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Experimental and computational analysis of hybrid suction caisson foundation for next-generation offshore wind turbines.

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Title: Experimental and computational analysis of hybrid suction caisson foundation for next-generation offshore wind turbines.
Authors: Kumar, Subodh1 (AUTHOR) subodhpl277@gmail.com, Sah, Babita1 (AUTHOR), Chaudhary, Babloo1 (AUTHOR), P. K., Akarsh1 (AUTHOR), Sajan, Manu K.2 (AUTHOR)
Source: Marine Georesources & Geotechnology. Jul2026, Vol. 44 Issue 7, p2080-2093. 14p.
Subjects: Building foundations, Bearing capacity of soils, Computer simulation, Testing laboratories, Offshore wind power plants, Digital computer simulation, Renewable energy sources
Abstract: A suction caisson is a successful foundation for an offshore wind turbine (OWT). High-capacity next-generation wind turbines become essential due to the rising demand for renewable energy. To support such turbines, a new foundation is required that can sustain the greater environmental loads. To satisfy the requirements of high-capacity OWTs, a hybrid suction caisson (HSC) foundation is developed in the study. The performance of the HSC is examined by conducting a number of physical model tests. Experimental results show that horizontal bearing capacity improved by 69.99% compared with a conventional suction caisson foundation. The increase in external skirt depth of HSC from 0.25L to 0.5L (L = 100 mm; inner skirt depth) and the increase in lid diameter from 250 to 300 mm show the 20.05% and 21.82% improvement in horizontal bearing capacity, respectively. Test results of the study reveal a significant improvement in its performance compared to a conventional caisson. Numerical simulations are also carried out to elucidate the mechanism. Highlights: Development of a hybrid suction caisson (HSC) foundation. Foundation for next generation high-capacity offshore wind turbines (OWTs). A series of 1g model tests to evaluate performance of the novel HSC foundation. Advance 3D Numerical simulation for elucidating the mechanisms. Parametric study to explore the effects of various parameters. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
Description
Abstract:A suction caisson is a successful foundation for an offshore wind turbine (OWT). High-capacity next-generation wind turbines become essential due to the rising demand for renewable energy. To support such turbines, a new foundation is required that can sustain the greater environmental loads. To satisfy the requirements of high-capacity OWTs, a hybrid suction caisson (HSC) foundation is developed in the study. The performance of the HSC is examined by conducting a number of physical model tests. Experimental results show that horizontal bearing capacity improved by 69.99% compared with a conventional suction caisson foundation. The increase in external skirt depth of HSC from 0.25L to 0.5L (L = 100 mm; inner skirt depth) and the increase in lid diameter from 250 to 300 mm show the 20.05% and 21.82% improvement in horizontal bearing capacity, respectively. Test results of the study reveal a significant improvement in its performance compared to a conventional caisson. Numerical simulations are also carried out to elucidate the mechanism. Highlights: Development of a hybrid suction caisson (HSC) foundation. Foundation for next generation high-capacity offshore wind turbines (OWTs). A series of 1g model tests to evaluate performance of the novel HSC foundation. Advance 3D Numerical simulation for elucidating the mechanisms. Parametric study to explore the effects of various parameters. [ABSTRACT FROM AUTHOR]
ISSN:1064119X
DOI:10.1080/1064119X.2025.2612335