Abstract
To investigate the effectiveness of soil nails in repairing damaged geogrid reinforced soil walls (GRSWs), a series of model tests on GRSWs was carries out to simulate earthquake damage by the first tilting, repair with soil nails, and the second tilting to estimate seismic stability of the repaired GRSW. The results showed that the seismic resistance of the damaged GRSW was improved by adding soil nails. Effectiveness of adding soil nails in improving the seismic resistance was found to depend on the length of the soil nails and the degree of damage to the GRSW.
