The Effect of Geo-Grid Plates on Vertical Displacement and Shearing Force on Foundation Using Finite Element Method and Two-Dimensional PLAXIS Software

Geo-synthetics are made from polymers used to stabilize and improve soil behaviors. Nowadays, geo-grids are widely used in geotechnical engineering applications. In the present study, a surface foundation located on three different soil layers under a uniform load was modeled and analyzed using finite element method under specified acceleration. The intermediate soil profile consisted of loose clay reinforced using two types of geo-grids with different distances. The results showed that by increasing vertical distance between the geo-grid layers, the vertical displacement, axial force, shear force and flexural anchor applied to the foundation also increased. Furthermore, in the case of geo-grid layer positioned at a depth of 5m or more, the shear force and flexural moment increased with a steeper slope in comparison with other cases.