Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Numerical analysis of lateral – Moment capacity of bucket foundations for offshore wind turbine in sand
Abstract This paper reports the lateral – moment bearing capacity of bucket foundations under lateral loading in sand. The Modified Mohr-Coulomb (MMC) model is adopted to capture the hardening – softening behaviour in medium dense and dense sands within a finite element (FE) modelling framework. The FE model performance is assessed against available field test data as well as analytical solutions showing a relatively good agreement. A series of parametric study is conducted to investigate the effects of bucket aspect ratio, bucket diameter, load eccentricity, vertical load and relative density of sand on the lateral - moment bearing capacity of the bucket. Comparisons are drawn between the conventional Mohr-Coulomb (MC) model and the stress dependent MMC model highlighting the role of sand dilatancy in mobilising the lateral moment capacity. Based on the FE results, a simple stepwise calculation framework is proposed for two scenarios: (i) to predict the lateral - moment bearing capacity of the bucket if the bucket dimensions are known, and (ii) to design the bucket dimensions for a known required bucket capacity.
Highlights The modified Mohr-Coulomb (MMC) model is adopted to capture the behaviour of medium dense and dense sands. The effects of bucket dimension, load eccentricity, vertical load and relative density of sand are investigated. Based on the FE results, simple stepwise calculation frameworks are proposed for two scenarios.
Numerical analysis of lateral – Moment capacity of bucket foundations for offshore wind turbine in sand
Abstract This paper reports the lateral – moment bearing capacity of bucket foundations under lateral loading in sand. The Modified Mohr-Coulomb (MMC) model is adopted to capture the hardening – softening behaviour in medium dense and dense sands within a finite element (FE) modelling framework. The FE model performance is assessed against available field test data as well as analytical solutions showing a relatively good agreement. A series of parametric study is conducted to investigate the effects of bucket aspect ratio, bucket diameter, load eccentricity, vertical load and relative density of sand on the lateral - moment bearing capacity of the bucket. Comparisons are drawn between the conventional Mohr-Coulomb (MC) model and the stress dependent MMC model highlighting the role of sand dilatancy in mobilising the lateral moment capacity. Based on the FE results, a simple stepwise calculation framework is proposed for two scenarios: (i) to predict the lateral - moment bearing capacity of the bucket if the bucket dimensions are known, and (ii) to design the bucket dimensions for a known required bucket capacity.
Highlights The modified Mohr-Coulomb (MMC) model is adopted to capture the behaviour of medium dense and dense sands. The effects of bucket dimension, load eccentricity, vertical load and relative density of sand are investigated. Based on the FE results, simple stepwise calculation frameworks are proposed for two scenarios.
Numerical analysis of lateral – Moment capacity of bucket foundations for offshore wind turbine in sand
Cheng, L. (Autor:in) / Ullah, S.N. (Autor:in) / Hu, Y. (Autor:in) / Zhou, M. (Autor:in) / Jiang, W. (Autor:in)
Marine Structures ; 87
16.10.2022
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
| British Library Conference Proceedings | 2018
Tensile-loaded suction bucket foundations for offshore structures in sand
| BASE | 2020