方形截面钢管混凝土压弯构件承载力设计计算

Design calculations of load - bearing capacities for concrete filled square steel tubular members

根据大量的分析计算和试验结果，给出了方形截面钢管混凝土（简称方钢管混凝土）组合轴压强度承载力、组合轴压稳定承载力和纯弯构件承载力的设计计算公式，在此基础上，推荐了方钢管混凝土压弯构件承载力的设计计算公式，并给出了包括组合轴压强度设计值、组合轴压稳定系数和构件截面抗弯塑性发展系数等有关设计指标的简化计算公式和表格，可供有关工程设计时参考。

On the base of a lot of analyses and experimental results, bearing capacity of compression strength and stability as well as bending strength of concrete filled square steel tubular members are presented in this paper. At the same time, design calculating formulas of concrete filled square steel tubes subjected to compression and bending moment are deduced. Also, forms and design calculating formulas of concerning design indexes including composite axial strength, composile compression stable ratio and section plastic ratio are represented, which can be referred for practical engineering design.