Scour Risk Assessment of Offshore Wind Turbine with Suction Bucket Foundation

Kim, D.-H. and Kim, Y.-J., 2020. Scour risk assessment of offshore wind turbine suction bucket foundation. In: Malvárez, G. and Navas, F. (eds.), Global Coastal Issues of 2020. Journal of Coastal Research, Special Issue No. 95, pp. 237–241. Coconut Creek (Florida), ISSN 0749-0208. Risk assessment pr...

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Bibliographic Details
Published in:Journal of coastal research 2020-05, Vol.95 (sp1), p.237-241
Main Authors: Kim, Dong-Hyawn, kim, Young-Jin
Format: Article
Language:English
Subjects:
Coastal inlets
Coastal research
Depth
Dynamic analysis
ENGINEERING
Fragility
Offshore
Offshore structures
Offshore wind turbine(OWT)
Probability theory
Risk assessment
Scour
scour fragility
scour hazard
scour risk
Scouring
Significant wave height
Statistical analysis
Suction
suction bucket
Turbine engines
Turbines
Wave height
Wind farms
Wind power
Wind turbines
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Summary:Kim, D.-H. and Kim, Y.-J., 2020. Scour risk assessment of offshore wind turbine suction bucket foundation. In: Malvárez, G. and Navas, F. (eds.), Global Coastal Issues of 2020. Journal of Coastal Research, Special Issue No. 95, pp. 237–241. Coconut Creek (Florida), ISSN 0749-0208. Risk assessment procedure for offshore wind turbine support structures induced by scour was proposed. Probabilistic distribution of scour depth, a hazard curve, was calculated by using the C.S.U formula with parametric uncertainties. To get fragility curves of support structure, dynamic analysis was done with a certain assumed scour depth, given significant wave height and return period. Scour induced failure probability of support structure for a given wave height then can be found by integrating the multiplication of hazard and fragility. It is repeated for possible range of scour depths to form a risk curve. In numerical example, scour induced structural risk of 3MW offshore wind turbine supported by suction bucket foundation is evaluated. The proposed approach can be used in determining wind farm location where scour is significant.
ISSN:0749-0208
1551-5036
DOI:10.2112/SI95-046.1