Browse > Article
http://dx.doi.org/10.9765/KSCOE.2017.29.2.77

Proposal of Sliding Stability Assessment Formulas for an Interlocking Caisson Breakwater under Wave Forces  

Park, Woo-Sun (Coastal Engineering Division, Korea Institute of Ocean Science and Technology)
Won, Deokhee (Coastal Engineering Division, Korea Institute of Ocean Science and Technology)
Seo, Jihye (Coastal Engineering Division, Korea Institute of Ocean Science and Technology)
Publication Information
Journal of Korean Society of Coastal and Ocean Engineers / v.29, no.2, 2017 , pp. 77-82 More about this Journal
Abstract
Recently, the possibility of abnormal waves of which height is greater than design wave height have been increased due to the climate change, and therefore it has been urgent to secure the stability for harbor structures. As a countermeasure for improving the stability of conventional caisson breakwaters, a method has been proposed in which adjacent caissons are interlocked with each other to consecutively resist the abnormal wave forces. In order to reflect this research trend, the reduction effect of the maximum wave force resulted from introducing a long caisson has been presented in the revision to the design criteria for ports and fishing harbors and commentary. However, no method has been proposed to evaluate the stability of interlocking caisson breakwater. In this study, we consider the effect of the phase difference of the oblique incidence of the wave based on the linear wave theory and apply the Goda pressure formula for considering design wave pressure distribution in the vertical direction. Sliding stability assessment formula of an interlocking caisson breakwater is proposed for regular, irregular, and multi-directional irregular wave conditions.
Keywords
interlocking; caisson breakwater; sliding; stability; multi-directional irregular waves;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Burcharth, H.F. and Liu, Z. (1998). Force Reduction of Shortcrested Non-breaking Waves on Caissons. Final Report of MAST III/PROVERBS, Volume IIa, CH.4.3.
2 Hyundai Dvp. Company. (2009). Report of Alternative-design of Counter Facilities Construction at Yeongil Bay Port in Pohang (Stage 2-1) (in Korean).
3 Hyundai Dvp. Company. (2011). Report of Basic Design of South- Breakwater at Yeongil Bay Port in Pohang (Stage 1 on Zone 1) (in Korean).
4 Jung, J.S., Lee, C. and Cho, Y.-S. (2015). Prediction of Wave Force on a Long Structure of Semi-Infinite Breakwater Type Considering Diffraction. J. of KSCOE, 27(6), 424-433 (in Korean).
5 Lee, J.I. (2014). Case study for Breakwater Damage and Reinforcement, Proc. Kosham '14 Conf., 8 (in Korean).
6 MOF (Ministry of Oceans and Fisheries). (2015). Report of Technology R&D of Long Caisson Structure for Harbor (in Korean).
7 Park, S.H., Park, W.S. and Kim, H.S. (2011). Evaluation of Structural Behavior for Interlocking Breakwater. Proc. KAOSTS '11 Conf., 1915-1918 (in Korean).
8 Park, W.S., Seo, J.H. and Oh, S.H. (2015). Design Wave Force Distributions on Interlocking Caisson Breakwaters. Proc. KSCDP'15 Conf., 83-86 (in Korean).
9 Seo, J.H., Yi, J.H., Park, W.S. and Won, D.H. (2015). Dispersion Characteristics of Wave Forces on Interlocking Caisson Breakwaters by Cross Cables. J. of KSCOE, 27(2), 315-323 (in Korean).
10 Takahashi, S. and Shimosako, K. (1990). Reduction of wave force on a long caisson of vertical breakwater and its stability. Technical Notes No. 685, Port and Harbour Research Institute, Yokosuka, Japan (in Japanese).
11 World Economic Forum. (2017). The Global Risks Report, 12th Edition World Economic Forum, Davos-Klosters, Switzerland.
12 Goda, Y. (2010). Random Seas and Design of Maritime Structures. World Scientific, 708.