Numerical analysis of the reinforced stone column by geosynthetic on stability of embankment

Abstract

One of the best improvement methods of soft soils, especially in order to increase the stability of embankments in highway, big way, rail way and soil structures is using of stone column. The stone column into soft soils improves strengthen parameters against settlement and high displacements with increasing the bearing capacity, stability and flexibility of the embankment. Also using of Geosynthetic as reinforcement can reduce destructive displacements and increases stability of the embankment which constructed over soft soil. Therefore, in this study, in addition to providing the results of numerical experiments, the influence of a reinforced stone column by Geosynthetic in compare to when an ordinary stone column is used, has been investigated. The two-dimensional dynamic finite element program (PLAXIS8.2) is used to carry out all the numerical experiments. In this study, for achieving to optimum design, with analysing of the Primary Components such as Geometric parameters, stiffness of materials, stiffness of reinforcements and shear strength of the soft soil, some useful and technical comments have been presented.