Displacement analysis of a geogrid-reinforced retaining wall with modular precast concrete facing

Abstract

Reinforced earth retaining walls are widely used in transportation projects, such as embankments, bridge access roads, and bridge abutments. When the wall height is large, the weight of the embankment soil and vehicle loads can cause large wall displacements, thereby affecting the serviceability of the wall system. Although many retaining wall projects use wall-facing structures assembled from precast concrete components, most domestic studies have focused on continuous reinforced concrete wall-facing structures. Therefore, to understand the displacement behavior of reinforced retaining walls when the wall height is large, we investigated the displacement behavior of an earth retaining wall in the My Phuoc-Tan Van overpass project, Binh Duong Province. This study uses a finite element simulation that considers the nonlinear behavior of backfill soil, foundation soil, geotextiles, and the interaction between precast concrete units.