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中文摘要：
针对带肋薄壁方钢管混凝土轴压短柱，通过引入混凝土强度折减系数和修正后的等效约束折减系数，将方钢管混凝土等效为圆钢管混凝土，采用统一强度理论推导出极限承载力的计算公式，并对影响因素进行了分析。将采用本研究公式计算所得的理论值与相关文献中的试验值进行比较，吻合良好，验证了公式的合理性，可为带肋方钢管混凝土柱轴压极限承载力的研究提供理论依据。
英文摘要：
Aiming at stiffened and thin-walled square concrete-filled steel tubular short columns,the square concrete-filled steel tubes were equivalent to the circle ones through introducing concrete strength reduction factor and equivalent constraint reduction factor and the ultimate bearing capacity was deduced based on the unified strength theory,with some influencing factors analyzed as well.Through com- paring the results of proposed formula with that of experiments of relevant literatures, the rationality of proposed formula is proved.The so- lution may provide theoretical references for the study of the stiffened and thin-walled square concrete-filled steel tubular short columns.
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