本文将在固体力学和流体力学中广泛应用的基于选择缩减积分的有限元模式引入到岩土工程有限元分析中,在一定程度上改善了土体在体积趋于不可压缩时(如在高应力水平下和不排水状态下)的应力和变形计算.选择缩减积分方法概念明确,程序编制简单,很容易将其加入到已有的有限元程序中. In this paper, the finite element model based on the selection of reduced integration, which is widely used in solid mechanics and fluid mechanics, is introduced into the finite element analysis of geotechnical engineering to improve the soil to a certain extent when the volume tends to be incompressible (such as in high stress Calculation of stress and deformation under horizontal and undrained conditions. The selection of reduced integration method is a well-defined concept and the programming is simple. It is easy to add it to existing finite element programs.