Effect of Transient Tide-Level Change on the Sliding Distance of a Breakwater Caisson during Storms

Dong-Hyawn Kim () and Jung-Wook Choi
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Dong-Hyawn Kim: Department of Coastal Construction Engineering, Kunsan National University, Gunsan 54150, Republic of Korea
Jung-Wook Choi: Korea Concrete Institute Research Center, Seoul 06130, Republic of Korea

Sustainability, 2023, vol. 15, issue 18, 1-16

Abstract: When a storm begins at low tide, the tide will increase with time. However, when a storm begins at high tide, the tide will decrease during the storm. Therefore, to achieve more accurate estimations of sliding distance, both the tide-level change and the tide level itself should be considered. In this study, a new approach to taking the change in tide level into account when calculating the sliding distance of gravity-type breakwaters during storms is proposed. Conducting the numerical analysis, we found that, when typhoons begin at low tide, the sliding distance of the breakwater increases when considering the change in tide level, and conversely, when they begin at high tide, the change in tide level results in the sliding distance being shortened. Therefore, considering the change in tide level with time can result in a more accurate and realistic estimation of the sliding distance of the breakwater being attained. This is expected to contribute greatly to the development of deformation-based performance design methods for breakwaters.

Keywords: sliding distance; breakwater; caisson; tide level; wave force; storm (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
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