题名: |
Formulating Wave Overtopping at Vertical and Sloping Structures with Shallow Foreshores Using Deep-Water Wave Characteristics |
正文语种: |
eng |
作者: |
Christopher H. Lashley;Jentsje van der Meer;Jeremy D. Bricker;Corrado Altomare;Tomohiro Suzuki;Katsuya Hirayama |
作者单位: |
Dept. of Hydraulic Engineering Delft Univ. of Tech- nology Stevinweg 1 2628 CN Delft Netherlands;Van der Meer Consulting P.O. Box 11 8490 AA Akkrum Netherlands Coastal & Urban Risk & Resilience Dept IHE Delft Westvest 7 2611 AX Delft Netherlands;Dept. of Hydraulic Engineering Delft Univ. of Technology Stevinweg 1 2628 CN Delft Netherlands Dept. of Civil and Environmental Engineering Univ. of Michigan 2350 Hayward St. Ann Arbor MI 48109-2125;Marie Curie Postdoctoral Fellow Maritime Engineering Laboratory Dept. of Civil and Environmental Engineering Universitat Politecnica de Catalunya-BarcelonaTech C/Jordi Girona 1-3 Edifici D1 Campus Nord 08034 Barcelona Spain;Flanders Hydraulics Research Berchemlei 115 2140 Ant-werp Belgium,Visiting Researcher Dept. of Hydraulic Engineering Delft Univ. of Technology Stevinweg 1 2628 CN Delft Netherlands;Wave Group Coastal and Ocean Engineering Dept. Port and Airport Research Institute 3-1-1 Nagase Yokosuka Kanagawa 239-0826 Japan |
关键词: |
Infragravity waves; Vertical wall; Emergent toe; Dike; Shallow foreshore; Wave transformation; Wave overtopping |
摘要: |
The state-of-the-art formulas for mean wave overtopping (q) assessment typically require wave conditions at the toe of the structure as input. However, for structures built either on land or in very shallow water, obtaining accurate estimates of wave height and period at the structure toe often proves difficult and requires the use of either physical modeling or high-resolution numerical wave models. Here, we follow Goda's method to establish an accurate prediction methodology for both vertical and sloping structures based entirely on deep-water characteristics-where the influence of the foreshore is captured by directly incorporating the foreshore slope and the relative water depth at the structure toe (h_(toe/)H_(m0,deep)). Findings show that q decreases exponentially with h_(toe/)H_(m0,deep) due to the decrease of the incident wave energy; however, the rate of reduction in q decreases for structures built on land or in extremely shallow water (h_(toe/)H_(m0,deep)≤0.1) due to the increased influence of wave-induced setup and infragravity waves-which act as long-period fluctuations in mean water level-generated by nonlinear wave transformation over the foreshore. |
出版年: |
2021 |
期刊名称: |
Journal of Waterway, Port, Coastal and Ocean Engineering |
卷: |
147 |
期: |
6 |