国内外规范对圆钢管混凝土短柱轴压承载力的比较

Comparison of Axial Compressive Bearing Capacity of Concrete Filled Steel Tubular Stub Columns at Home and Abroad

列举了国内外规范中圆钢管混凝土短柱轴压承载力的设计公式,分别从适用范围、套箍约束作用和公式的理论基础等角度,分析其差异性,并通过具体试验算例进行对比研究。研究结果表明,不同国家规范中的表达式与关键参数都有明显的差异,且通过比较可知国外规范中的计算结果相比于试验结果都偏于保守,中国的3部规范与其他国家的规范相比试验结果更加吻合。

The different standards of domestic and overseas about concrete filled steel tubular short column axial load capacity design formula were listed,and their differences were analyzed respectively from angles of comparative study was carried through applicable scope,hoop constraint,formula and calculation of specific test examples.The research results show that the formulas and key parameters in standards of different countries have obvious differences and comparative study results show that the calculation results in foreign codes are more conservatives than the experimental results.However the calculation results in the three norms of China are more consistent with the experimental results than the other countries.