Abstract
Tohoku-Pacific Ocean Earthquake on March 11, 2011 caused great damage to the port on the Pacific coast in Tohoku Region. Many breakwaters were damaged by devastating tsunami, which made us reconsider tsunami resistance design for the breakwater. The idea of the “tough structure” of the breakwater is intended to make a breakwater that can withstand the large tsunami exceeding the tsunami occurring frequently (design tsunami) and would not collapse even after deformation. In this study, the restoration construction of breakwaters damaged by tsunami in the port of Tohoku region based on the idea of the tough structure is described by referring to a prior example, the disaster recovery of breakwaters in Hachinohe Port.
