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http://dx.doi.org/10.5574/KSOE.2013.27.4.098

Seismic Fragility for 5MW Offshore Wind Turbine using Pushover Analysis  

Lee, Sang-Geun (Deptartment of Ocean Science and Engineering, Kunsan National University)
Kim, Dong-Hyawn (Deptartment of Coastal Construction Engineering, Kunsan National University)
Yoon, Gil-Lim (Coastal Engineering and Ocean Energy Research Department, KORDI)
Publication Information
Journal of Ocean Engineering and Technology / v.27, no.4, 2013 , pp. 98-106 More about this Journal
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.
Keywords
Offshore wind turbine; Seismic response; Fragility curve; Pushover analysis; Soil structure interaction;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Kim, S.H., Kim, D.K., 2005. Probabilistic Seismic Hazard Analysis of Caisson-Type Breakwaters, Journal of Ocean Engineering and Technology, 19(1), 26-32.   과학기술학회마을
2 ANSYS, Inc., 2009. ANSYS User's Manual, 12.0.
3 American Petroleum Institute(API), 2007. Recommended Practice for Planning, Design and Constructing Fixed Offshore Platforms-Working Stress Design.
4 Chopra, A.K., Goyal, A., 1991. Simplified Earthquake Analysis of Intake-Outlet Towers. Journal of Structural Engineering 117(3), 767-788.   DOI
5 Jonkman, J., Butterfield, S., Musial, W., and Scoot, G., 2009. Definition of a 5-MW Reference Wind Turbine for Offshore System Development. NREL/TP-500-38060, NREL
6 Jonkman, J., Musial, W., 2010. Offshore Code Comparison Collaboration (OC3) for IEA Task 23 Offshore Wind Technology and Deployment, NREL/TP-500-48191, NREL.
7 Shinozuka, M., Feng, M.Q., Lee, J., Naganuma, T., 2000. Statistical analysis of fragility curves. Journal of Engineering Mechanics, 126(12), 1224-1231.   DOI   ScienceOn
8 Berkeley Univ. of California, Pacific Earthquake Engineering Research Center (PEER). [Online] Available at: [Accessed 19 Mar. 2012]
9 Ministry of Oceans and Fisheries, 2005. Engineering Standards Commentaries Port and Harbor Facilities.