Tsunami Over Composite Breakwater
This paper presents some recent research advances in tsunami-seabed-structure interaction following the 2011 Tohoku Earthquake Tsunami, Japan. Role of overflow and seepage coupling is highlighted, based on the effect of tsunami-induced seepage on piping/boiling, erosion and bearing capacity decrease and failure of the rubble/seabed foundation. The use of the geotechnical centrifuge and a large-scale hydro flume for the modelling of tsunami-seabed-structure interaction is also discussed and compared leading to the stability assessment for the design of tsunami-resistant structures. Overall, the present findings elucidate the crucial role of overflow/seepage coupling in tsunami-seabed-structure interaction, warranting an enhanced disaster resilience.