한국해양공학회지 (Journal of Ocean Engineering and Technology)

  • 제38권2호
  • /
  • Pages.74-85
  • /
  • 2024
  • /
  • 1225-0767(pISSN)
  • /
  • 2287-6715(eISSN)
한국해양공학회 (Korean Society of Ocean Engineers)
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Foundation Types of Fixed Offshore Wind Turbine

  • Yun Jae Kim (Department of Mechanical System Engineering, Gyeongsang National University) ;
  • Jin-wook Choe (Power Cable Research Center, Korea Electrotechnology Research Institute) ;
  • Jinseok Lim (Power Cable Research Center, Korea Electrotechnology Research Institute) ;
  • Sung Woong Choi (Department of Mechanical System Engineering, Gyeongsang National University)
  • 투고 : 2023.12.05
  • 심사 : 2024.02.27
  • 발행 : 2024.04.30
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초록

Offshore wind turbines are supported by various foundations, each with its considerations in design and construction. Gravity, monopile, and suction bucket foundations encounter geotechnical issues, while jacket and tripod foundations face fatigue problems. Considering this, a gravity foundation based on a steel skirt was developed, and a monopile foundation was analyzed for Pile-Soil Interaction using the p-y curve and 3D finite element method (3D FEM). In addition, for suction bucket foundations, the effects of lateral and vertical loads were analyzed using 3D FEM and centrifuge tests. Fatigue analysis for jacket and tripod foundations was conducted using a hotspot stress approach. Some hybrid foundations and shape optimization techniques that change the shape to complement the problems of each foundation described above were assessed. Hybrid foundations could increase lateral resistance compared to existing foundations because of the combined appendages, and optimization techniques could reduce costs by maximizing the efficiency of the structure or by reducing costs and weight. This paper presents the characteristics and research directions of the foundation through various studies on the foundation. In addition, the optimal design method is presented by explaining the problems of the foundation and suggesting ways to supplement them.

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과제정보

This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korean government (MOTIE) (20213000000020, Development of core equipment and evaluation technology for construction of subsea power grid for offshore wind farm)

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