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Feasibility study of a steel-UHPFRC hybrid tower for offshore wind turbines
Chen, C.; Shen, X.; Zhou, Z.; Hua, X. (2023). Feasibility study of a steel-UHPFRC hybrid tower for offshore wind turbines. Ocean Eng. 288(Part 2): 116140. https://dx.doi.org/10.1016/j.oceaneng.2023.116140
In: Ocean Engineering. Pergamon: Elmsford. ISSN 0029-8018; e-ISSN 1873-5258, meer
Peer reviewed article  

Beschikbaar in  Auteurs 

Trefwoord
    Marien/Kust
Author keywords
    Offshore wind turbine; UHPFRC; Hybrid tower; Fatigue life prediction; Ultimate resistance

Auteurs  Top 
  • Chen, C.
  • Shen, X., meer
  • Zhou, Z.
  • Hua, X.

Abstract
    A steel-ultra high performance fibre reinforced composites (steel-UHPFRC) hybrid tubular tower structure (>= 100m) is proposed and its feasibility to support an offshore wind turbine (OWT) with a 10 MW rotor is investigated in this paper. The hybrid tower combines a reinforced UHPFRC tube at the bottom and a steel tube at the top. Two numerical models are established to calculate the ultimate and fatigue loads for the hybrid tower and a standard steel tube tower as a reference. A simplified method is proposed to estimate the ultimate strength of the reinforced UHPFRC tube section, while a method based on the S-N curves is used to check its fatigue strength. It is found that the hybrid tower can satisfy design requirements and has a much longer fatigue life compared to the reference steel tower. Furthermore, the total material cost of the hybrid tower is found to be only 58% of that of the reference steel tower, while the masses of these two towers are kept close.

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