Reinforcement mechanism of a gravity-type breakwater with steel walls

Shunsuke Moriyasu, Yoshiaki Kikuchi, Shohei Kawabe, Ryuta Tanaka, Shin Oikawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

"Persistence" is needed for the breakwaters, since the coastal areas of Tohoku have been extensive damaged by the tsunami caused by the Great East Japan Earthquake (Mw9.0). To achieve the persistence, the authors propose a new reinforcement method in which a steel pipe pile wall is placed behind a caisson and the space between the caisson and wall is filled with rubble. By the experiment and FEM, the proposed method shows the unique persistent feature that the resistance increases with increasing caisson displacement, because the steel pipe pile wall transfers tsunami force from a caisson to a seabed layer and utilize the soil resistance of the seabed layer.

Original languageEnglish
Title of host publicationIABSE Conference, Nara 2015
Subtitle of host publicationElegance in Structures - Report
PublisherInternational Association for Bridge and Structural Engineering (IABSE)
Pages446-447
Number of pages2
ISBN (Electronic)9783857481383
Publication statusPublished - 1 Jan 2015
EventIABSE Conference, Nara 2015: Elegance in Structures - Nara, Japan
Duration: 13 May 201515 May 2015

Publication series

NameIABSE Conference, Nara 2015: Elegance in Structures - Report

Conference

ConferenceIABSE Conference, Nara 2015: Elegance in Structures
CountryJapan
CityNara
Period13/05/1515/05/15

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Keywords

  • Breakwater
  • Reinforcement structure
  • Steel pipe pile
  • Tsunami

Cite this

Moriyasu, S., Kikuchi, Y., Kawabe, S., Tanaka, R., & Oikawa, S. (2015). Reinforcement mechanism of a gravity-type breakwater with steel walls. In IABSE Conference, Nara 2015: Elegance in Structures - Report (pp. 446-447). (IABSE Conference, Nara 2015: Elegance in Structures - Report). International Association for Bridge and Structural Engineering (IABSE).