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Foundation damping model for monopile foundations supporting offshore wind turbines
Foundation damping holds significant potential for reducing the loads for large-diameter monopile-supported offshore wind turbines (OWTs). How-ever, understanding the contribution of foundation damping is hindered by a lack of accurate methods for assessing it. Recently, a novel approach has been introduced, proposing a convenient mapping relationship between the soil-pile inter-action damping at the p-y spring level and the soil damping at the element level. However, this model, based on a flow-around mechanism of the soil surrounding the pile, is specifically tailored for long slender piles typically used for offshore oil and gas platforms and small megawatt OWTs, thereby limiting its applicability for large-diameter monopiles, where the soil around the monopile primarily reacts in a wedge failure along the upper part of the pile. To address this limitation, this study investigates the relationship between foundation damping and damping at the soil element level within the region governed by the wedge failure mechanism using 3D Finite Element Analysis (FEA). Through comprehensive parametric analyses, the mapping coefficients are calibrated, and a foundation damping model tailored for large-diameter monopiles is obtained.
Foundation damping model for monopile foundations supporting offshore wind turbines
Foundation damping holds significant potential for reducing the loads for large-diameter monopile-supported offshore wind turbines (OWTs). How-ever, understanding the contribution of foundation damping is hindered by a lack of accurate methods for assessing it. Recently, a novel approach has been introduced, proposing a convenient mapping relationship between the soil-pile inter-action damping at the p-y spring level and the soil damping at the element level. However, this model, based on a flow-around mechanism of the soil surrounding the pile, is specifically tailored for long slender piles typically used for offshore oil and gas platforms and small megawatt OWTs, thereby limiting its applicability for large-diameter monopiles, where the soil around the monopile primarily reacts in a wedge failure along the upper part of the pile. To address this limitation, this study investigates the relationship between foundation damping and damping at the soil element level within the region governed by the wedge failure mechanism using 3D Finite Element Analysis (FEA). Through comprehensive parametric analyses, the mapping coefficients are calibrated, and a foundation damping model tailored for large-diameter monopiles is obtained.
Foundation damping model for monopile foundations supporting offshore wind turbines
Lecture Notes in Civil Engineering
Huynh, Dat Vu Khoa (Herausgeber:in) / Doan, Hong (Herausgeber:in) / Cao, Tri Mai (Herausgeber:in) / Watson, Phil (Herausgeber:in) / Guo, Peng (Autor:in) / Zhang, Youhu (Autor:in) / Di, Tongyu (Autor:in)
Vietnam Symposium on Advances in Offshore Engineering ; 2024 ; Hanoi, Vietnam
Proceedings of the 3rd Vietnam Symposium on Advances in Offshore Engineering ; Kapitel: 34 ; 355-362
01.04.2025
8 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Analysis of Response of the Monopile Foundations of Offshore Wind Turbines
| BASE | 2019
| Europäisches Patentamt | 2020