Journal of Wind Energy (풍력에너지저널)

Korea Wind Energy Association (한국풍력에너지학회)
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Seismic Response Comparison of Offshore Wind Turbines as Types of Support Structures

지지구조물형식에 따른 해상풍력 발전기의 내진응답비교

  • 이계희 (목포해양대학교, 해양건설공학과) ;
  • 김성렬 (서울대학교, 건설환경공학부) ;
  • 곽대진 ((주)에드벡트)
  • Received : 2018.12.06
  • Accepted : 2019.02.15
  • Published : 2019.03.31
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Abstract

In this paper, dynamic analysis models were constructed for two types of support structures designed to support 3 MW offshore wind turbine towers, and the seismic responses of the wind towers to measured earthquakes and artificial earthquakes were estimated and compared. The two types of support structures compared are the bucket foundation and the jacket foundation, and the ground was considered by soil springs with equivalent stiffness. The mass of the in-member water and the hydrodynamic additional mass for the submerged part were also considered in the analysis model. The two types of support structures that were compared were a ground spring with a bucket foundation and a jacket foundation and the ground with equivalent stiffness. For the analysis, the mass of the adjacent fluid and the hydrodynamic additional mass for the submerged part were considered in the model. As a result, the dynamic model of the wind tower combined with the two types of support structures showed that the dynamic behavior of the superstructure dominates the overall behavior, and the influence of adjacent fluids can be neglected.

Keywords

Acknowledgement

이 논문은 2017년 대한민국 교육부와 한국연구재단의 지원을 받아 수행된 연구임. (2017R1D1A1B03030253)

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