Pushover 해석을 이용한 5MW급 해상풍력터빈의 지진취약도 KCI

Title
Pushover 해석을 이용한 5MW급 해상풍력터빈의 지진취약도
Alternative Title
Seismic Fragility for 5MW Offshore Wind Turbine using Pushover Analysis
Author(s)
이상근; 김동현; 윤길림
KIOST Author(s)
Yoon, Gil Lim(윤길림)
Publication Year
2013-08
Abstract
Seismic fragility curves for an offshore wind-turbine structure were obtained. The dynamic response of an offshore wind turbine was analyzed by considering the nonlinear behavior of layered soil and the added mass effect due to seawater. A pile-soil interaction effect was considered by using nonlinear p-y, t-z curves. In the analysis, the amplification effect of ground acceleration through layered soil was considered by applying ground motion to each of the soil layers. The vertical variation in ground motion was found by one-dimensional free-field analysis of ground soils. Fragility curves were determined by damage levels in terms of tower stress and nacelle displacements that were found from static pushover analysis of the wind-turbine structure.
ISSN
1225-0767
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/1663
Bibliographic Citation
한국해양공학회지, v.27, no.4, pp.98 - 106, 2013
Publisher
한국해양공학회
Keywords
Offshore wind turbine; 해상풍력터빈; Seismic response; 지진응답; Fragility curve; 취약도 곡선; Pushover analysis; Pushover해석; Soil structure interaction; 지반 구조물 상호작용
Type
Article
Language
Korean
Publisher
한국해양공학회
Related Researcher
Research Interests

marine geotechnics,Dredging & Soft Ground,Offshore Wind Foundations,해양지반공학,준설 및 연약지반,해상풍력기초 및 신뢰성설계

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