通过类比理论研究相对比较成熟的钢筋混凝土柱的偏压计算公式.采用平截面假定,通过静力平衡条件、几何变形条件和物理条件,根据钢管混凝土柱偏压受力特点,从理论上推导了钢管混凝土柱的大、小偏压承载力计算公式,为钢管混凝土柱偏压承载力计算提供了一种新算法,对钢管混凝土的理论发展及推广应用提供了依据.Abstract： In order to study the calculation formula of bearing capacity for concrete-filled steel tubular （CFST） column subjected to eccentric compression load, the component characteristics of both reinforced concrete （RC） column and CFST column were analyzed through comparing RC and CFST columns. The calculation formula of RC column under eccentric compression load, where the theory research was relatively mature, was established. Through adopting the plane section assumption, static equilibrium conditions, geometrical deformation conditions and physical conditions as well as according to the force characteristics of CFST column, the calculation formula of bearing capacity for CFST column under both large and small eccentric compression loads was theoretically derived. The present study provides not only a new algorithm for calculating the eccentric beating capacity of CFST column, but also the basis for the theory development as well as the popularization and application of CFST column. Key words： RC column; CFST column; bearing capacity; large eccentric compression; small eccentric compression; load; formula; confined concrete

关 键 词：钢筋混凝土柱 钢管混凝土柱 承载力 大偏压 小偏压 荷载 公式 约束混凝土 

分 类 号：TU375.3[建筑科学—结构工程]