ABSTRACT
Most of seismic design codes of geogrid-reinforced structures are based on pseudo-static limit equilibrium approaches. However, in the 1995 Hyogoken-nambu Earthquake, geogrid-reinforced structures were not damaged seriously. It implies that the importance of the permanent displacement as a design criteria in the evaluation of the seismic performance of geogrid-reinforced structures. In this study, centrifuge model tests were conducted to study the dynamic behavior of geogrid-reinforced soil during earthquake. An attempt was made to discuss the effects of length and spacing of geogrids on the permanent deformation of the reinforced soil.
