풍력에너지 저널 (Journal of Wind Energy)

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Info. Vol.8 - No.1 (2017.06.30)
DOI kwea.2017.8.1.002
Title 지반-파일 상호작용을 고려한 PS 콘크리트 해상풍력 구조물의 거동 해석 (Behavior analysis of PS concrete offshore wind turbine structure considering soil-pile interaction)
Authors 김범준*, 플롯프라딧 파신*, 배경태**, 김유석**, 김현기***, 김기두****
Institutions * 건국대학교 사회환경플랜트공학과, ** 대우건설 기술연구원 토목연구팀, *** 가톨릭관동대학교 에너지플랜트공학과 교수, **** 건국대학교 사회환경플랜트공학과 정교수 (교신저자)
Abstract The concrete gravity base structure is not suitable for the weak soil due to heavy self weight. As an alternative, PS concrete offshore wind turbine structure supported with piles was suggested. For the analysis of structure, the environmental conditions of southwest coast in Korea and 5MW wind turbine were applied. The diffraction theory on the 3D finite element was used for wave pressure. To consider the effect of pile foundation on structure, finite element analysis was carried out with soil-pile interaction. In the result, the stresses and displacements of structure were acceptable with the criteria of offshore standard. And, piles had the enough pullout and bearing capacities to endure loads on piles. To evaluate the resonance behavior of the structure, the natural frequency analysis was implemented. As a result, the suggested structure has no resonance and has a stable dynamic characteristic. Thus, it is concluded that the suggested structure can be applied for weak soil, and it is expected to be the solution for offshore wind farm in Korea.
Keyword Soil-pile interaction (지반-파일 상호작용), Behavior analysis (거동 해석), PS concrete offshore wind turbine structure (프리스트레스트 콘크리트 해상풍력발전 구조물)
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