Behavior of Mono Helical Pile Foundation in Clays under Combined Uplift and Lateral Loading Conditions
Offshore wind energy development is driven by ongoing research and development to determine technological issues connected with offshore wind turbines. A fundamental design difficulty is the offshore wind turbine foundations. By far, one of the most commonly practiced foundation systems is mono heli...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-07-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/12/14/6827 |
| _version_ | 1797407718818971648 |
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| author | Vignesh Venkatesan Muthukumar Mayakrishnan |
| author_facet | Vignesh Venkatesan Muthukumar Mayakrishnan |
| author_sort | Vignesh Venkatesan |
| collection | DOAJ |
| description | Offshore wind energy development is driven by ongoing research and development to determine technological issues connected with offshore wind turbines. A fundamental design difficulty is the offshore wind turbine foundations. By far, one of the most commonly practiced foundation systems is mono helical pile foundations because of their simplicity and resilience. Most of the studies on mono helical piles were focused on granular soils and few studies were on clayey soils. However, mono helical piles in clayey soils under combined loading remain to be examined. Hence, a series of three-dimensional finite element analyses were carried out to predict the uplift and lateral capacity of the helical pile embedded in soft clay. The numerical model is verified using the results from the analytical results and a small-scale laboratory test. The verified model is used to simulate the helical pile behavior under the combined uplift and lateral loading condition considering the pile with a different number of helical plates. The results of the combined loading analyses reveal that the lateral capacity decreased when the pile was subjected to uplift load, and a maximum reduction of 12% is observed in mono helical piles provided with a single plate for an applied 50% of the ultimate uplift load. The influence of uplift load also increased the bending moment of the helical pile. Finally, it is suggested that the helical piles should be designed considering the aspects for combined loading conditions. |
| first_indexed | 2024-03-09T03:45:40Z |
| format | Article |
| id | doaj.art-964694ba5fbe4e6ab5ebbaf492f37428 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-09T03:45:40Z |
| publishDate | 2022-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-964694ba5fbe4e6ab5ebbaf492f374282023-12-03T14:34:37ZengMDPI AGApplied Sciences2076-34172022-07-011214682710.3390/app12146827Behavior of Mono Helical Pile Foundation in Clays under Combined Uplift and Lateral Loading ConditionsVignesh Venkatesan0Muthukumar Mayakrishnan1School of Civil Engineering, Vellore Institute of Technology (VIT), Vellore 632014, IndiaSchool of Civil Engineering, Vellore Institute of Technology (VIT), Vellore 632014, IndiaOffshore wind energy development is driven by ongoing research and development to determine technological issues connected with offshore wind turbines. A fundamental design difficulty is the offshore wind turbine foundations. By far, one of the most commonly practiced foundation systems is mono helical pile foundations because of their simplicity and resilience. Most of the studies on mono helical piles were focused on granular soils and few studies were on clayey soils. However, mono helical piles in clayey soils under combined loading remain to be examined. Hence, a series of three-dimensional finite element analyses were carried out to predict the uplift and lateral capacity of the helical pile embedded in soft clay. The numerical model is verified using the results from the analytical results and a small-scale laboratory test. The verified model is used to simulate the helical pile behavior under the combined uplift and lateral loading condition considering the pile with a different number of helical plates. The results of the combined loading analyses reveal that the lateral capacity decreased when the pile was subjected to uplift load, and a maximum reduction of 12% is observed in mono helical piles provided with a single plate for an applied 50% of the ultimate uplift load. The influence of uplift load also increased the bending moment of the helical pile. Finally, it is suggested that the helical piles should be designed considering the aspects for combined loading conditions.https://www.mdpi.com/2076-3417/12/14/6827mono helical pilecombined loadingoffshore foundationsearth anchorsdeep foundations |
| spellingShingle | Vignesh Venkatesan Muthukumar Mayakrishnan Behavior of Mono Helical Pile Foundation in Clays under Combined Uplift and Lateral Loading Conditions Applied Sciences mono helical pile combined loading offshore foundations earth anchors deep foundations |
| title | Behavior of Mono Helical Pile Foundation in Clays under Combined Uplift and Lateral Loading Conditions |
| title_full | Behavior of Mono Helical Pile Foundation in Clays under Combined Uplift and Lateral Loading Conditions |
| title_fullStr | Behavior of Mono Helical Pile Foundation in Clays under Combined Uplift and Lateral Loading Conditions |
| title_full_unstemmed | Behavior of Mono Helical Pile Foundation in Clays under Combined Uplift and Lateral Loading Conditions |
| title_short | Behavior of Mono Helical Pile Foundation in Clays under Combined Uplift and Lateral Loading Conditions |
| title_sort | behavior of mono helical pile foundation in clays under combined uplift and lateral loading conditions |
| topic | mono helical pile combined loading offshore foundations earth anchors deep foundations |
| url | https://www.mdpi.com/2076-3417/12/14/6827 |
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