2022 Volume 37 Pages 77-84
According to a dynamic centrifugal model test of an abutment with EPS backfill, it has been reported a large force caused by collision of slabs acts on the abutment during an earthquake. This report presents the results of a 3-dimensional FEM analysis to confirm this phenomenon and to evaluate the effect of the force on the abutment. As a result, it was confirmed: the force acting on the abutment by the slabs is generated when the inertial force is directed to the back of the abutment; the behavior is similar to that of the past test; the effect of the action on the abutment was greater due to the inertial force than the earth pressure; and replacing the slabs with EPS partly is effective in mitigating the force acting on the abutment.
