Modified p-y curves for monopile foundation with different length-to-diameter ratio

The soil reaction of the monopile foundation subjected to lateral loading in offshore wind turbines is typically assessed relying on p-y curves advocated by API. However, this method inadequate for gradually increasing diameters and significantly underestimates confinement. In present works, a 3D pile-soil interaction finite element model was first established, considering suction strain hardening characteristics normally consolidated clay China’s sea. Modifications API were accomplished comparative process between resistance-displacement retrieved from representative expression. Furthermore, prediction accuracy corrected has been proved forecasting bearing capacity with varying length-to-diameter ratios, which also demonstrates that modified could successfully reflect confinement flexible piles. It provides an approach assess deformation response horizontal ultimate monopiles different ratios.