MECHANISM OF LARGE-SIZE GRANULUR WASTE DRAGGING BY PILE DRIVING THROUGH WASTE LANDFILL

In order to use the premises of the offshore waste disposal site highly, it is necessary to construct piles into the bearing layer. In such a case, piles penetrate through impermeable layer. At that time, the pile is thought to bring the waste below the impermeable layer. In this study, the large-size granular waste in the waste disposal site was easily simulated on a flat metal plate, and the penetration characteristics of flat plate subjected to eccentric vertical load was investigated. As a result of experiments, it was confirmed that the flat plate was penetrated while rotating gradually, it was separated from the pile at shallower depth as the eccentricity of the vertical load was lager. In particular, when the flat plate was separated from the pile, it is considered that the reaction force from the ground is in a state close to the limit state. In addition, it was confirmed that when the thickness of the flat plate is large, the moment to resist the rotation of the flat inclination angle of the flat plate to the increase of the penetration amount is small.