Probabilistic Assessment of Dynamic Properties of Offshore Wind Turbines Considering Soil-Pile Interaction

Yi Jin-Hak; Kim Sun-Bin; Han Taek Hee; Yoon Gil-Lim

doi:10.7734/COSEIK.2015.28.4.343

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2015 Vol.28, Issue 4 Next Page

Probabilistic Assessment of Dynamic Properties of Offshore Wind Turbines Considering Soil-Pile Interaction 지반과 말뚝의 상호작용을 고려한고정식 해상풍력터빈의 동적 특성에 대한 확률적 평가

2015. pp. 343-350

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Abstract

천해역에서의 해상풍력터빈의 기초 형식으로 모노파일, 트라이포드, 재킷 등의 고정식 기초 사이의 최적의 지지구조물 선별에 대한 논의가 세계적으로 활발하게 되어왔다. 다양한 기초 형식 가운데 어떤 기초를 최종 선택하기 위해서는 경제성과 함께 동적설계 측면에서의 검토도 필요하다. 이 연구에서는 고정식 기초를 해상풍력터빈의 기초로 적용하는 경우 전체 구조물의 고유주파수에 미치는 하중 및 지반 물성치의 불확실성의 영향을 정량적으로 검토하였다. 연구결과, 모노파일의 고유주파수의 변동이 가장 심한 것을 알 수 있었고, 따라서 모노파일 기초를 설계에 반영하는 경우에는 지반 물성치의 불확실성을 최소화시키는 것이 중요하다는 것을 알 수 있었다.

Extensive discussion on the optimal types of offshore wind turbine(OWT) among monopile, tripod and jacket in the intermediate depth of water has been actively carried out in worldwide wind turbine industry. Selecting the optimal types of OWT among several substructural types, it is required to consider the economic and technical feasibility including dynamically stable design of a wind turbine system. In this study, the effects of loading levels and uncertainties of soil properties on the natural frequency of OWT have been quantitatively investigated. In conclusion, the natural frequency of monopile-type OWTs has a significant level of uncertainty, hence it is very important to minimize the level of uncertainties in soil properties when the monopile is selected as a foundation for an OWT.

키워드

지반-말뚝 상호작용, 고유주파수, 해상풍력터빈, 모노파일, 트라이포드, 재킷

soil-pile interaction, natural frequency, offshore wind turbine, monopile, tripod, jacket

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Information

Publisher :Computational Structural Engineering Institute of Korea
Publisher(Ko) :한국전산구조공학회
Journal Title :Journal of the Computational Structural Engineering Institute of Korea
Journal Title(Ko) :한국전산구조공학회 논문집
Volume : 28
No :4
Pages :343-350
Received Date : 2015-06-08
Revised Date : 2015-07-06
Accepted Date : 2015-07-16
DOI :https://doi.org/10.7734/COSEIK.2015.28.4.343

Journal of the Computational Structural Engineering Institute of Korea ISSN:1229-3059(Print) 2287-2302(Online) 한국전산구조공학회 논문집

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