Model testing of countermeasures for caisson type breakwater under tsunami-induced seepage flow and overflow

Paren Mitra, Kiyonobu Kasama, Yasyuki Nakagawa, Kouki Zen

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

Abstract

This paper presents and evaluates a new reinforcement technique, based on the use of rubber sheets and Permex blocks to negate the effects of tsunami-induced instabilities (seepage flow and scouring) on a caisson type composite breakwater. In this study, a series of hydraulic model tests (on a 1/100 scale prototype) were performed and the effectiveness of the countermeasures was evaluated based on the displacement of the caisson, mapping the seepage flow pattern within the mound and calculating the stable weight of the mound. Results obtained from this study verified that the proposed countermeasures significantly improved the overall stability of the breakwater.

Original languageEnglish
Title of host publicationProceedings of the 28th International Ocean and Polar Engineering Conference, ISOPE 2018
PublisherInternational Society of Offshore and Polar Engineers
Pages675-680
Number of pages6
ISBN (Print)9781880653876
Publication statusPublished - Jan 1 2018
Event28th International Ocean and Polar Engineering Conference, ISOPE 2018 - Sapporo, Japan
Duration: Jun 10 2018Jun 15 2018

Publication series

NameProceedings of the International Offshore and Polar Engineering Conference
Volume2018-June
ISSN (Print)1098-6189
ISSN (Electronic)1555-1792

Other

Other28th International Ocean and Polar Engineering Conference, ISOPE 2018
CountryJapan
CitySapporo
Period6/10/186/15/18

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Ocean Engineering
  • Mechanical Engineering

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  • Cite this

    Mitra, P., Kasama, K., Nakagawa, Y., & Zen, K. (2018). Model testing of countermeasures for caisson type breakwater under tsunami-induced seepage flow and overflow. In Proceedings of the 28th International Ocean and Polar Engineering Conference, ISOPE 2018 (pp. 675-680). (Proceedings of the International Offshore and Polar Engineering Conference; Vol. 2018-June). International Society of Offshore and Polar Engineers.