Comparison of the Results from Analysis of Nonlinear Homogeneous and Nonlinear Inhomogeneous Half-Space

Inhomogeneous half-space was used for the determination of the interaction of steel-fibre reinforced concrete foundation slab and subsoil in an analysis based on the finite element method. Inhomogeneous half-space aptly describes the stress-strain relationship in the subsoil. The soil is a heterogeneous substance. The Drucker-Prager material model was used for nonlinear analyses. Two sets of FEM analyses were performed. Nonlinear elastic isotropic homogeneous half-space was used for the first set of FEM analysis, and a nonlinear elastic isotropic inhomogeneous half-space was used for the second set. The parametric study shows a comparison of resulting deformations obtained by analysis using a homogeneous and an inhomogeneous half-space.