ABSTRACT
Plaxis 2D was used to investigate the deformational response of a geosynthetic reinforced soil – integral bridge system with three different geogrid arrangements. The deformational response was found to be independent of the length of geogrid, independent of having secondary geogrid layers directly beneath the bank seat and also independent of vertical geogrid spacing near the base of the wall. The response was found to be only marginally dependent on the direction that the horizontal load was first applied. Applying the horizontal load towards the abutment resulted in inward movement of the wall face and the greatest rotation of the bank seat. Applying the horizontal load away from the abutment resulted in outward movement of the wall face and a slight reduction in the rotation of the bank seat in all models.
