Abstract
This paper describes results of centrifuge model tests on an abutment and its numerical analyses installed with three types of countermeasures, sheet-pile on supported ground, nailing on backfill and sheet-pile together with nailing. Centrifuge model tests with similitude of 1/50 and its numerical analyses are carried out. It is concluded that the effectiveness of coutemeasures in turn is sheet-pile together with nailing, sheet-pile and nailing based on the residual movement of abutment and residual settlement of backfill. The required reinforcing force for nailing is rationally determined combined with the relationships between reinforcing force mobilized and residual settlement of backfill.
