基于粘塑性算法和Mohr-Coulomb准则的基坑工程三维有限元数值分析

Introduced visco-plasticity method widely spreaded overseas. Based on FEM and Mohr-Coulomb criterion developed a procedure which could stimulate the excavation process. Some problems were resolved in the research process including the effect analysis of variable system mechanics, the application of visco-plasticity method and the disposal of inflexion between destroyed plane and plastic potential surface of Mohr-coulomb model. The procedure was confirmed to be accurate. Used the reduced parameter method to analyze the slope stability, and the results were matched with Bishop and Morgenstern’s obtained by the slabbing arc method.