本文建立了钢筋混凝土平面应力问题的材料模型。在钢筋与混凝土理想粘结的假设下,文中根据混凝土的双轴应力试验曲线和钢筋单轴拉伸试验曲线分别建立了二维的混凝土力学模型和理想为等效钢板的分布钢筋力学模型。在此基础上本文提出了钢筋混凝土非线性有限元分析的离散化积分点法,编制了计算机程序,验证了计算模型的可靠性与精度。 This paper establishes a material model for the plane stress of reinforced concrete. Under the assumption of the ideal bond between steel and concrete, a two-dimensional concrete mechanical model and an ideal distribution steel model for the equivalent steel plate were established based on biaxial stress test curves of concrete and uniaxial tensile test curves of steel bars, respectively. On this basis, this paper proposes a discrete integration point method for nonlinear finite element analysis of reinforced concrete, and compiles a computer program to verify the reliability and accuracy of the calculation model.