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Ships and Offshore Structures Volume 14, 2019 - Issue 7
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Articles

Structural analysis of fibreglass reinforced bonded flexible pipe subjected to tension

Yuxin XuCollege of Civil Engineering and Architecture, Zhejiang University, Hangzhou, People’s Republic of ChinaView further author information
,
Yong BaiCollege of Civil Engineering and Architecture, Zhejiang University, Hangzhou, People’s Republic of ChinaView further author information
,
Pan FangCollege of Civil Engineering and Architecture, Zhejiang University, Hangzhou, People’s Republic of ChinaView further author information
,
Shuai YuanCollege of Civil Engineering and Architecture, Zhejiang University, Hangzhou, People’s Republic of ChinaCorrespondence[email protected]
ORCID Iconhttps://orcid.org/0000-0001-7679-2428View further author information
ORCID Icon &
Chang LiuShen Zhen OPR Co., Ltd., Shenzhen, People’s Republic of ChinaView further author information
Pages 777-787 | Received 02 Jun 2018, Accepted 09 Dec 2018, Published online: 09 Jan 2019
 
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ABSTRACT

Fibreglass reinforced flexible pipe (FGRFP) is regarded as a great alternative to bonded flexible pipes in the field of oil or gas transportation. FGRFP is compounded by high-strength fibreglass and thermoplastic material, which subjected to tension loading in the process of installation and operation. In this paper, the mechanical behaviour of FGRFP subjected to tension is investigated by experimental, theoretical and finite element methods (FEM). Previous related research has mainly focused on laminated-plate theory without considering material nonlinearity. However, not only can the analytical model adopted in this paper take material nonlinearity into consideration, but it can also evaluate the specific effects of each material. Full-scale laboratory tests were conducted and the relationship between axial loads and extensions of FGRFP acquired from the experiment is compared with that of theoretical and FE simulations. Good agreements demonstrate the accuracy and reliability of the analytical model and FEM. Then, detailed responses of the high-density polyethylene and fibreglass under pure tension are analysed. In addition, the parametric study on the structural response is conducted to provide a valuable reference for engineering practices. This work may provide an improved method for estimating structural response of composite pipes with helical reinforced layers.

Acknowledgements

The authors would like to acknowledge Kevin Conroy who helped us to examine the grammar of this paper. In addition, the authors express their gratitude to Shanghai Fei Zhou Bo Yuan Petroleum Equipment Technology Co., Ltd. for their help on conducting the experimental studies with all necessary equipment.

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was supported by China Scholarship Council.

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