Skip to main content

Advertisement

SpringerLink
Log in

Fragility analysis of an ageing monopile offshore wind turbine subjected to simultaneous wind and seismic load

  • Original Research Article
  • Published:
Safety in Extreme Environments Aims and scope Submit manuscript

Abstract

The loads induced as a result of seismic activities may jeopardize the serviceability of offshore wind turbines or may even lead the structure to reach the ultimate strength. The maximum load-carrying capacity of a support structure can be estimated by performing a structural assessment which accounts for the nonlinear effects arising from the material and geometry. The present work aims to analyze the fragility of a 5 MW monopile offshore wind turbine structure subjected to seismic activities accounting for soil interactions and time-variant structural degradation. The offshore wind turbine structure is subjected to different ground motions with different intensity. The nonlinear full transient dynamic structural analysis is carried out based on the finite element method, and the nonlinear monopile structural response during the different seismic activities is discussed. Finally, the fragility curves associated with the serviceability limit state design and the ultimate strength limit state are developed.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6
Fig. 7
Fig. 8
Fig. 9
Fig. 10
Fig. 11
Fig. 12
Fig. 13
Fig. 14
Fig. 15

Similar content being viewed by others

References

  • Ajamy A, Asgarian B, Ventura CE, Zolfaghari MR (2018) Seismic fragility analysis of jacket type offshore platforms considering soil-pile-structure interaction. Eng Struct 174:198–211

    Article  Google Scholar 

  • Alam J, Kim D, Choi B (2017) Uncertainty reduction of seismic fragility of intake tower using Bayesian Inference and Markov Chain Monte Carlo simulation. Struct Eng Mech 63:47–53

    Google Scholar 

  • ANSYS (2009) Advanced Analysis Techniques Guide vol Release 12.1. Ansys, Inc, Southpointe, 275 Technology Drive,Canonsburg, PA 15317

  • Asareh M-A, Schonberg W, Volz J (2016) Fragility analysis of a 5-MW NREL wind turbine considering aero-elastic and seismic interaction using finite element method. Finite Elem Anal Des 120:57–67

    Article  Google Scholar 

  • British Standard (2005) Eurocode 8: design of structures for earthquake resistance, part 1 - general rules, seismic actions and rules for buildings, BS EN1998-1:2004. British Standard, Brussels

  • De Risi R, Bhattacharya S, Goda K (2018) Seismic performance assessment of monopile-supported offshore wind turbines using unscaled natural earthquake records. Soil Dyn Earthq Eng 109:154–172

    Article  Google Scholar 

  • Elnashai AS, Di Sarno L (2008) Fundamentals of earthquake engineering. Wiley, New York

    Book  Google Scholar 

  • Garbatov Y, Guedes Soares C (2008) Corrosion wastage modeling of deteriorated bulk carrier decks. Int Shipbuild Prog 55:109–125

    Google Scholar 

  • Garbatov Y, Guedes Soares C, Wang G (2007) Nonlinear time dependent corrosion wastage of deck plates of ballast and cargo tanks of tankers. J Offshore Mech Arc Eng 129:48–55

    Article  Google Scholar 

  • Golafshani AA, Ebrahimian H, Bagheri V, Holmas T (2011) Assessment of offshore platforms under extreme waves by probabilistic incremental wave analysis. J Constr Steel Res 67:759–769

    Article  Google Scholar 

  • Hallowell ST et al (2018) Hurricane risk assessment of offshore wind turbines. Renew Energy 125:234–249

    Article  Google Scholar 

  • Han J, Moraga C (1995) The influence of the sigmoid function parameters on the speed of backpropagation learning. In: Mira J, Sandoval F (eds) From natural to artificial neural computation. Lecture notes in computer science. Springer, Heidelberg , pp 195–201

  • Ioannou I, Douglas J, Rossetto T (2015) Assessing the impact of ground-motion variability and uncertainty on empirical fragility curves. Soil Dyn Earthq Eng 69:83–92

    Article  Google Scholar 

  • Kennedy RP, Cornell CA, Campbell RD, Kaplan S, Perla HF (1980) Probabilistic seismic safety study of an existing nuclear power plant. Nucl Eng Des 59:315–338

