2021 Volume 77 Issue 2 Pages I_55-I_60
In recent years, damage caused by wave overtopping has become more frequent due to the arrival of more intense typhoons affected by global warming, and the design of offshore waves is being reviewed nationwide. As a result, the design waves are expected to become larger, and the demand for wave dissipating works is expected to increase as a countermeasure against wave overtopping. In the design of seawalls, Goda's wave overtopping discharge estimation charts are used to estimate the amount of wave overtopping, but they are interpolated even when the conditions such as the cross-sectional shape and the covering type of the wave dissipating works are different. In this study, the hydraulic model experiments of full-section covering type wave-dissipating works covered with wave-dissipating blocks up to the top of the revetment with reference to the construction cases were conducted and the wave overtopping discharge estimation charts were developed. Experiments were conducted under the same conditions for the two-layer covering type, and the effect of the covering type was quantitatively evaluated. In addition, the applicability of the proposed overtopping flow estimation equation by CLASH database and the Integrated Formula for Overtopping and Runup Model (IFORM) was confirmed.
