On the influence of multiple episodes of cyclic loading and reconsolidation on the behavior of monopiles embedded in fine-grained soils

This article summarizes the numerical predictions of centrifuge tests consisting of monopiles for offshore wind turbines subjected to multiple episodes of cyclic loading and reconsolidation. The monopiles present diameters of four and six meters and were embedded in a soft normally consolidated Malaysian kaolin. The centrifuge results suggest that the lateral soil-pile stiffness degrades after cyclic loading, but it is fully recovered and exceeds its initial magnitude up to 20% after the reconsolidation episodes. A finite element model was constructed in the software Tochnog Professional to back-calculate the centrifuge tests. The behavior of the kaolin was simulated with the hypoplastic model for clays by Mašín (2014) with intergranular strain by Niemunis and Herle (1997). For the calibration of the constitutive model, undrained triaxial tests were performed. At the end of the manuscript, the influence of reconsolidation stages on the design of monopiles and the capabilities of the constitutive model to reproduce this behavior are discussed.

• Autores: Duque, Jose; Ochmański, Maciej; Mašín, David
• Tipo de recurso: Part of book
• Fecha de publicación: 2022
• Institución: Corporación Universidad de la Costa
• Repositorio: REDICUC - Repositorio CUC
• Idioma: eng
• OAI Identifier: oai:repositorio.cuc.edu.co:11323/10322
• Acceso en línea: https://hdl.handle.net/11323/10322; https://repositorio.cuc.edu.co/
• Palabra clave: Monopiles; Reconsolidation; Cyclic loading; Hypoplasticity
• Rights: openAccess
• License: Atribución-NoComercial-CompartirIgual 4.0 Internacional (CC BY-NC-SA 4.0)