Subsidence of Rubble Stones due to Wave-Induced Seabed Liquefaction

摘要

Under the existence of momentum liquefaction of seabed due to the action of high waves, a subsidence of armor blocks and rubble stones, which weaken the protection against scouring, occurs. In the maintenance planning of the coastal structures, the prediction of the subsidence of armor blocks and rubble stones is one of important items. The key factor of the subsidence of armor blocks and rubble stones is the block-block or stone-stone interaction, while most of the previous studies have treated the subsidence of single block or stone. A behavior of rubble stones at the foot of seawall under the momentum seabed liquefaction is experimentally and numerically investigated. Especially in the numerical model, the stone-stone interactive structure of rubble stone mound is explicitly taken into account.