Characteristics of Sea Ice floes Run-up caused by Tsunami Considering Ice Jams and Ice Pile-ups around Structures

摘要

We performed model experiments on the inundation flow of tsunamiswith ice floes. After the collision force imparted by the ice floes acts onstructures, the tsunami flow is dammed by the formation of ice jamsbetween the structures, and a large static force also acts on thestructures because of the water level rise in front of the structures andbecause of hydrostatic pressure between the structures due to the icejam,and this steady state remains for some time. We developed asimple theoretical model for estimating the water depth and the tsunamiforce, and we verified the validity of the model.