Numerical Analysis of the Deformation Performance of Monopile under Wave and Current Load
The research on the deformation mechanism of monopile foundation supporting offshore wind turbines is significant to optimize the design of a monopile foundation under wave and current load. In this paper, a three-dimensional wave-pile-soil coupling finite element model is proposed to investigate th...
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| Format: | Article |
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MDPI AG
2020-12-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/13/23/6431 |
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| author | Libo Chen Xiaoyan Yang Lichen Li Wenbing Wu M. Hesham El Naggar Kuihua Wang Jinyong Chen |
| author_facet | Libo Chen Xiaoyan Yang Lichen Li Wenbing Wu M. Hesham El Naggar Kuihua Wang Jinyong Chen |
| author_sort | Libo Chen |
| collection | DOAJ |
| description | The research on the deformation mechanism of monopile foundation supporting offshore wind turbines is significant to optimize the design of a monopile foundation under wave and current load. In this paper, a three-dimensional wave-pile-soil coupling finite element model is proposed to investigate the deformation mechanism of monopile undercurrent and fifth-order Stokes wave. Different from the conventional assumption that there is no slip at the pile-soil interface, Frictional contact is set to simulate the relative movement between monopile and soil. Numerical results indicate that under extreme environmental conditions, the monopile foundation sways within a certain range and the maximum displacement in the loading direction is 1.3 times the displacement in the reverse direction. A further investigation has been made for a large-diameter pipe pile with various design parameters. The finite element analyses reveal that the most efficient way to reduce the deflection of the pile head is by increasing the embedment depth of the monopile. When the embedment depth is limited, increasing the pile diameter is a more effective way to strengthen the foundation than increasing the wall thickness. |
| first_indexed | 2024-03-10T14:18:46Z |
| format | Article |
| id | doaj.art-b98497a48a114d3a9aed9bc40ac6ee0f |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T14:18:46Z |
| publishDate | 2020-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-b98497a48a114d3a9aed9bc40ac6ee0f2023-11-20T23:33:26ZengMDPI AGEnergies1996-10732020-12-011323643110.3390/en13236431Numerical Analysis of the Deformation Performance of Monopile under Wave and Current LoadLibo Chen0Xiaoyan Yang1Lichen Li2Wenbing Wu3M. Hesham El Naggar4Kuihua Wang5Jinyong Chen6Engineering Research Center of Rock-Soil Drilling & Excavation and Protection, Ministry of Education, Faculty of Engineering, China University of Geosciences, Wuhan 430074, ChinaEngineering Research Center of Rock-Soil Drilling & Excavation and Protection, Ministry of Education, Faculty of Engineering, China University of Geosciences, Wuhan 430074, ChinaEngineering Research Center of Rock-Soil Drilling & Excavation and Protection, Ministry of Education, Faculty of Engineering, China University of Geosciences, Wuhan 430074, ChinaEngineering Research Center of Rock-Soil Drilling & Excavation and Protection, Ministry of Education, Faculty of Engineering, China University of Geosciences, Wuhan 430074, ChinaEngineering Research Center of Rock-Soil Drilling & Excavation and Protection, Ministry of Education, Faculty of Engineering, China University of Geosciences, Wuhan 430074, ChinaGeotechnical Research Centre, Department of Civil and Environmental Engineering, Western University, London, ON N6A 5B9, CanadaEngineering Research Center of Rock-Soil Drilling & Excavation and Protection, Ministry of Education, Faculty of Engineering, China University of Geosciences, Wuhan 430074, ChinaThe research on the deformation mechanism of monopile foundation supporting offshore wind turbines is significant to optimize the design of a monopile foundation under wave and current load. In this paper, a three-dimensional wave-pile-soil coupling finite element model is proposed to investigate the deformation mechanism of monopile undercurrent and fifth-order Stokes wave. Different from the conventional assumption that there is no slip at the pile-soil interface, Frictional contact is set to simulate the relative movement between monopile and soil. Numerical results indicate that under extreme environmental conditions, the monopile foundation sways within a certain range and the maximum displacement in the loading direction is 1.3 times the displacement in the reverse direction. A further investigation has been made for a large-diameter pipe pile with various design parameters. The finite element analyses reveal that the most efficient way to reduce the deflection of the pile head is by increasing the embedment depth of the monopile. When the embedment depth is limited, increasing the pile diameter is a more effective way to strengthen the foundation than increasing the wall thickness.https://www.mdpi.com/1996-1073/13/23/6431monopileoffshore wind turbinethree-dimensional finite element methodwave loadpile-soil interaction |
| spellingShingle | Libo Chen Xiaoyan Yang Lichen Li Wenbing Wu M. Hesham El Naggar Kuihua Wang Jinyong Chen Numerical Analysis of the Deformation Performance of Monopile under Wave and Current Load Energies monopile offshore wind turbine three-dimensional finite element method wave load pile-soil interaction |
| title | Numerical Analysis of the Deformation Performance of Monopile under Wave and Current Load |
| title_full | Numerical Analysis of the Deformation Performance of Monopile under Wave and Current Load |
| title_fullStr | Numerical Analysis of the Deformation Performance of Monopile under Wave and Current Load |
| title_full_unstemmed | Numerical Analysis of the Deformation Performance of Monopile under Wave and Current Load |
| title_short | Numerical Analysis of the Deformation Performance of Monopile under Wave and Current Load |
| title_sort | numerical analysis of the deformation performance of monopile under wave and current load |
| topic | monopile offshore wind turbine three-dimensional finite element method wave load pile-soil interaction |
| url | https://www.mdpi.com/1996-1073/13/23/6431 |
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