Communication Dans Un Congrès Année : 2023

Floating offshore wind turbine piles under horizontal cyclic loading: calibration and performance of advanced soil constitutive models

Résumé

Driven by the demand for renewable energies, the development of floating offshore wind turbines (FOWT) has recently raised significant interest, as stronger and more consistent wind currents can be reached with less space constraints. In a previous study, the behaviour of steel piles, used as a solution to anchor FOWT, was numerically investigated, but it was concluded that relatively simple elastoplastic models are not able to properly capture the soil behaviour under multi-directional lateral loadings. Here, three different constitutive models (Mohr-Coulomb, CHSoil and SANISAND) are briefly presented and calibrated based on experimental data found in the literature. Then, a pile founded in dense homogeneous sand is modelled using a three-dimensional finite volume program. The performances of the different models are compared for a specific case in which the pile is subjected to mono-directional lateral cyclic loading as a preliminary investigation of its response under multi-directional loading. The results show that the SANISAND model exhibits a more realistic evolution of the pile head displacement compared to the two more simplistic models.
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Dates et versions

hal-04908984 , version 1 (23-01-2025)

Identifiants

Citer

Rami Chalhoub, Orianne Jenck, Christophe Dano. Floating offshore wind turbine piles under horizontal cyclic loading: calibration and performance of advanced soil constitutive models. 10th European Conference on Numerical Methods in Geotechnical Engineering, Jun 2023, Londres, United Kingdom. ⟨10.53243/NUMGE2023-271⟩. ⟨hal-04908984⟩
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