Numerical analysis of a deep metro station excavation

Abstract: The finite element method is a useful tool, widely used in recent years to analyze the excavations behaviour, but the accuracy of the finite element analysis depends on the selection of appropriate constitutive models and material parameters. This paper presents the numerical analysis of a deep open excavation for a metro station in Algiers city using Plaxis software. Three models are used in this study, the Mohr Coulomb model, the hardening soil model and the hardening soil model with small-strain stiffness,to emphasize the impact of constitutive model on the ground movements. The HSS model seems to give more reasonable results of ground movements than the other models.