Evaluation of force exerted by tetrapods displaced by tsunami on caisson breakwater return wall

Go Hamano, Hidenori Ishii, Kotaro Iimura, Tomoyuki Takabatake, Jacob Stolle, Miguel Esteban, Tomoya Shibayama

Research output: Contribution to journalArticlepeer-review

Abstract

Tsunamis can cause large damage to breakwaters and other protection structures placed along the coastline. The strong flows generated by such waves can move the armor units of composite breakwaters, leading to large impact forces on the caissons behind them. In the present work laboratory experiments were carried out in a flume to determine the forces that can result from such impacts. Then, an empirical equation that would allow the estimation of these forces was proposed, with the aim of facilitating the construction of returning walls and parapets situated on top of caissons.

Original languageEnglish
Pages (from-to)170-181
Number of pages12
JournalCoastal Engineering Journal
Volume62
Issue number2
DOIs
Publication statusPublished - 2020 Apr 2

Keywords

  • Tsunami
  • composite breakwater
  • impact forces
  • return wall
  • tetrapod

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Modelling and Simulation
  • Ocean Engineering

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