Bearing Characteristics of Helical Pile Foundations for Offshore Wind Turbines in Sandy Soil
Helical pile foundations are a new foundation type for offshore wind power applications with high bearing capacity and good recovery that can be quickly and easily constructed. In this study, the finite element method was used to simulate the bearing characteristics of helical pile foundations after...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-06-01
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| Series: | Journal of Marine Science and Engineering |
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| Online Access: | https://www.mdpi.com/2077-1312/10/7/889 |
| _version_ | 1797433451876450304 |
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| author | Yifeng Lin Jiandong Xiao Conghuan Le Puyang Zhang Qingshan Chen Hongyan Ding |
| author_facet | Yifeng Lin Jiandong Xiao Conghuan Le Puyang Zhang Qingshan Chen Hongyan Ding |
| author_sort | Yifeng Lin |
| collection | DOAJ |
| description | Helical pile foundations are a new foundation type for offshore wind power applications with high bearing capacity and good recovery that can be quickly and easily constructed. In this study, the finite element method was used to simulate the bearing characteristics of helical pile foundations after installation. For simulations, a blade, deeply buried in a single layer of sand, was selected. Through numerical simulations, the vertical bearing characteristics of a single helical screw pile and an ordinary pile without blades were compared, and the compression and uplift characteristics of the helical pile were revealed. In addition, the effects of pitch, blade diameter, inclination angle, number of blades, and blade spacing on the bearing characteristics of a single helical pile were analyzed. The results show that the single helical pile has the highest bearing capacity and bearing efficiency when the pitch is 0.02 times the blade buried depth, the blade diameter is 2.5 times the pile diameter, the multi-blade spacing is more than two times the blade diameter, and the number of blades is less than or equal to three. However, compared with the straight pile, the vertical bearing capacity of the single inclined helical pile did not improve significantly. |
| first_indexed | 2024-03-09T10:16:16Z |
| format | Article |
| id | doaj.art-5187500ca3604146b72fd872b0ea2659 |
| institution | Directory Open Access Journal |
| issn | 2077-1312 |
| language | English |
| last_indexed | 2024-03-09T10:16:16Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj.art-5187500ca3604146b72fd872b0ea26592023-12-01T22:19:17ZengMDPI AGJournal of Marine Science and Engineering2077-13122022-06-0110788910.3390/jmse10070889Bearing Characteristics of Helical Pile Foundations for Offshore Wind Turbines in Sandy SoilYifeng Lin0Jiandong Xiao1Conghuan Le2Puyang Zhang3Qingshan Chen4Hongyan Ding5Shanghai Investigation, Design & Research Institute Co., Ltd., Shanghai 200355, ChinaShanghai Investigation, Design & Research Institute Co., Ltd., Shanghai 200355, ChinaSchool of Civil Engineering, Tianjin University, Tianjin 300072, ChinaSchool of Civil Engineering, Tianjin University, Tianjin 300072, ChinaSchool of Civil Engineering, Tianjin University, Tianjin 300072, ChinaSchool of Civil Engineering, Tianjin University, Tianjin 300072, ChinaHelical pile foundations are a new foundation type for offshore wind power applications with high bearing capacity and good recovery that can be quickly and easily constructed. In this study, the finite element method was used to simulate the bearing characteristics of helical pile foundations after installation. For simulations, a blade, deeply buried in a single layer of sand, was selected. Through numerical simulations, the vertical bearing characteristics of a single helical screw pile and an ordinary pile without blades were compared, and the compression and uplift characteristics of the helical pile were revealed. In addition, the effects of pitch, blade diameter, inclination angle, number of blades, and blade spacing on the bearing characteristics of a single helical pile were analyzed. The results show that the single helical pile has the highest bearing capacity and bearing efficiency when the pitch is 0.02 times the blade buried depth, the blade diameter is 2.5 times the pile diameter, the multi-blade spacing is more than two times the blade diameter, and the number of blades is less than or equal to three. However, compared with the straight pile, the vertical bearing capacity of the single inclined helical pile did not improve significantly.https://www.mdpi.com/2077-1312/10/7/889helical pilebearing capacitynumerical simulation |
| spellingShingle | Yifeng Lin Jiandong Xiao Conghuan Le Puyang Zhang Qingshan Chen Hongyan Ding Bearing Characteristics of Helical Pile Foundations for Offshore Wind Turbines in Sandy Soil Journal of Marine Science and Engineering helical pile bearing capacity numerical simulation |
| title | Bearing Characteristics of Helical Pile Foundations for Offshore Wind Turbines in Sandy Soil |
| title_full | Bearing Characteristics of Helical Pile Foundations for Offshore Wind Turbines in Sandy Soil |
| title_fullStr | Bearing Characteristics of Helical Pile Foundations for Offshore Wind Turbines in Sandy Soil |
| title_full_unstemmed | Bearing Characteristics of Helical Pile Foundations for Offshore Wind Turbines in Sandy Soil |
| title_short | Bearing Characteristics of Helical Pile Foundations for Offshore Wind Turbines in Sandy Soil |
| title_sort | bearing characteristics of helical pile foundations for offshore wind turbines in sandy soil |
| topic | helical pile bearing capacity numerical simulation |
| url | https://www.mdpi.com/2077-1312/10/7/889 |
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