（1 辽东学院 丹东 118003；2 大连理工大学 116023）
【提要】 根据截面力的平衡和变形协调原理,采用数值积分方法,编写了计算程序,计算各种参数下圆（环）形截面柱大小偏心受压的轴压比限值，分析了各种参数对轴压比限值的影响，回归出圆（环）形柱轴压比限值的简化公式。经算例验证，简化公式与数值积分给出的结果符合较好。
【关键词】 钢筋混凝土柱 圆形截面 环形截面 轴压比限值 M-N相互作用曲线
Simple Computational Method of Limited Value of Axial Compression Ratio for Reinforced Concrete Circular and Ring Columns/Yu Junrong1, Huang Chengkui2 (1 Eastern Liaoning University, Dandong 118003, China; 2 Dalian University of Technology, Dalian 116023, China)
Abstract:Based on the principles of force balance and deformation harmony, a numerical in
tegral  program was compiled for the reinforced concrete columns with circular and ring sections.The limited values of axial compression ratio with the different parameters under the eccentric compression were calculated. The simple computational formulas for limited values circular and ring columns were regressed. The examples show that the results calculated by the simple computational formulas accord with those calculated by the numerical integral method.
Keywords:RC columns； circular section； ring section； limited value; axial compression ratio； M-Ninteractive curve