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本文在轴压短柱试验研究的基础上，通过数值计算分析了方钢管混凝土组合截面弯矩－轴力－曲率（Ｍ－Ｎ－）关系，并且进行了简化。在此基础上，提出了用压溃理论计算方钢管混凝土偏压柱极限承载力的简化解析方法，并将其应用于工程轴压柱（因其存在初始缺陷，实际上为小偏心受压）的计算。理论计算结果与试验结果符合良好。
In this paper, based on the experimental study of axially compressed short columns, the M-N-relationships of the composite section of square steel tube were analyzed by numerical calculations and simplified. Based on this, a simplified analytical method for calculating the ultimate bearing capacity of a concrete-filled square steel tubular column under eccentric loading is proposed and applied to the engineering axial compression column (due to its initial defects, it is actually a small eccentric compression). The calculation. The theoretical calculation results are in good agreement with the test results.