【摘要】 基于一种合理的钢筋和混凝土本构模型,以x,y方向的曲率和截面形心应变为参数,利用数值方法对钢筋混凝土异形柱构件进行非线性全过程分析,得到了弯矩-曲率全曲线(N-M-φ全曲线).在得到N-M-φ全曲线基础上形成钢筋混凝土异形柱非线性分析的基本方程.通过与一般数值分析方法得到的异形柱N-M-φ全曲线进行对比,两者计算结果吻合较好,但该方法概念更加清晰.该研究成果可应用于钢筋混凝土异形柱的非线性有限元全过程分析.更多还原

【Abstract】 Based on the reasonable relation between stress and strain for steel and concrete, using the curvature in the x direction, the y direction, and the strain in the sectional center of the form figure as parameters, the nonlinear analysis process was carried out in the method of numerical analysis for Reinforced Concrete(RC) special-shaped columns, and the whole curve(N-M-φ curve) of the relation between moment and curvature was obtained. The curve was consistent with the curve obtained in the normal numerical method. On the basis of the N-M-φ curve, the primary equation was achieved for the nonlinear analysis of RC special-shaped columns,and the result was also used in the whole process analysis of the nonlinear finite element for the RC special-shaped columns.更多还原