型钢增强型钢管混凝土柱的轴压承载力计算  

Calculation of Axial Bearing Capacity of Concrete-Filled Steel Tube Reinforced by Steel Columns

作　　者：张志权[1] 张玉芬[1] 赵均海[1] 

机构地区：[1]长安大学建筑工程学院,陕西西安710061

出　　处：《江南大学学报（自然科学版）》2009年第3期323-326,共4页Joural of Jiangnan University (Natural Science Edition)　

基　　金：陕西省自然科学基金项目(SJ08E214);长安大学青年基金项目(07Q01)

摘　　要：依据钢管混凝土的统一理论,将型钢增强的钢管混凝土组合柱的研究成果推广应用到此类组合柱的轴压强度计算中。文中分析了型钢增强型钢管混凝土组合柱轴压受力机理,考虑不同内外钢管和型钢的截面形式,提出采用组合柱等效套箍系数计算组合柱的轴压强度。计算结果分别与文献试验数据进行对比,数据吻合较好,表明可以用统一理论方法计算型钢增强型钢管混凝土组合柱的轴压承载力,为该组合柱承载力设计计算提供了一种新的理论方法。Concrete-Filled Steel Tube （CFST） reinforced by steel columns has been studied in engineering recent years. According to the Unified Theory of CFST, the paper introduces its method into counting strength of the composite CFST columns under axial compression. The performance and mechanism of CFST reinforced by steel columns under axial compression are analyzed. With consideration of different cross-section, the equivalent hooping coefficient is calculated. The strength of the composite column is respectively analyzed. The formula solutions are testified by test results from the references. The result shows that the formulas of the Unified Theory can be applied to CFST reinforced by steel columns. It is a new approach to calculate the axial bearing capacity of the composite column.

关 键 词：型钢增强型 钢管混凝土 统一理论 轴压承载力 

分 类 号：TU398[建筑科学—结构工程]