한국해안·해양공학회논문집 (Journal of Korean Society of Coastal and Ocean Engineers)

  • 제32권6호
  • /
  • Pages.524-530
  • /
  • 2020
  • /
  • 1976-8192(pISSN)
  • /
  • 2288-2227(eISSN)
한국해안·해양공학회 (Korean Society of Coastal and Ocean Engineers)
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세굴을 고려한 해상풍력터빈 지지구조물 위험도 평가

Risk Assessment of Offshore Wind Turbine Support Structures Considering Scouring

  • 김영진 (군산대학교 해양산업공학과) ;
  • 이대용 (군산대학교 산학협력단) ;
  • 김동현 (군산대학교 건축.해양건설 융합공학부)
  • Kim, Young Jin (Dept. Of Ocean Science & Engineering, Kunsan National University) ;
  • Lee, Dae Yong (Industry University Cooperation, Kunsan National University) ;
  • Kim, Dong Hyawn (School of Architecture and Coastal Construction Engineering, Kunsan National Univ.)
  • 투고 : 2020.12.12
  • 심사 : 2020.12.15
  • 발행 : 2020.12.31
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초록

세굴에 의한 해상풍력터빈 지지구조물의 위험도 평가기법을 제안하였다. 제안방법은 세굴깊이별 발생확률과 세굴깊이에 따른 취약도를 이용한 위험도 평가방법이며 지진위험도 평가기법을 변형한 것이다. 세굴깊이의 확률분포는 유의파고, 유의 주기, 조류속 등 해양 환경조건을 고려하기 적합한 경험식을 이용해 산정했으며, 해상풍력터빈 지지구조물의 동적응답을 이용하여 세굴취약도 곡선을 산정하였다. 세굴깊이별 발생확률과 세굴에 의한 구조물의 세굴취약도 곡선을 결합하여 세굴위험도를 분석하였다.

The risk of offshore wind turbine support structures by scour has been proposed. The proposed utilize probabilities of scour depths and fragilities according to scour depth and a modification of a seismic risk analysis method. The probability distribution of scour depth was calculated using a equation which is suitable to consider marine environmental conditions such as significant wave height, significant period, and current velocity, and dynamic analysis was performed on an offshore wind turbine equipped with an suction bucket to find fragility. Then, the risk of offshore wind turbine support structure considering scour can be found by integrating the scour probability and the fragility.

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참고문헌

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