On the application of constitutive models with an emphasis on offshore engineering problems
File(s)
Published version
Author(s)
Grammatikopoulou, Angeliki
Schroeder, Felix
Sailer, Eleonora
Taborda, David
Potts, David
Type
Conference Paper
Abstract
Numerical analysis is increasingly being used in the development of geotechnical design methodologies and in their application in practice. The results of any numerical analysis depend critically on the constitutive models chosen to represent the soils and the parameters adopted to model their response. This paper presents an overview of the authors’ experience in the application of constitutive models to simulate the response of soils that are commonly encountered in offshore engineering problems and specifically offshore wind farm sites. The paper is divided in two parts. The first part studies the modelling of sand deposits with varying density, using two elasto-plastic constitutive models, i.e. a state parameter-dependent constitutive model based on the Mohr-Coulomb failure criterion (Taborda et al., 2018) and a strain softening Mohr-Coulomb model (Potts et al. 1990). It details the derivation of model parameters and calibration of the models, on the basis of commercial high-quality in-situ and laboratory test data, and compares the models’ predictions in the analysis of an example monopile foundation. The second part examines the modelling of stiff clays. Particular attention is paid to the influence of plasticity on the clays’ response. The paper highlights the challenges in choosing appropriate models and model parameters to match the response measured as part of high-quality ground investigations.
Date Issued
2023-06-26
Date Acceptance
2023-06-18
Citation
Proceedings of the 10th NUMGE 2023, 2023
Publisher
International Society for Soil Mechanics and Geotechnical Engineering (ISSMGE)
Journal / Book Title
Proceedings of the 10th NUMGE 2023
Copyright Statement
© Authors: All rights reserved, 2023.
Source
10th European Conference on Numerical Methods in Geotechnical Engineering
Publication Status
Published
Start Date
2023-06-26
Finish Date
2023-06-28
Coverage Spatial
London, UK