3-D Scale Model Study of Wave Run-up, Overtopping and Damage in a Rubble-Mound Breakwater Subject to Oblique Extreme Wave Conditions

João Alfredo Santos, Francisco Pedro, Mário Coimbra, Andrés Figuero, Conceição Juana Fortes, José Sande, Moritz Körner, Jeroen Van Den Bos, Bas Hofland, More Authors

Research output: Contribution to journalArticleScientificpeer-review

Abstract

A set of scale-model tests carried out to enlarge the range of wave steepness values analysed in run-up, overtopping and armour layer stability studies, focusing on oblique extreme wave conditions and on their effects on a gentler slope breakwater's trunk armour and roundhead, is presented in this paper. A stretch of a rubble mound breakwater (head and part of the adjoining trunk, with a slope of 1(V):2(H)) was built in a wave basin at the Leibniz University Hannover to assess, under extreme wave conditions (wave steepness of 0.055) with different incident wave angles (from 40° to 90°), the structure behaviour in what concerns wave run-up, wave overtopping and damage progression of the armour layer. Two types of armour elements (rock and Antifer cubes) were tested. Non-intrusive methodologies including a new application of laser scanning technique for the assessment of both armour layer damage and wave run-up and overtopping were used. It is expected that such work will contribute also with data to improve empirical formulas as well as to validate complex numerical model for wave-structure interaction.

Original languageEnglish
Pages (from-to)32-41
Number of pages10
JournalDefect and Diffusion Forum
Volume396
DOIs
Publication statusPublished - 2019

Keywords

  • 3D-Wave basin
  • Instrumentation
  • Physical modelling

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