Finite element modelling of laterally loaded piles in a stiff glacial clay till at Cowden

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Title: Finite element modelling of laterally loaded piles in a stiff glacial clay till at Cowden
Authors: Zdravkovic, L
Taborda, D
Potts, D
Abadias Gomez, D
Burd, HJ
Byrne, BW
Gavin, K
Houlsby, GT
Jardine, RJ
Martin, CM
McAdam, RA
Ushev, E
Item Type: Journal Article
Abstract: The PISA project was a combined field testing/numerical modelling study with the aim ofdevelopingimproved design procedures for large diameter piles subjected to lateral loading. This paper describes the development ofa three-dimensional finite elementmodel for the medium-scale pile tests that were conducted in Cowden tillas 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 enhancedversion of the modified Cam clay model was employedin the numerical analyses, featuring a non-linear Hvorslevsurface, a generalised shape for the yield and plastic potential surfaces in the deviatoric planeand 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 behaviourfora range of pile geometrieswas observed, demonstrating the accuracy of the numerical model and the adequacy of the calibration process for theconstitutive model.The developed numerical modelconfirmed the premise of the PISA design method that site-specific ground characterisation and advanced numerical modelling candirectly facilitate the development of additionalsoil reaction curves for use in new design models for laterally loaded piles in a stiff clay till.
Date of Acceptance: 20-Nov-2018
ISSN: 0016-8505
Publisher: Thomas Telford
Journal / Book Title: Géotechnique
Copyright Statement: This paper is embargoed until publication.
Sponsor/Funder: DONG Energy Wind Power A/S
Geotechnical Consulting Group
Funder's Grant Number: 030-13-0133
Keywords: 0905 Civil Engineering
Geological & Geomatics Engineering
Publication Status: Accepted
Embargo Date: publication subject to indefinite embargo
Appears in Collections:Faculty of Engineering
Civil and Environmental Engineering

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