Hydraulic Response of Caisson Breakwaters in Multidirectional Breaking and Non-Breaking Waves

J. Grønbech, Jens Peter Kofoed, Tue Hald, H. F. Burcharth, Peter Frigaard

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Abstract

The present paper concerns the results and findings of a physical study on wave impacts on vertical caisson breakwaters situated in irregular, multidirectional breaking seas. The study has taken place as part of the framework programme "Dynamic of Structures" financially supported by the Danish Technical Research Council, during the period of January '97 to December '97. The tests were carried out in the 3D wave basin at the Hydraulics and Coastal Engineering Laboratory, Aalborg University. The objective of the study was to asses the effects of wave obliquity and multidirectionality on the wave induced loading and overtopping on caisson breakwaters situated in breaking seas. Regarding the wave forces only minor differences between breaking and non breaking waves in deep water were observed, and it was found that the prediction formula of Goda also seems to apply well for multidirectionally breaking waves at deep water. The study on wave overtopping showed that the 3D wave overtopping formula suggested by Franco et al., 1995b, predicts the wave overtopping reasonable well for both non breaking and breaking waves at deep water.
Original languageEnglish
Title of host publicationDynamics of Structures 1993-1997 : description of the projects in the research programme
Number of pages13
Place of PublicationAalborg
PublisherDept. of Building Technology and Structural Engineering, Aalborg University
Publication date1998
Pages103-115
ChapterProject C.2
Publication statusPublished - 1998
SeriesR / Institut for Bygningsteknik
NumberR9808
ISSN1395-7953

Keywords

  • Breaking Waves
  • Non-Breaking Waves
  • Caisson Breakwaters
  • Wave Overtopping

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