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Structural Performance Assessment of Offshore Wind Turbine Jackets-a Comparative Study Under Dynamic Loading Environment

  • Ravindra DesaiEmail author
  • Krishna Makwana
  • Sandeep Potnis
Conference paper

Abstract

This work has focused on investigating the comparative performance of the conventional type of offshore jacket substructure and a modified twisted-tripod jacket type (MTJ) under static and dynamic loading environment. Conventional four-legged and four number of MTJ structures, with a finite number of leg twisting angles from 0° to 90°, for supporting 5 MW NREL wind turbine were analysed for a selected site. In order to compare performance under dynamic loading, the dimensions of the structures were designed iteratively using static stress analysis to ensure that all structures had a similar level of load-carrying capability. Static analyses were performed using SACS v8 and models were imported to SAP-2000 for dynamic response spectrum analyses. The results obtained here reveal that, in addition to savings in material costs, the modified twisted-tripod jacket performs more efficiently than conventional four-legged jackets. This study has established a framework of procedure for simplified analysis of wind turbine jackets under dynamic loading environment.

Keywords

Offshore wind turbine Static analysis Dynamic analysis Twisted jackets (MTJ-structures) JONSWAP wave spectra Twist angle 

Notes

Acknowledgement

Authors wish to greatly acknowledge the Management of Walchand College of Engineering Sangli for supporting this research through TEQIP-III.

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Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  • Ravindra Desai
    • 1
    Email author
  • Krishna Makwana
    • 2
  • Sandeep Potnis
    • 2
  1. 1.Walchand College of EngineeringSangliIndia
  2. 2.MIT World Peace UniversityPuneIndia

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