Journal of Wind Energy (풍력에너지저널)

Korea Wind Energy Association (한국풍력에너지학회)
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Study on Numerical Analysis for Penetration Performance Evaluation of Doughnut-Type Suction Foundation in Sand Layer

모래지반에서 도넛형 석션기초의 관입 성능 평가를 위한 수치해석 기법에 대한 연구

  • 박해용 (한국해양과학기술원, 해양ICT융합연구센터) ;
  • 권오순 (한국해양과학기술원, 해양ICT융합연구센터) ;
  • 한인숙 (서울기술연구원, 연구기획실) ;
  • 강현 (한국해양과학기술원, 해양ICT융합연구센터)
  • Received : 2022.09.14
  • Accepted : 2022.11.24
  • Published : 2022.12.30
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Abstract

It is difficult to control differential settlement and long-term settlement on soft ground with the template used in the pre-filing method of offshore wind power. In this study, the template adopted a suction foundation with high utility on soft ground. To analyze the penetration performance of the doughnut-type suction foundation, step-by-step numerical analysis was applied by calculating the minimum suction pressure needed for ground penetration at that depth. Scale model tests were performed and compared with the numerical analysis results. The ratio of the inside diameter compared to the outside diameter is higher, and penetration by suction was more advantageous than push-in load penetration. The step-by-step numerical analysis method showed an error within 2 % compared to the model tests, so the numerical analysis method confirmed results that the penetration performance of the doughnut-type suction foundation is valid.

Keywords

Acknowledgement

본 연구는 산업통상자원부(MOTIE)와 한국에너지기술평가원(KETEP)의 지원을 받아 수행한 연구 과제입니다.(No.20213030020110)

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