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分析方、矩形钢管混凝土柱子在轴压和双向弯矩作用下形成塑性铰时轴力-双向弯矩之间的相关关系。采用自编软件计算方钢管和矩形钢管混凝土截面,提出了简化计算式计算方、矩钢管混凝土截面的承载力。同时对圆钢管混凝土也进行了推导,发现矩形钢管混凝土单向压弯的计算式也适用于圆钢管混凝土柱子。
Analytical and Rectangular Concrete Filled Steel Tubular Columns Correlation between Axial Force-Bi-directional Moment at Plastic Hinge under Axial Compression and Bi-directional Moment. The self-made software is used to calculate the section of concrete-filled square steel tube and rectangular CFST, and the bearing capacity of concrete filled square steel tube section with simplified calculation formula is proposed. At the same time, the CFST is also deduced. It is found that the formula for the unidirectional bending of CFST is also applicable to the CFST columns.