上限有限元定理在非均质路堤中的应用

系统地介绍了塑性极限分析上限法的原理和方法，在此基础上，将非均质路堤离散为三角形单元，在单元中构造线型速度场，根据相关联流动法则以及边界条件建立约束方程，借助线性规划法求解非均质路堤的极限承载力，并讨论了粘聚系数对非均质路堤极限承载力的影响。

Application of upper bound finite element solution in heterogeneous soil subgrade

The theory and method of the plasitc limit analysis are introduced systematically in this paper,accoding to upper bound theorem,discrelization subgrade whih heterogeneous material into triangular elements.Functions subjected to associated flow rule within element,associated flow rule along discontinuities and boundary condition are sloved by the method of mathematical programming.The solution of bearing capacity for subgrade which heterogeneous material can be obtained.And discuss the influence of the beari...