Deformation analysis of the cantilever wall interacted with backfill and in-situ sandy soils modelled using Hardening Soil model

Abstract

     Deformation analysis of cantilever wall was implemented by using finite element method for various cases of wall dimensions, soil models, and surcharges. The simulation results showed that when the wall height increased, the extreme total displacement increased, and the total factor of safety decreased. In each case of dimension, the Hardening Soil model yielded the maximum value of extreme total displacment, while both linear elastic and Mohr-Coulomb models yielded smaller and similar values. When the height increased, the wall tended to rotate to the backfill soil when applying both linear elastic and Mohr-Coulomb models, while the wall reversed the rotation direction from backfill soil to the front face at H=9m when applying the Hardening Soil model. Such differencies could be due to the stress state dependencies of deformation properties of sand were considered in the Hardening Soil model.