Document Type
Journal Article
Publication Title
Coastal Engineering
Volume
188
Publisher
Elsevier
School
School of Engineering
RAS ID
64751
Funders
Griffith University
Abstract
During storms, ensuring the protection of people, vehicles and infrastructure on the crest of coastal structures from wave overtopping hazards is crucial. The thickness of the wave overtopping layer is a key variable used for assessing safety and maintaining a secure design. Traditionally, this parameter is associated with the height difference between the fictitious wave run-up level exceeded by 2% of waves and the crest freeboard of coastal structures. This study aims to investigate the wave overtopping layer thickness on the crest of rubble mound seawalls. To achieve this, a series of 125 small-scale 2D physical model tests were conducted on a two-layer rubble mound seawall with an impermeable core and slopes of 1:1.5 and 1:2. The obtained results indicated that the existing empirical formulas, originally developed for dikes, underestimate the overtopping layer thickness on the studied seawall. Therefore, modifications were made to the formulas found in the literature specifically tailored for rubble mound seawalls. The newly proposed formulas for estimating overtopping layer thickness at both the seaward edge and the middle of the crest showed improvements compared to the existing formulas.
DOI
10.1016/j.coastaleng.2023.104441
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Comments
Koosheh, A., Etemad-Shahidi, A., Cartwright, N., Tomlinson, R., & van Gent, M. R. A. (2024). Wave overtopping layer thickness on the crest of rubble mound seawalls. Coastal Engineering, 188, article 104441. https://doi.org/10.1016/j.coastaleng.2023.104441