Experimental Study on Reinforcement Method of Levees by Sheet-pile

Abstract

Japan suffered from severe damage to levees, such as cracking and subsidence due to earthquake-induced liquefaction, infiltration failure and flood hazard due to intensive downpour. Currently, as one of major countermeasures for levees against these disasters, installation of sheet-pile, or soil improvement is executed at the foot of the embankment. However, these countermeasures were occasionally found to be insufficient. Therefore, we studied the applicability of a new type of countermeasure using a hybrid structure of soil and sheet-pile, which is installed at the top or shoulder of the embankment. In this paper, by conducting a series of model tests, we could confirm the effectiveness of the proposed countermeasure against various disasters.