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- Publisher Website: 10.1016/j.oceaneng.2020.106963
- Scopus: eid_2-s2.0-85078129746
- WOS: WOS:000519658600009
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Article: A novel hybrid monopile foundation for offshore wind turbines
Title | A novel hybrid monopile foundation for offshore wind turbines |
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Authors | |
Keywords | Offshore wind turbineMonopile Concrete-filled double skin steel tubular structure Accumulated rotation Natural frequency |
Issue Date | 2020 |
Publisher | Pergamon. The Journal's web site is located at http://www.elsevier.com/locate/oceaneng |
Citation | Ocean Engineering, 2020, v. 198, p. article no. 106963 How to Cite? |
Abstract | This paper presents a hybrid monopile foundation for offshore wind turbines. It is an ultra-high performance concrete-filled double skin steel tubular structure (CFDST) used as a replacement of the conventional steel tube between the water level and the mudline so as to reduce the monopile diameter and thereby reducing the wave loads on the pile. To study the feasibility of this monopile, the NREL 5 MW wind turbine supported by a conventional monopile is selected as a reference and a three-dimensional (3D) finite element model is developed. The natural frequency, the various responses under the serviceability limit state (SLS) and the ultimate limit state (ULS) of the hybrid monopile are presented. Particularly, the effect of varying outer diameter of the CFDST on the structural performance is investigated. By applying a consistent accumulated rotation at the mudline under the SLS, the natural frequency is found to be within a desired range, and an optimized embedded length of the hybrid monopile is determined. The results indicate that the proposed hybrid monopile is able to meet the design requirements for both SLS and ULS and the optimization of pile embedded length leads to an efficient and economic monopile foundation for offshore wind turbines. |
Persistent Identifier | http://hdl.handle.net/10722/293592 |
ISSN | 2023 Impact Factor: 4.6 2023 SCImago Journal Rankings: 1.214 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Ma, H | - |
dc.contributor.author | Yang, J | - |
dc.date.accessioned | 2020-11-23T08:19:00Z | - |
dc.date.available | 2020-11-23T08:19:00Z | - |
dc.date.issued | 2020 | - |
dc.identifier.citation | Ocean Engineering, 2020, v. 198, p. article no. 106963 | - |
dc.identifier.issn | 0029-8018 | - |
dc.identifier.uri | http://hdl.handle.net/10722/293592 | - |
dc.description.abstract | This paper presents a hybrid monopile foundation for offshore wind turbines. It is an ultra-high performance concrete-filled double skin steel tubular structure (CFDST) used as a replacement of the conventional steel tube between the water level and the mudline so as to reduce the monopile diameter and thereby reducing the wave loads on the pile. To study the feasibility of this monopile, the NREL 5 MW wind turbine supported by a conventional monopile is selected as a reference and a three-dimensional (3D) finite element model is developed. The natural frequency, the various responses under the serviceability limit state (SLS) and the ultimate limit state (ULS) of the hybrid monopile are presented. Particularly, the effect of varying outer diameter of the CFDST on the structural performance is investigated. By applying a consistent accumulated rotation at the mudline under the SLS, the natural frequency is found to be within a desired range, and an optimized embedded length of the hybrid monopile is determined. The results indicate that the proposed hybrid monopile is able to meet the design requirements for both SLS and ULS and the optimization of pile embedded length leads to an efficient and economic monopile foundation for offshore wind turbines. | - |
dc.language | eng | - |
dc.publisher | Pergamon. The Journal's web site is located at http://www.elsevier.com/locate/oceaneng | - |
dc.relation.ispartof | Ocean Engineering | - |
dc.subject | Offshore wind turbineMonopile | - |
dc.subject | Concrete-filled double skin steel tubular structure | - |
dc.subject | Accumulated rotation | - |
dc.subject | Natural frequency | - |
dc.title | A novel hybrid monopile foundation for offshore wind turbines | - |
dc.type | Article | - |
dc.identifier.email | Yang, J: junyang@hkucc.hku.hk | - |
dc.identifier.authority | Yang, J=rp00201 | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/j.oceaneng.2020.106963 | - |
dc.identifier.scopus | eid_2-s2.0-85078129746 | - |
dc.identifier.hkuros | 319589 | - |
dc.identifier.volume | 198 | - |
dc.identifier.spage | article no. 106963 | - |
dc.identifier.epage | article no. 106963 | - |
dc.identifier.isi | WOS:000519658600009 | - |
dc.publisher.place | United Kingdom | - |