杭基礎上のケーソン岸壁の液状化対策に関する一考察

抄録

Dynamic behavior of a caisson type quay wall resting on pilefoundation against the 1995 Hyogo-ken Nanbu Earthquake was numerically evaluated by a liquefaction analysis based on an effective stress model. The effect of liquefaction countermeasures in the reclaimed land on the dynamic behavior of the caisson structure was investigated using some numerical examples. The feasibility of using non-liquefied material and light-weighted material in the reclaimed land was investigated from the viewpoint of deformation control during the earthquake motion. Further, the differences in the connection condition between the caisson structure and the pile foundation are considered in this paper. The application of non-liquefied material and light-weighted material to the reclaimed land behind the caisson structure has a significant effect on the final residual deformation of the caisson structure.