Numerical Study on the Deformation Behavior of Geosynthetic-Encased Stone Columns Supporting Embankments

The method of encasing the stone column with a proper type geosynthetic material is widely used technique to provide required lateral confinement and avoid dispersion granular into soft clay. Along improved ultimate load capacity reduced settlement bulging, encasement preserves easy drainage ability columns. This paper presents finite element analysis results hypothetical embankment on soil deposit which by geotextile encased columns geogrid reinforced sand mat top. At first, numerical three dimensional (3D) model (FEM) were validated via experimental data previous field studies. Afterward, parametric studies carried out FEM considering effect thickness, stiffness reinforcement, length both horizontal vertical deformation Settlement differences between in short term long also determined. optimum values layer length, are recommended be for preliminary designs.