Desk Study Tools for Upgrade of Breakwaters against Increased Loadings Caused by Climate Change

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Burcharth et al. (2014) studied different upgrade solutions for a typical shallow water revetment and found that the most economical solution was to add an extra layer of armour rocks tothe existing two layers. Because none of the existing design formulae for armour stability and overtopping cover designs with armour consisting of three layer of rocks, the related design parameters had to be estimated. R ecently performed physical model tests presented in Eldrup et al. (2019) provide information of the performance of three layer rock armour and formed the basis for determination of the related notional permeability factor in the Van der Meer (1988) rock armour stability formula. The application of this formula and the Eldrup and Lykke Andersen (2018) overtopping formula is discussed in relation to armour consisting of two and three layers of rocks. The study shows that upgrading from two to three rock armour is a method to increase the stability and reduce the wave overtopping of existing structures.
Original languageEnglish
Title of host publicationThe 8th International Coastal Structures Conference 2019
EditorsNils Goseberg, Torsten Schlurmann
Place of PublicationKarlsruhe
PublisherBundesanstalt für Wasserbau
Publication date2019
ISBN (Electronic)978-3-939230-64-9
Publication statusPublished - 2019
EventCoastal Structures Conference 2019 - Coastal Research Center (Forschungszentrum Küste, FZK), Hannover, Germany
Duration: 30 Sept 20192 Oct 2019
Conference number: 8


ConferenceCoastal Structures Conference 2019
LocationCoastal Research Center (Forschungszentrum Küste, FZK)


  • Climate changes
  • Breakwater upgrade
  • Rock armour stability
  • Wave overtopping


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