Seismic behaviour analysis of a wind turbine tower affected by sea ice based on a simplified model

Abstract Ice-structure interaction threatens the safety of the offshore structure; however, dynamic seismic action even renders this process more sophisticated. This research constructed a simplified calculation model for the wind turbine tower, ice, and water under seismic loading, which could avoi...

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Autores principales:	Shuai Huang, Qingjie Qi, Shufeng Zhai, Wengang Liu, Jianzhong Liu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/b7e36b0638e1402e85429544b944cce5
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spelling	oai:doaj.org-article:b7e36b0638e1402e85429544b944cce52021-12-02T17:04:06ZSeismic behaviour analysis of a wind turbine tower affected by sea ice based on a simplified model10.1038/s41598-021-86142-02045-2322https://doaj.org/article/b7e36b0638e1402e85429544b944cce52021-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-86142-0https://doaj.org/toc/2045-2322Abstract Ice-structure interaction threatens the safety of the offshore structure; however, dynamic seismic action even renders this process more sophisticated. This research constructed a simplified calculation model for the wind turbine tower, ice, and water under seismic loading, which could avoid solving the complex non-linear equations. Then, the seismic behaviour of the structure, i.e. wind turbine tower, in the presence and absence of influences of the sea ice was investigated, and we found the remarkable effect of sea ice upon the wind turbine tower when its mass is within a range; the wind turbine tower is found to have reduced capacity in energy dissipation, and thickness of tower walls or stiffening ribs is supposed to be enlarged for making the structure more ductile. Affected by the sea ice, the shear force and bending moment of the tower showed significant increases, and more attention needs to be paid to the tower bottom and action position of the sea ice. According to the dynamic similarity principle, finally paraffin was used to simulate sea ice, and shaking-table tests were performed for simulating dynamic ice-structure-water interactions. Results of shaking-table tests verified the rationality of our proposed simplified model.Shuai HuangQingjie QiShufeng ZhaiWengang LiuJianzhong LiuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Shuai Huang Qingjie Qi Shufeng Zhai Wengang Liu Jianzhong Liu Seismic behaviour analysis of a wind turbine tower affected by sea ice based on a simplified model
description	Abstract Ice-structure interaction threatens the safety of the offshore structure; however, dynamic seismic action even renders this process more sophisticated. This research constructed a simplified calculation model for the wind turbine tower, ice, and water under seismic loading, which could avoid solving the complex non-linear equations. Then, the seismic behaviour of the structure, i.e. wind turbine tower, in the presence and absence of influences of the sea ice was investigated, and we found the remarkable effect of sea ice upon the wind turbine tower when its mass is within a range; the wind turbine tower is found to have reduced capacity in energy dissipation, and thickness of tower walls or stiffening ribs is supposed to be enlarged for making the structure more ductile. Affected by the sea ice, the shear force and bending moment of the tower showed significant increases, and more attention needs to be paid to the tower bottom and action position of the sea ice. According to the dynamic similarity principle, finally paraffin was used to simulate sea ice, and shaking-table tests were performed for simulating dynamic ice-structure-water interactions. Results of shaking-table tests verified the rationality of our proposed simplified model.
format	article
author	Shuai Huang Qingjie Qi Shufeng Zhai Wengang Liu Jianzhong Liu
author_facet	Shuai Huang Qingjie Qi Shufeng Zhai Wengang Liu Jianzhong Liu
author_sort	Shuai Huang
title	Seismic behaviour analysis of a wind turbine tower affected by sea ice based on a simplified model
title_short	Seismic behaviour analysis of a wind turbine tower affected by sea ice based on a simplified model
title_full	Seismic behaviour analysis of a wind turbine tower affected by sea ice based on a simplified model
title_fullStr	Seismic behaviour analysis of a wind turbine tower affected by sea ice based on a simplified model
title_full_unstemmed	Seismic behaviour analysis of a wind turbine tower affected by sea ice based on a simplified model
title_sort	seismic behaviour analysis of a wind turbine tower affected by sea ice based on a simplified model
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/b7e36b0638e1402e85429544b944cce5
work_keys_str_mv	AT shuaihuang seismicbehaviouranalysisofawindturbinetoweraffectedbyseaicebasedonasimplifiedmodel AT qingjieqi seismicbehaviouranalysisofawindturbinetoweraffectedbyseaicebasedonasimplifiedmodel AT shufengzhai seismicbehaviouranalysisofawindturbinetoweraffectedbyseaicebasedonasimplifiedmodel AT wengangliu seismicbehaviouranalysisofawindturbinetoweraffectedbyseaicebasedonasimplifiedmodel AT jianzhongliu seismicbehaviouranalysisofawindturbinetoweraffectedbyseaicebasedonasimplifiedmodel
_version_	1718381870978170880

Seismic behaviour analysis of a wind turbine tower affected by sea ice based on a simplified model

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