壁面の分割構造を模擬した帯鋼補強土壁に関する動的遠心模型実験

Abstract

In the current design method of reinforced earth wall, the mechanical role of the wall structure is considered as a simple rigid structure although the wall structure is constructed by plenty of segmental precast concrete panels. This is mainly because the flexible deformation of the reinforced earth wall due to earthquake has not been clearly explained. This consideration, in reality, is likely to spoil the safety of the external stability which inspects sliding and overturning of the reinforced earth wall . Therefore, this study conducted the dynamic centrifuge tests on the reinforced earth wall with modeling segmental wall structure. This model wall has no shear resistance and bending resistance although each wall panel itself is enough rigid to suffer no deformation due to the earth pressure. As results, even if there is no shear resistance and bending resistance in the wall structure, the wall and the backfill behave integrally except for the wall panel located at the top of the wall, which induced the sufficient stability of the reinforced earth wall.