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논문 기본 정보

자료유형
학술저널
저자정보
Yi, Jin-Hak (Coastal and Environmental Engineering Division, Korea Institute of Ocean Science and Technology) Kim, Sun-Bin (Coastal and Environmental Engineering Division, Korea Institute of Ocean Science and Technology) Yoon, Gil-Lim (Coastal and Environmental Engineering Division, Korea Institute of Ocean Science and Technology) Andersen, Lars Vabbersgaard (Department of Civil Engineering, Aalborg University)
저널정보
테크노프레스 Wind & structures Wind & structures 제21권 제6호
발행연도
2015.1
수록면
625 - 639 (15page)

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Monopiles have been most widely used for supporting offshore wind turbines (OWTs) in shallow water areas. However, multi-member lattice-type structures such as jackets and tripods are also considered good alternatives to monopile foundations for relatively deep water areas with depth ranging from 25-50 m owing to their technical and economic feasibility. Moreover, jacket structures have been popular in the oil and gas industry for a long time. However, several unsolved technical issues still persist in the utilization of multi-member lattice-type supporting structures for OWTs; these problems include pile-soil-interaction (PSI) effects, realization of dynamically stable designs to avoid resonances, and quick and safe installation in remote areas. In this study, the effects of PSI on the dynamic properties of bottom-fixed OWTs, including monopile-, tripod- and jacket-supported OWTs, were investigated intensively. The tower and substructure were modeled using conventional beam elements with added mass, and pile foundations were modeled with beam and nonlinear spring elements. The effects of PSI on the dynamic properties of the structure were evaluated using Monte Carlo simulation considering the load amplitude, scouring depth, and the uncertainties in soil properties.

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