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基于层纤维梁模型,考虑钢筋混凝土材料的非线性、采用Roufaiel三区段变刚度模型考虑梁单元两端塑性的发展,利用割线刚度法全量形式的纯牛顿-拉夫逊法进行不平衡迭代,建立平面钢筋混凝土非线性静力分析的计算格式,并利用C语言编写相应的程序,与典型算例做对比分析,论证本文模型的合理性,为分析钢筋混凝土非线性提供良好的理论分析手段。
Based on the layer fiber beam model and considering the nonlinearity of the reinforced concrete, Routiviel’s three-section variable stiffness model is adopted to consider the plasticity development at both ends of the beam element. The pure Newton-Raphson method, The calculation formula of nonlinear static analysis of plane reinforced concrete is established. The corresponding program is written in C language, and compared with the typical examples. The rationality of this model is verified and a good theoretical analysis method is provided for analyzing the nonlinearity of reinforced concrete.