    Article  Google Scholar 

  • Kim DH, Lee SG, Lee IK (2014) Seismic fragility analysis of 5 MW offshore wind turbine. Renew Energy 65:250–256

    Article  Google Scholar 

  • Martins L, Silva V, Bazzurro P, Marques M (2018) Advances in the derivation of fragility functions for the development of risk-targeted hazard maps. Eng Struct 173:669–680

    Article  Google Scholar 

  • Mo R, Kang H, Li M, Zhao X (2017) Seismic fragility analysis of monopile offshore wind turbines under different operational conditions. Energies 10:1037–1059

  • Reese LC (1983) Behavior of pile groups under lateral loading. U.S. Department of Transportation, Federal Highway Administration, Washington, D.C

    Google Scholar 

  • Rossetto T, Ioannou I (2018) Empirical fragility and vulnerability assessment: not just a regression. In: Michel G (ed) Risk modeling for hazards and disasters. Elsevier, Amsterdam, pp 79–103

  • Rota M, Penna A, Magenes G (2010) A methodology for deriving analytical fragility curves for masonry buildings based on stochastic nonlinear analyses. Eng Struct 32:1312–1323

    Article  Google Scholar 

  • Saad-Eldeen S, Garbatov Y, Guedes Soares C (2011) Experimental assessment of the ultimate strength of a box girder subjected to severe corrosion. Mar Struct 24:338–357

    Article  Google Scholar 

  • Shinozuka M, Feng MQ, Kim H-K, Kim S-H (2000) Nonlinear static procedure for fragility curve development. J Eng Mech 126:1287–1295

    Article  Google Scholar 

  • Silva JE, Garbatov Y, Guedes Soares C (2013) Ultimate strength assessment of rectangular steel plates subjected to a random non-uniform corrosion degradation. Eng Struct 52:295–305

    Article  Google Scholar 

  • Solomos G, Pinto A, Dimova S (2008) A review of the seismic hazard zonation in national building codes in the context of eurocode 8 JRC-Scientific and Technical Reports—EUR 23563:72

  • Yeter B, Garbatov Y, Guedes Soares C (2017) Risk-based multi-objective optimisation of a monopile offshore wind turbine support structure, OMAE2017–61756. In: Proceedings of The 36th International Conference on Ocean, Offshore and Arctic Engineering, OMAE17, Trondheim, Norway, June 25–30 2017

  • Yeter B, Garbatov Y, Guedes Soares C (2019) Uncertainty analysis of soil-pile interactions of monopile offshore wind turbine support structures. Appl Ocean Res 82:74–88

    Article  Google Scholar 

  • Zeinoddini M, Namin YY, Nikoo HM, Estekanchi H, Kimiaei M (2018) An EWA framework for the probabilistic-based structural integrity assessment of offshore platforms. Mar Struct 59:60–79

    Article  Google Scholar 

  • Zentner I, Gündel M, Bonfils N (2017) Fragility analysis methods: Review of existing approaches and application. Nucl Eng Des 323:245–258

    Article  Google Scholar 

  • Zheng XY, Li H, Rong W, Li W (2015) Joint earthquake and wave action on the monopile wind turbine foundation: An experimental study. Mar Struct 44:125–141

    Article  Google Scholar 

Download references

Acknowledgements

This work was performed within the Strategic Research Plan of the Centre for Marine Technology and Ocean Engineering (CENTEC), which is financed by Portuguese Foundation for Science and Technology (Fundação para a Ciência e Tecnologia - FCT) under contract UID/Multi/00134/2013-LISBOA-01-0145-FEDER-007629.

Author information

Authors and Affiliations

  1. Centre for Marine Technology and Ocean Engineering (CENTEC), Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal

    Baran Yeter, Mesut Tekgoz, Yordan Garbatov & Carlos Guedes Soares

Authors
  1. Baran Yeter
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Mesut Tekgoz
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Yordan Garbatov
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Carlos Guedes Soares
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Yordan Garbatov.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Yeter, B., Tekgoz, M., Garbatov, Y. et al. Fragility analysis of an ageing monopile offshore wind turbine subjected to simultaneous wind and seismic load. Saf. Extreme Environ. 2, 155–170 (2020). https://doi.org/10.1007/s42797-020-00015-9

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s42797-020-00015-9

Keywords

Search

Navigation