Finite-element modelling of laterally loaded piles in a stiff glacial clay till at Cowden
File(s)
Published version
Author(s)
Type
Journal Article
Abstract
The PISA project was a combined field testing/numerical modelling study with the aim of developing improved design procedures for large-diameter piles subjected to lateral loading. This paper describes the development of a three-dimensional finite-element model for the medium-scale pile tests that were conducted in Cowden till as part of the PISA work. The paper places particular emphasis on the consistent interpretation of the soil data determined from the available field and laboratory information. An enhanced version of the modified Cam clay model was employed in the numerical analyses, featuring a non-linear Hvorslev surface, a generalised shape for the yield and plastic potential surfaces in the deviatoric plane and a non-linear formulation for the elastic shear modulus. Three-dimensional finite-element analyses were performed prior to the field tests. Excellent agreement between the measured and simulated behaviour for a range of pile geometries was observed, demonstrating the accuracy of the numerical model and the adequacy of the calibration process for the constitutive model. The developed numerical model confirmed the premise of the PISA design method that site-specific ground characterisation and advanced numerical modelling can directly facilitate the development of additional soil reaction curves for use in new design models for laterally loaded piles in a stiff clay till.
Date Issued
2020-11-01
Date Acceptance
2018-11-20
Citation
Geotechnique: international journal of soil mechanics, 2020, 70 (11), pp.999-1013
ISSN
0016-8505
Publisher
ICE Publishing
Start Page
999
End Page
1013
Journal / Book Title
Geotechnique: international journal of soil mechanics
Volume
70
Issue
11
Copyright Statement
© 2019 The Author(s). Published with permission by the ICE under the CC-BY 4.0 license.
(http://creativecommons.org/licenses/by/4.0/)
(http://creativecommons.org/licenses/by/4.0/)
Sponsor
DONG Energy Wind Power A/S
DONG Energy Wind Power A/S
Geotechnical Consulting Group
Identifier
https://www.icevirtuallibrary.com/doi/10.1680/jgeot.18.PISA.005
Grant Number
030-13-0133
030-13-0133
CISM_P60087
Subjects
Science & Technology
Technology
Engineering, Geological
Engineering
constitutive relations
design
finite-element modelling
numerical modelling
piles & piling
soil/structure interaction
0905 Civil Engineering
0907 Environmental Engineering
0914 Resources Engineering and Extractive Metallurgy
Geological & Geomatics Engineering
Publication Status
Published
Date Publish Online
2019-11-15