根据塑性理论下限定理,对于给定的轴向力,由平衡条件任意分配钢骨部分和钢筋混凝土部分承担的轴力,并分别求得相应各部分的受弯承载力,两部分受弯承载力之和的最大值,即为钢骨混凝土柱在该轴力下的受弯承载力。本文针对工程中常用的对称配筋形式,推导出解析解,解决了直接采用一般叠加方法计算钢骨混凝土柱正截面承载力反复试算的困难,讨论了钢骨部分和钢筋混凝土部分所承担轴力比例的影响因素,并在大量计算分析的基础上,提出了简化的计算方法,为一般叠加方法的工程应用提供了理论基础和简捷的计算方法。 According to the lower bound theorem of plasticity theory, for a given axial force, the axial force borne by the steel part and the reinforced concrete part is arbitrarily distributed by the equilibrium condition, and the bending bearing capacity of each part is calculated respectively. The two-part bending bearing capacity The maximum of the summation is the flexural capacity of SRC columns under the axial force. In this paper, the analytical solution is deduced for the form of symmetrical reinforcement commonly used in engineering. This method solves the difficulty of repeated trial calculation of the normal section bearing capacity of steel reinforced concrete columns directly by the general stacking method. The effects of the steel shaft and the reinforced concrete part on the shaft Based on a large number of calculation and analysis, a simplified calculation method is proposed, which provides a theoretical basis and a simple calculation method for engineering application of general stacking method.