TY - JOUR
T1 - Wave overtopping layer thickness on the crest of rubble mound seawalls
AU - Koosheh, Ali
AU - Etemad-Shahidi, Amir
AU - Cartwright, Nick
AU - Tomlinson, Rodger
AU - van Gent, Marcel R.A.
PY - 2023
Y1 - 2023
N2 - 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.
AB - 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.
KW - Overtopping layer thickness
KW - Rubble mound seawalls
KW - Wave overtopping
UR - http://www.scopus.com/inward/record.url?scp=85179890275&partnerID=8YFLogxK
U2 - 10.1016/j.coastaleng.2023.104441
DO - 10.1016/j.coastaleng.2023.104441
M3 - Article
AN - SCOPUS:85179890275
SN - 0378-3839
VL - 188
JO - Coastal Engineering
JF - Coastal Engineering
M1 - 104441
ER -