基于《建筑结构设计统一标准》(GBJ6 8- 84) ,应用结构可靠度分析的一次二阶矩法 ,分别对《钢 -混凝土组合结构设计规程》(DL - 5 0 85 /T - 1 999)和《战时军港抢修早强型钢 -混凝土组合结构设计规程》(GBJ- 2 0 0 0 )中有关圆钢管混凝土和方钢管混凝土轴压、纯弯及压弯构件的承载力设计公式进行了可靠度分析 ,分析结果表明 ,规程中设计公式基本满足统一标准对塑性材料可靠度指标的要求。 Based on the “unified standard of building structure design” (GBJ6 8-84) and the first order second moment method applying structural reliability analysis, the design rules of “composite design of steel and concrete” (DL - 5 0 85 / T - 1 999) (GBJ-2000), the design formulas of bearing capacity of concrete filled square steel tube and concrete filled square steel tube under axial compression, pure bending and compression-bending are all reliable Degree analysis and analysis results show that the design formulas in the procedure basically meet the requirements of the unified standards for the reliability index of plastic materials.