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

Korean Society of Coastal and Ocean Engineers (한국해안·해양공학회)
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Effect of Skirt Length on Behavior of Suction Foundations for Offshore Wind Turbines Installed in Dense Sand Subjected to Earthquake Loadings

조밀한 모래지반에 설치된 해상풍력 석션기초의 스커트길이에 따른 지진하중시 거동특성

  • Choo, Yun Wook (Department of Civil and Environmental Engineering, Kongju National University) ;
  • Olalo, Leonardo (Department of Civil and Environmental Engineering, Kongju National University) ;
  • Bae, Kyung-Tae (Daewoo Institute of Construction Technology(DICT), DAEWOO E&C)
  • 추연욱 (국립공주대학교 건설환경공학부) ;
  • ;
  • 배경태 ((주)대우건설 기술연구원)
  • Received : 2015.10.26
  • Accepted : 2016.08.17
  • Published : 2016.08.31
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Abstract

This study aims to analyze seismic responses of suction foundations for offshore wind turbine. For this purpose, dynamic centrifuge model tests were carried out. The skirt length of the suction foundation is a critical element for bearing mechanism against environmental loads. Thus, dynamic centrifuge model tests were performed and analyzed for three suction foundation models with the ratios of skirt length to suction foundation diameter of 0.5, 0.75, and 1 installed in dense sand. As results, the acceleration amplification at the suction foundation, residual settlement, and residual tilting angle were compared.

본 연구는 해상풍력지지구조물로 적용되는 석션기초의 지진하중에 대한 동적거동 분석을 목적으로 하였다. 이를 위하여 동적원심모형실험을 수행하였다. 석션기초의 스커트길이는 외력에 대한 지지거동에 중요한 역할을 한다. 스커트길이/석션기초외경 비가 0.5, 0.75, 1의 3가지 석션기초 모형이 조밀한 모래지반에 설치된 경우에 대하여 동적원심모형실험 결과를 제시하였다. 실험결과로 스커트길이에 따른 석션기초에서의 가속도증폭특성, 잔류침하량, 잔류회전각을 비교하였다.

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References

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