The influence of wave overtopping on the stability analysis of vertical breakwaters

Li Hung Tsai, Hung Chu Hsu, Cheng Jung Hsu, Meng-Syue Li

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

Abstract

The purpose of this study is to perform an analysis of the structure stability of a breakwater concerning the effect of wave overtopping. First, a COBRAS model of Taichung Harbor breakwater structure is created. Secondly, the model is verified with experimental data, and reasonable agreement is shown between the two. Finally, the breakwater stability analysis under 50 to 250-year-return-period typhoon wave conditions as well as extreme wave conditions is discussed. The result shows that the failure of sliding is more dangerous than the failure of overturning in Taichung harbor breakwater. Under the extreme wave more than 100 year-return-period, the breakwater is unstable in sliding, whereas that is safe in overturning. The influence of Wave Overtopping on the Stability Analysis is dominated by the force on rear side of caisson and the phase difference on the two ends of caisson. If the impulse force happens at the moment of the minimum of the front force, the safety factor might decrease significantly and the failure of sliding might cause breakwater damage.

Original languageEnglish
Title of host publicationProceedings of the 27th International Ocean and Polar Engineering Conference, ISOPE 2017
PublisherSociety of Petroleum Engineers
Pages1415-1420
Number of pages6
ISBN (Electronic)9781880653975
Publication statusPublished - 2017 Jan 1
Externally publishedYes
Event27th International Ocean and Polar Engineering Conference, ISOPE 2017 - San Francisco, United States
Duration: 2017 Jun 252017 Jun 30

Publication series

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

Other

Other27th International Ocean and Polar Engineering Conference, ISOPE 2017
Country/TerritoryUnited States
CitySan Francisco
Period17-06-2517-06-30

All Science Journal Classification (ASJC) codes

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

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