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

  • 제33권5호
  • /
  • Pages.195-202
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  • 2021
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  • 1976-8192(pISSN)
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  • 2288-2227(eISSN)
한국해안·해양공학회 (Korean Society of Coastal and Ocean Engineers)
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사질토 지반에 위치한 해상풍력발전기 석션기초의 복합하중에 대한 안전성 평가

Safety Evaluation of the Combined Load for Offshore Wind Turbine Suction Foundation Installed on Sandy Soil

  • 박정선 (한국수력원자력(주) 중앙연구원)
  • Park, Jeong Seon (Korea Hydro & Nuclear Power Co., LTD., Central Research Institute)
  • 투고 : 2021.09.23
  • 심사 : 2021.10.18
  • 발행 : 2021.10.31
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초록

해상풍력발전기는 바람 및 파도, 구조물 자중에 의해 수직-수평-모멘트의 복합하중을 받는다. 본 연구에서는 유한요소해석으로 사질토 지반에 설치된 해상풍력발전기 석션기초의 복합하중에 대한 지지력을 산정하였다. 또한 복합하중이 작용하는 중의 석션기초 주변 지반의 응력상태를 상세하게 분석하였다. 최종적으로 유한요소해석 결과를 토대로 수평 및 모멘트 지지력 산정식과 복합하중에 대한 안전성을 평가하는 지지력 포락선 식을 제안하였다.

Offshore wind turbine (OWT) receive a combined vertical-horizontal- moment load by wind, waves, and the structure's own weight. In this study, the bearing capacity for the combined load of the suction foundation of OWT installed on the sandy soil was calculated by finite element analysis. In addition, the stress state of the soil around the suction foundation was analyzed in detail under the condition that a combined load was applied. Based on the results of the analyses, new equations are proposed to calculate the horizontal and moment bearing capacities as well as to define the capacity envelopes under general combined loads.

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참고문헌

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