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http://dx.doi.org/10.9765/KSCOE.2019.31.6.478

Study of Stability for Armor Weight of Stand-alone Caisson at Yongsu Wave Power Plant  

Kim, Gunwoo (Department of Ocean Civil Engineering, Mokpo National Maritime University)
Publication Information
Journal of Korean Society of Coastal and Ocean Engineers / v.31, no.6, 2019 , pp. 478-484 More about this Journal
Abstract
The submarine cable for Yongsu wave power plant was cut in 2014 winter. This study investigated the probability of high-wave occurrence exceeding the 50-year return period and the underestimation of armor unit weight used to protect the cable. The observation data from KMA buoy and the hindcast wave data were reviewed to determine the return period of wave height during the winter. In order to investigate the armor unit weight of cable-protection, we calculated the required weight of armor unit using not only Design Standard for Harbor and Fishery Port, but also the previous researches for the wave with large incident angle. As a result, it appeared that the high wave exceeding the 50-year return period did not occur during the winter of 2014 and the armor unit weight of the cable protection was not sufficient to sustain the obliquely incident wave, which induced the cable protection failure.
Keywords
composite breakwater; breakwater head; wave force; return period; gabion;
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  • Reference
1 Kimura, K., Takahashi, S. and Tanimoto, K. (1994) Stability of rubble mound foundations of composite breakwaters under oblique wave attack. Proc. of 24th Coast. Engrg. Conf., ASCE, 1227-1240.
2 KORDI (2005) Report on the Deep Sea Design wave Estimation for Seas Adjacent to Korea. KORDI, BSPE95100-1735-2.
3 Ministry of Oceans and Fisheries (2014) Design Standards and Explanations for Harbor and Fishing Port.
4 Tanimoto, K., Yagyu, T. and Goda, Y. (1982) Irregular wave tests for composite breakwater foundations. Proc. of 18th Coast. Engrg. Conf., ASCE, 2144-2163.
5 Takahashi, S., Kimura, K. and Tanimoto, K. (1990) Stability of armour units of composite breakwater mound against oblique waves. Report of the Port and Harbour Research Institute, 29(2), 3-36.