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

Korean Society of Coastal and Ocean Engineers (한국해안·해양공학회)
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Ultimate Limit State Risk Assessment of Penta Pod Suction Bucket Support Structures for Offshore Wind Turbine due to Scour

세굴에 기인한 해상풍력터빈 펜타팟 석션버켓 지지구조물의 극한한계상태 위험도 평가

  • Kim, Young Jin (Dept. Of Ocean Science & Engineering, Kunsan National University) ;
  • Vu, Ngo Duc (Dept. Of Ocean Science & Engineering, Kunsan National University) ;
  • Kim, Dong Hyawn (School of Architecture and Coastal Construction Engineering, Kunsan National Univ.)
  • 김영진 (군산대학교 해양산업공학과) ;
  • ;
  • 김동현 (군산대학교 건축.해양건설융합공학부)
  • Received : 2021.10.21
  • Accepted : 2021.12.23
  • Published : 2021.12.31
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Abstract

The scour risk assessment was conducted for ultimate limit state of newly developed penta pod suction bucket support structures for a 5.5 MW offshore wind turbine. The hazard was found by using an empirical formula for scour depth suitable for considering marine environmental conditions such as significant wave height, significant wave period, and current velocity. The scour fragility curve was calculated by using allowable bearing capacity criteria of suction foundation. The scour risk was assessed by combining the scour hazard and the scour fragility.

5.5 MW 해상풍력터빈을 위해 새로 개발된 펜타팟 석션버켓 지지구조물의 극한한계상태 위험도 평가를 진행하였다. 유의파고, 유의파 주기, 조류속 등 해양 환경조건을 고려한 세굴확률을 위험(hazard)으로 산정하였다. 석션버켓 지지구조물 기초의 극한한계상태 파괴기준을 적용하여 세굴 깊이에 따른 취약도를 산정하였다. 극한한계상태는 기초구조물의 지지력을 이용하여 정의하였다. 해저드와 취약도를 이용하여 펜타팟 석션버켓의 위험도를 산정하였다.

Keywords

Acknowledgement

이 성과는 정부(과학기술정보통신부)의 재원으로 한국연구재단 및 한국 에너지 기술 평가원(KETEP)과 산업 통상 자원부(MOTIE)의 받아 수행된 연구임 (No. 2020R1F1A1076884, No. 20183010025300).

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