Assessment reveals scour impacts on bearing capacity in MGB foundations for offshore wind, indicating design optimizations.
Scour at offshore wind turbine foundations compromises their structural stability. This study investigates scour characteristics and their impact on the ultimate bearing capacity of a novel Monopile-Gravity-Bucket (MGB) hybrid foundation. Utilizing coupled CFD-DEM and finite element analyses, this research examines scour development under varying bucket geometries. Results reveal similar scour morphology as other large diameter structures, with maximum scour depth decreasing as the bucket’s diameter and height increase. The consequent reduction in lateral bearing capacity can reach approximately 20%. These findings provide critical insights for optimizing MGB foundation design and implementing effective scour protection strategies.
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Li et al. (2025) studied this question.
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