复合钢管混凝土柱轴压承载力的计算  

Axial bearing capacity of composite concrete-filled steel tubular columns

作　　者：张志权[1] 赵均海[1] 张玉芬[1] 李小伟[1] 

机构地区：[1]长安大学建筑工程学院,陕西西安710061

出　　处：《长安大学学报（自然科学版）》2010年第1期67-70,共4页Journal of Chang’an University(Natural Science Edition)

基　　金：陕西省自然科学基金项目(SJ08E214)

摘　　要：为了研究具有内钢管和型钢增强的复合钢管混凝土柱的承载力,将钢管混凝土统一理论推广应用于复合钢管混凝土柱轴压强度计算中,在分析了复合钢管混凝土柱轴压受力机理的基础上,综合考虑不同内外钢材的截面形式,提出了组合等效套箍系数,应用于复合钢管混凝土柱的轴压强度计算,并将计算结果与文献的试验数据进行了对比。结果表明:可以用统一理论计算复合钢管混凝土柱的轴压承载力;该方法具有形式统一、计算简便、计算精度高的优点。In order to study the bearing capacity of composite concrete-filled steel tube （CFST） reinforced by inner steel tube or steel column, the unified theory of CFST is applied to calculate the strength of the composite CFST under axial compression. The performance and mechanism of composite columns under axial compression are analyzed. With consideration of different sections of inner and outer steels, the equivalent hooping coefficient is proposed; then the strength of the composite columns is analyzed. Formula solutions are testified by test results of references. The result shows that the formular of the unified theory is also reasonable for the composite CFST columns, and it is a new simple unfied approach to calculate the axial bearing capacity of composite CFST columns with high accuracy. 2 tabs, 2 figs, 12 refs.

关 键 词：结构工程 复合钢管混凝土柱 统一理论 组合等效套箍系数 轴压承载力 

分 类 号：TU398[建筑科学—结构工程] TU318