Comparative study of hybrid monopile foundation for offshore wind turbines
Comparative study of hybrid monopile foundation for offshore wind turbines
Monopiles, due to their simplicity in shape and easy fabrication, is a preferred option for supporting offshore wind turbines. As the turbines are getting larger, the monopiles required to support them are also getting heavier, larger, and longer which poses fabrication and installation challenges. The aim of the paper is to investigate the effects of adding a plate to a monopile at the mudline level to overcome the limitations of traditional monopiles. Codes of practice to design such systems are currently unavailable, therefore, numerical modelling was proposed to analyse such hybrid systems. A series of 1g tests were conducted to assess the ultimate capacities of a hybrid and monopile foundations under static loads, for comparison with numerical studies. To study the feasibility, the numerical analysis of 8MW Offshore Wind Turbine supported on a conventional monopile was performed using commercially available FE program. The results show that the hybrid foundation provided additional shear strength to resist lateral loads, limited pile head rotation, reduced embedment length and improves the system's lateral performance. This investigation proves the potential of hybrid foundations for a better solution in specific site conditions.
Muhammad Aleem; Sachin Jindal; Ulvi Rahmanli; Subhamoy Bhattacharya; M. Massah Fard
10th European Conference on Numerical Methods in Geotechnical Engineering (NUMGE2023)
12. Offshore geotechnics
https://doi.org/10.53243/NUMGE2023-431
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