Abstract
A series of tilting tests, shaking table tests with regular wave and irregular wave were carried out to investigate the seismic stability of the reinforced-soil retaining and conventional retaining walls. The seismic resistance of reinforced-soil retaining wall models was higher than that of the conventional retaining wall models which agree with the damage observed after Hyogoken-Nanbu earthquake. The experiments revealed that by extending the upper reinforced material, the seismic stability of the reinforced-soil retaining wall could be improved more effectively than by extending all reinforced material. The reinforced area showed a shear deformation and the failure plane did not penetrate into the reinforced area which is not considered in the current earthquake resistance designing procedure.
