中文摘要：

以长细比、套箍系数为主要参数，利用课题组轴心受压试验数据，分析GB50936-2014（钢管混凝土结构技术规范》中圆钢管混凝土轴压柱受压承载力计算公式的合理性。分析结果表明：在本研究参数的研究范围内，国家现行钢管混凝土结构技术规范中提供的承载力计算公式具有一定的安全储备，但不同参数范围内的安全储备不同。短柱范围内，规范计算公式的保守性较高，其数值与试验值存在较大的差异；随着长细比的增大，规范计算值与试验值逐步趋近。同时，试件的套箍系数越大，规范计算值越保守，在套箍系数达到1．8之后，试验值与计算值的比值趋于稳定。从经济性与适用性的角度出发，建议工程中采用1．1～1．5的套箍系数。研究结果对工程应用和规范修订有一定的参考价值。

英文摘要：

The slenderness ratio, confinement coefficient is the main parameter, by using the test data of axial compression from our research group, analysis of ＂technical specification of steel tube concrete structure＂ （GB 50936-2014 ） in the rationality of circular steel tube concrete column bearing capacity calculation formula.The analysis results show that the bearing safety formulas with certain security reserve by the code in current concrete filled steel tubular structure, but with different range of parameters, the security reserve is different.In the range of short column, the conservatism of the specification is high, there is a great difference between the numerical and experimental values.With the increase of slenderness ratio, standard calculation value and the test value gradually approaching. At the same time, as the confinement coefficien increase, the calculate value more conservative, after the confinement coefficient reached 1.8, the ratio of the test values and the calculated values tends to be stable.From the economic perspective and applicability, proposed project use 1.1-1.5 confinement coefficient.The research results have certain reference value for engineering application and specification revision.