한국지진공학회논문집 (Journal of the Earthquake Engineering Society of Korea)

  • 제17권6호
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  • Pages.257-269
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  • 2013
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  • 1226-525X(pISSN)
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  • 2234-1099(eISSN)
한국지진공학회 (Earthquake Engineering Society of Korea)
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기하 비선형과 항력 효과를 고려한 해상풍력발전기의 지진 응답해석

Earthquake Response Analysis of an Offshore Wind Turbine Considering Effects of Geometric Nonlinearity of a Structure and Drag Force of Sea Water

  • 이진호 (한국철도기술연구원 초고속자기부상철도연구단) ;
  • 배경태 (대우건설 기술연구원 토목연구팀) ;
  • 진병무 (대우건설 기술연구원 토목연구팀) ;
  • 김재관 (서울대학교 건설환경공학부)
  • Lee, Jin Ho (Korea Railroad Research Institute, Super Speed Maglev Train Research Team) ;
  • Bae, Kyung Tae (Daewoo E&C, Institute of Construction Technology, Civil Engineering Research Team) ;
  • Jin, Byeong Moo (Daewoo E&C, Institute of Construction Technology, Civil Engineering Research Team) ;
  • Kim, Jae Kwan (Seoul National University, Department of Civil and Environmental Engineering)
  • 투고 : 2013.07.10
  • 심사 : 2013.09.24
  • 발행 : 2013.11.01
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초록

In this study, the capability of an existing analysis method for the fluid-structure-soil interaction of an offshore wind turbine is expanded to account for the geometric nonlinearity and sea water drag force. The geometric stiffness is derived to take care of the large displacement due to the deformation of the tower structure and the rotation of the footing foundation utilizing linearized stability analysis theory. Linearizing the term in Morison's equation concerning the drag force, its effects are considered. The developed analysis method is applied to the earthquake response analysis of a 5 MW offshore wind turbine. Parameters which can influence dynamic behaviors of the system are identified and their significance are examined.

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참고문헌

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