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http://dx.doi.org/10.9765/KSCOE.2020.32.1.11

Proposal of Rotating Stability Assessment Formula for an Interlocking Caisson Breakwater Subjected to Wave Forces  

Park, Woo-Sun (Coastal Development and Ocean Energy Research Center, Korea Institute of Ocean Science and Technology)
Won, Deokhee (Maritime ICT R&D Center, Korea Institute of Ocean Science and Technology)
Seo, Jihye (Maritime ICT R&D Center, Korea Institute of Ocean Science and Technology)
Lee, Byeong Wook (Coastal Development and Ocean Energy Research Center, Korea Institute of Ocean Science and Technology)
Publication Information
Journal of Korean Society of Coastal and Ocean Engineers / v.32, no.1, 2020 , pp. 11-16 More about this Journal
Abstract
The rotational stability of an interlocking caisson breakwater was studied. Using the analytical solution for the linear wave incident to the infinite breakwater, the phase difference effect of wave pressures in the direction of the breakwater baseline is considered, and Goda's wave pressure formula in the design code is adopted to consider the nonlinearity of the design wave. The rotational safety factor of the breakwater was defined as the ratio of the rotational frictional resistance moment due to caisson's own weight and the acting rotational moment due to the horizontal and vertical wave forces. An analytical solution for the rotational center point location and the minimum safety factor is presented. Stability assessment formula were proposed to be applicable to all design wave conditions used in current port and harbor structure design such as regular waves, irregular waves and multi-directional irregular waves.
Keywords
interlocking caisson; breakwater; stability; rotation; phase lag;
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