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J. Mar. Sci. Eng. 2018, 6(4), 143;

Hydraulic Stability of the Armor Layer of Overtopped Breakwaters

Laboratory of Ports and Coasts, Institute of Transport and Territory, Universitat Politècnica de València, 46022 Valencia, Spain
Author to whom correspondence should be addressed.
Received: 18 October 2018 / Revised: 23 November 2018 / Accepted: 23 November 2018 / Published: 27 November 2018
(This article belongs to the Special Issue Selected Papers from Coastlab18 Conference)
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Mound breakwaters with significant overtopping rates in depth-limited conditions are common in practice due to social concern about the visual impact of coastal structures and sea level rise due to climatic change. For overtopped mound breakwaters, the highest waves pass over the crest producing armor damage, not only to the front slope, but also to the crest and the rear slope. To guarantee the breakwater stability, it is necessary to limit the armor damage in the three parts of the structure: Front slope, crest, and rear slope. This paper describes the hydraulic stability of the armor layer of medium and low-crested structures in wave breaking conditions. Small-scale physical model tests were carried out with different relative crest freeboards and three armor units: Rocks, cubes, and Cubipods. The armor damage progression in the front slope, crest, and rear slope was analyzed using the Virtual Net method to consider the heterogeneous packing and porosity evolution along the armor slope. A comparison is provided between the hydraulic stability of the different armors and their relationship with the measured overtopping volumes. View Full-Text
Keywords: hydraulic stability; breaking wave conditions; low-crested structures; mound breakwaters; armor layer hydraulic stability; breaking wave conditions; low-crested structures; mound breakwaters; armor layer

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Argente, G.; Gómez-Martín, M.E.; Medina, J.R. Hydraulic Stability of the Armor Layer of Overtopped Breakwaters. J. Mar. Sci. Eng. 2018, 6, 143.

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