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http://dx.doi.org/10.12989/was.2015.21.6.609

Dynamic reliability analysis of offshore wind turbine support structure under earthquake  

Kim, Dong-Hyawn (Department of Ocean Science and Engineering, Kunsan National University)
Lee, Gee-Nam (Department of Ocean Science and Engineering, Kunsan National University)
Lee, Yongjei (Chang Minwoo Structural Consultants)
Lee, Il-Keun (Korea Expressway Corporation Research Institure)
Publication Information
Wind and Structures / v.21, no.6, 2015 , pp. 609-623 More about this Journal
Abstract
Seismic reliability analysis of a jacket-type support structure for an offshore wind turbine was performed. When defining the limit state function by using the dynamic response of the support structure, a number of dynamic calculations must be performed in a First-Order Reliability Method (FORM). That means analysis costs become too high. In this paper, a new reliability analysis approach using a static response is used. The dynamic effect of the response is considered by introducing a new parameter called the Peak Response Factor (PRF). The probability distribution of PRF can be estimated by using the peak value in the dynamic response. The probability distribution of the PRF was obtained by analyzing dynamic responses during a set of ground motions. A numerical example is presented to compare the proposed approach with the conventional static response-based approach.
Keywords
offshore wind turbine; support structures; reliability; earthquake; dynamic response; peak response;
Citations & Related Records
Times Cited By KSCI : 7  (Citation Analysis)
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