Model Tests on Cyclic Responses of a Laterally Loaded Pile Considering Sand Anisotropy and Scouring
Monopile is a common foundation for offshore wind turbines. Long-term cyclic loading from winds and currents may affect the normal operation of offshore wind turbines. For offshore wind farms, natural soils are usually inherently anisotropic, and scouring often occurs as a removal of soil around a m...
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MDPI AG
2023-01-01
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| Series: | Journal of Marine Science and Engineering |
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| Online Access: | https://www.mdpi.com/2077-1312/11/2/255 |
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| author | Feng Yu Chenrong Zhang Maosong Huang Xiaofeng Yang Zhaoming Yao |
| author_facet | Feng Yu Chenrong Zhang Maosong Huang Xiaofeng Yang Zhaoming Yao |
| author_sort | Feng Yu |
| collection | DOAJ |
| description | Monopile is a common foundation for offshore wind turbines. Long-term cyclic loading from winds and currents may affect the normal operation of offshore wind turbines. For offshore wind farms, natural soils are usually inherently anisotropic, and scouring often occurs as a removal of soil around a monopile. Their influence on pile behavior is seldom studied. To investigate the effects of anisotropy of sand and scouring on a cyclic laterally loaded pile, a series of 1 g model tests are conducted, in which three deposition angles of sand, two scour depths, and two cyclic amplitudes are considered. It was found that for a monopile in sandy soil, the accumulated displacements at the pile head increased with the increased deposition angles of sand and scour depth. The effects of sand anisotropy are more profound for piles with a smaller cyclic amplitude. However, the results for the pile with and without scouring did not give a consistent tendency as the factors of anisotropy of sand. Based on test results, an explicit expression is advised to assess the long-term accumulated residual displacement at the pile head, in which factors of deposition angle of sand, scour depth, and cyclic amplitudes are incorporated. |
| first_indexed | 2024-03-11T08:36:34Z |
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| id | doaj.art-690397bdc600469b94cff476ec6a4da4 |
| institution | Directory Open Access Journal |
| issn | 2077-1312 |
| language | English |
| last_indexed | 2024-03-11T08:36:34Z |
| publishDate | 2023-01-01 |
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| series | Journal of Marine Science and Engineering |
| spelling | doaj.art-690397bdc600469b94cff476ec6a4da42023-11-16T21:26:38ZengMDPI AGJournal of Marine Science and Engineering2077-13122023-01-0111225510.3390/jmse11020255Model Tests on Cyclic Responses of a Laterally Loaded Pile Considering Sand Anisotropy and ScouringFeng Yu0Chenrong Zhang1Maosong Huang2Xiaofeng Yang3Zhaoming Yao4School of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan 232001, ChinaDepartment of Geotechnical Engineering, Tongji University, Shanghai 200092, ChinaDepartment of Geotechnical Engineering, Tongji University, Shanghai 200092, ChinaSchool of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan 232001, ChinaSchool of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan 232001, ChinaMonopile is a common foundation for offshore wind turbines. Long-term cyclic loading from winds and currents may affect the normal operation of offshore wind turbines. For offshore wind farms, natural soils are usually inherently anisotropic, and scouring often occurs as a removal of soil around a monopile. Their influence on pile behavior is seldom studied. To investigate the effects of anisotropy of sand and scouring on a cyclic laterally loaded pile, a series of 1 g model tests are conducted, in which three deposition angles of sand, two scour depths, and two cyclic amplitudes are considered. It was found that for a monopile in sandy soil, the accumulated displacements at the pile head increased with the increased deposition angles of sand and scour depth. The effects of sand anisotropy are more profound for piles with a smaller cyclic amplitude. However, the results for the pile with and without scouring did not give a consistent tendency as the factors of anisotropy of sand. Based on test results, an explicit expression is advised to assess the long-term accumulated residual displacement at the pile head, in which factors of deposition angle of sand, scour depth, and cyclic amplitudes are incorporated.https://www.mdpi.com/2077-1312/11/2/255model testmonopilecyclic loadanisotropy of sandscouring |
| spellingShingle | Feng Yu Chenrong Zhang Maosong Huang Xiaofeng Yang Zhaoming Yao Model Tests on Cyclic Responses of a Laterally Loaded Pile Considering Sand Anisotropy and Scouring Journal of Marine Science and Engineering model test monopile cyclic load anisotropy of sand scouring |
| title | Model Tests on Cyclic Responses of a Laterally Loaded Pile Considering Sand Anisotropy and Scouring |
| title_full | Model Tests on Cyclic Responses of a Laterally Loaded Pile Considering Sand Anisotropy and Scouring |
| title_fullStr | Model Tests on Cyclic Responses of a Laterally Loaded Pile Considering Sand Anisotropy and Scouring |
| title_full_unstemmed | Model Tests on Cyclic Responses of a Laterally Loaded Pile Considering Sand Anisotropy and Scouring |
| title_short | Model Tests on Cyclic Responses of a Laterally Loaded Pile Considering Sand Anisotropy and Scouring |
| title_sort | model tests on cyclic responses of a laterally loaded pile considering sand anisotropy and scouring |
| topic | model test monopile cyclic load anisotropy of sand scouring |
| url | https://www.mdpi.com/2077-1312/11/2/255 |
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