Advanced Reliability Assessment of Offshore Wind Turbine Monopiles by Combining Reliability Analysis Method and SHM/CM Technology

Athanasios Kolios, Lin Wang

Research output: Chapter in Book/Report/Conference proceedingConference proceeding

1 Citation (Scopus)

Abstract

In this work, advanced reliability assessment of OWT (offshore wind turbine) monopiles is proposed by combining reliability analysis method and SHM (structural health monitoring) / CM (condition monitoring) technology. A 3D (three-dimensional) parametric FEA (finite element analysis) model of OWT monopiles is developed, considering soil-structure interactions. A number of stochastic FEA simulations of OWT monopiles are performed, taking account of stochastic variables, such as wind loads, wave loads and soil properties. Multivariate regression is then used to post-process the FEA results, obtaining the performance functions expressed in terms of stochastic variables. After that, FORM (first order reliability method) is used to calculate the reliability index, evaluating the reliability of the OWT monopiles. In the presence of SHM/CM data, the reliability of monopile structures is reassessed and updated. The updated reliability index provides valuable information for decision making for inspection and maintenance of OWT monopiles. The application of the proposed advance reliability assessment method to a 45m-length OWT monopile is presented, showing great potential to reduce the OPEX (operating expenditure) of OWT monopiles by using the proposed method.
Original languageEnglish
Title of host publicationProceedings of the Twenty-eighth (2018) International Ocean and Polar Engineering Conference : Sapporo, Japan, June 10-15, 2018
Publisher International Society of Offshore and Polar Engineers
Pages1412-1419
Number of pages8
ISBN (Electronic)978-1-880653-87-6
Publication statusPublished - 30 Jul 2018
Externally publishedYes
Event28th International Ocean and Polar Engineering Conference - Sapporo, Japan
Duration: 10 Jun 201815 Jun 2018
Conference number: 28

Publication series

Name
ISSN (Electronic)1098-6189

Conference

Conference28th International Ocean and Polar Engineering Conference
Abbreviated titleISOPE-2018
CountryJapan
CitySapporo
Period10/06/1815/06/18

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Kolios, A., & Wang, L. (2018). Advanced Reliability Assessment of Offshore Wind Turbine Monopiles by Combining Reliability Analysis Method and SHM/CM Technology. In Proceedings of the Twenty-eighth (2018) International Ocean and Polar Engineering Conference : Sapporo, Japan, June 10-15, 2018 (pp. 1412-1419). International Society of Offshore and Polar Engineers.