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利用板的屈服线理论，采用有限元分析方法，把钢筋混凝土板简化成以增量形式表达的弹性正交各向异性板，建立起板非线性有限元分析的数学模型和计算公式，给出材料的力学表达式和板的弯矩-曲率关系。
Using the yield line theory of the plate, using the finite element analysis method, the reinforced concrete slab is reduced to an elastic orthotropic plate expressed in increments, and the mathematical model and calculation formula for the nonlinear finite element analysis of the slab are established. The mechanical expression of the material and the bending moment-curvature relationship of the plate.