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本文从连续介质力学基本理论出发,建立了土体的的大变形固结方程,用加权残数法离散了控制方程,编制成二维大变形有限元分析计算程序段,使原有的CONDEP程序能考虑几何非线性问题。同时对假想地基进行了有限元计算,还比较了大变形与小变形两种理论计算的结果。
This paper starts from the basic theory of continuum mechanics, establishes the large deformation consolidation equation of soil, uses the weighted residual method to discretize the control equations, and compiles into a two-dimensional large deformation finite element analysis and calculation program segment to make the original CONDEP program. Can consider geometric nonlinear problems. At the same time, the finite element calculation was performed on the imaginary ground, and the results of two theoretical calculations of large deformation and small deformation were also compared.