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软黏土存在黏滞和固结作用的时效性,同时还存在水分作用的耦合效应。为研究水分含量对软黏土地基效应的影响,根据多孔介质理论结合罚参数法和Galerkin加权残值法,在多孔介质中引入了弹黏塑性力学效应,推导了软黏土地基的固液两相多孔介质模型和控制场方程,建立了有限元计算模型,给出了求解算法并编制了有限元程序。算例对比分析表明,该程序能够有效模拟软黏性土地基的力学响应。
Soft clay has the effect of viscosity and consolidation of the timeliness, but also exist the coupling effect of water. In order to study the influence of moisture content on soft clay foundation effect, according to the theory of porous media combined with penalty parameter method and Galerkin weighted residual method, the visco-elastic plastic effect is introduced in porous media, and the solid-liquid two-phase porous Medium model and control field equation, a finite element calculation model is established, a solution algorithm and a finite element program are given. The comparative analysis of the example shows that the program can effectively simulate the mechanical response of soft clay soil foundation.