A STUDY ON THE SEISMIC BEHAVIOR OF LEANING-TYPE RETAINING WALLS REINFORCED AT THE BOTTOM WITH SOIL NAILING TECHNIQUE

Abstract

 This study examined and discussed the behavior of leaning-type retaining walls, which were reinforced at the bottom with soil nailing technique, during an earthquake. Initially, numerical analyses were carried out on the seismic behavior of leaning-type retaining walls before and after reinforcement with soil nailing targeted by small-scale model experiments in a past study. Subsequently, case studies by the numerical analyses using the L2 seismic motion assumed in railway design standards in Japan and experimental studies using small-scale model experiments were conducted on the seismic behavior of leaning-type retaining walls reinforced at the bottom with soil nailing. Consequently, the deformation suppression effect of retaining walls reinforced at the bottom with soil nailing was implied. On the other hand, the importance of examining the effects of earth pressure, ground resistance, and the resistance of reinforcing bars on the deformation mechanism of the wall and the degree of damage to the reinforcing bars were considered.