Validity of simplified Analysis of Stability of Caison Breakwaters on Rubble Foundation Exposed to Impulsive Loads

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Abstract

Wave slamming on vertical breakwaters cause a sudden, impulsive load that may cause a caisson to slide on its foundation. Alternatively, geotechnical failure may occur in the subsoil. This paper investigates whether simple analytical solutions, accounting only for the sliding along the caisson–foundation interface, can be utilized to properly determine the deformations of the breakwater. Comparisons are made with results obtained by numerical models that include the material response of the soil. Firstly, a computational model is suggested that assumes a fully drained behavior of the subsoil. Secondly, a fully coupled dynamic pore-water-flow model is introduced. The computational examples clearly demonstrate that the deformations of the soil as well as the pore pressures must be accounted for in order to get a reliable prediction of caisson deformations during wave impact.
Original languageEnglish
Title of host publicationCoastal Engineering 2010 : Proceedings of the 32nd International Conference on Coastal Engineering
EditorsJane McKee Smith, Patrick Lynett
Number of pages14
PublisherCoastal Engineering Research Council
Publication date2011
Publication statusPublished - 2011
Event32nd International Conference on Coastal Engineering ICCE 2010 - Shanghai, China
Duration: 30 Jun 20105 Jul 2010

Conference

Conference32nd International Conference on Coastal Engineering ICCE 2010
CountryChina
CityShanghai
Period30/06/201005/07/2010
SeriesProceedings of the International Conference on Coastal Engineering
Number32

Bibliographical note

Paper No. 239. Published at http://journals.tdl.org/ICCE/issue/view/154

Keywords

  • Caisson Breakwaters
  • Rubble Foundations
  • FLAC
  • Soil-Water Model

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    Andersen, L., Burcharth, H. F., & Andersen, T. L. (2011). Validity of simplified Analysis of Stability of Caison Breakwaters on Rubble Foundation Exposed to Impulsive Loads. In J. M. Smith, & P. Lynett (Eds.), Coastal Engineering 2010: Proceedings of the 32nd International Conference on Coastal Engineering Coastal Engineering Research Council. Proceedings of the International Conference on Coastal Engineering, No. 32