带约束拉杆矩形钢管混凝土短柱承载力计算  

Bearing Capacity Calculation of Rectangular Concrete Filled Steel Tube (CFT) Stub Columns With Binding Bars

作　　者：李华钢[1] 蔡健[2,3] 

机构地区：[1]华南理工大学广州学院,510800 [2]华南理工大学亚热带建筑科学国家重点实验室,广州510640 [3]华南理工大学土木与交通学院,广州510640

出　　处：《混凝土与水泥制品》2012年第3期49-54,共6页China Concrete and Cement Products

基　　金：国家自然科学基金资助项目(50878087)

摘　　要：采用带约束拉杆矩形钢管混凝土的本构关系,利用纤维模型法对带约束拉杆矩形钢管混凝土短柱承载力进行了数值分析,计算结果与试验结果吻合良好。利用经试验结果验证的计算程序对带约束拉杆矩形钢管混凝土短柱轴压和单、双向偏压承载力进行了较系统的参数分析,回归出带约束拉杆矩形钢管混凝土轴压和单、双偏压承载力简化计算公式,公式的计算精度高,形式简单,便于应用,可供工程设计参考。Fiber model method is adopted to calculate the bearing capacity of rectangular concrete filled steel tube（CFT） stub columns with binding bars and the constitutive relationship of rectangular CFT with binding bars is employed in the numerical analysis.The numerical results are in good agreement with the experimental ones.The parameters analysis of the bearing capacity of the CFT stub columns subjected to axial,uniaxial and biaxial eccentric loading are performed by using verified programs through experimental results.Simplified formulas for axial and eccentric bearing capacity of rectangular CFT stub columns with binding bars are presented by regression,which have high accuracy,simple expression and can be useful as references to the design of relational projects.

关 键 词：矩形钢管混凝土 短柱 约束拉杆 承载力 数值分析 简化公式 

分 类 号：TU525[建筑科学—建筑技术科学]