钢管混凝土空心柱轴压承载力研究  

Research on the Bearing Capacity under Axial Compressive Load of Concrete-filled Steel Tubular Hollow Columns

作　　者：张兆强[1] 赵均海[2] 

机构地区：[1]西南科技大学土木工程与建筑学院,绵阳621010 [2]长安大学建筑工程学院,西安710061

出　　处：《特种结构》2008年第4期29-32,共4页Special Structures

基　　金：教育部博士点基金资助项目(20040710001);陕西省自然科学基金项目(2005E204)

摘　　要：运用统一强度理论,考虑钢管因环向受拉导致纵向应力降低的影响,得出了钢管混凝土空心长、短柱轴压极限承载力的计算公式,并分析了中间主应力等因素对极限承载力的影响规律,极限承载力随着参数b值的增大而增大。利用本文计算公式所得结果与文献试验结果进行对比,吻合较好,验证了运用统一强度理论进行钢管混凝土空心柱轴压力学性能分析的可行性和正确性。The ultimate load calculation formula for the concrete-filled steel tubular hollow columns is denved based on the Unified Strength Theory（UST） in this paper. The decrease of longitudinal stress because of the hoop tensile tension is considered in the formula. The influence of intermediate principal stress on the ultimate load is also studied. The ultimate load increases with the increase of eoefficient b. The results of the proposed formula are found in good agreement with experiment results.

关 键 词：统一强度理论 钢管混凝土空心柱 轴心受压 承载力 

分 类 号：TU398.9[建筑科学—结构工程]