ABSTRACT
The seismic response of geogrid-reinforced soil (GRS) walls is a complex and multifaceted issue that requires thorough investigation. In static conditions, the conventional design approach ensures the stability of the GRS wall by considering various failure modes and achieving an adequate safety factor. However, this traditional static stability analysis is insufficient when addressing seismic loading conditions, therefore necessitating a different approach to design by incorporating the additional lateral thrust from earthquake force. This study examines the response of GRS wall subjected to pseudo-static seismic loading by employing numerical analysis. A series of numerical analyses were performed to study the influence of the horizontal seismic coefficient on the GRS wall’s performance. Results indicate that an increase in the seismic coefficient reduces the stability of the wall, as evidenced by higher lateral deformation of the facing panels and surface settlements. An increase in the seismic coefficient leads to rotation of the failure plane, which reduces the anchored length of the reinforcement, ultimately reducing the stability of the wall.
