| Suction anchors, as a reliable anchoring foundation type for offshore renewable energy, have excellent capacity performance and
convenient installation. However, for the complex condition of layered soil in practice, there is few studies related to the anti-uplift capacity
of suction caisson in layered soil. This study takes the actual layered soil conditions of a wind farm as an example, utilizing the finite
element analysis software ABAQUS to establish an interaction model with the suction anchor founded in layered soil. This study analyses
effects of drag angles and padeye depths on uplift capacities, with the corresponding failure modes of suction anchors compared. The
optimal positions for mooring points under different tension angles are identified, and the impact of layered soil properties on the soil failure
slip surface is investigated. Finally, the mechanism of suction anchors under inclined drag load in complex layered soils is highlighted. This
paper provides a set of feasible design methods for the inclined drag capacity of suction anchors, offering a reference for the application of
suction anchors in offshore renewable energy industry. |
