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NUMERICAL ANALYSIS OF THE BEHAVIOUR OF A FLEXIBLE PILE FOUNDATION VERSUS A RIGID ONE UNDER LATERAL CYCLIC ACTION

Loretta Batali

First published: 2018-06-20https://doi.org/10.5593/sgem2018/1.2/s02.064View metrics

Abstract

The purpose of the present paper is to analyse the behaviour of a flexible pile foundation versus a rigid one when submitted to lateral cyclic action coming from waves or wind, through numerical modelling using 3D finite elements. The comparison elements are: the maximum pile head displacement and the evolution of the maximum bending moment. The numerical modelling has been performed using the software CESAR-LCPC [1]. The study has been performed for 15 cycles, but the numerical model has also served to create some extrapolation functions allowing the analysis of a high number of cycles ? up to 100000. The numerical model has been initially calibrated using the results of some small-scale centrifuge experimental tests performed by Frederic Rosquo?t [2], officially obtained from IFSTTAR, Nantes [3]. The experimental results used for calibrating the numerical model were performed for a flexible pile. After that, on the calibrated model, the flexible pile has been changed into a rigid one and a comparison between them regarding the behaviour under lateral cyclic action has been performed.

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Publication details

Title
NUMERICAL ANALYSIS OF THE BEHAVIOUR OF A FLEXIBLE PILE FOUNDATION VERSUS A RIGID ONE UNDER LATERAL CYCLIC ACTION
Authors
Loretta Batali
Proceedings
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 18th International Multidisciplinary Scientific GeoConference SGEM2018, Science and Technologies in Geology, Exploration and Minining
Publisher
STEF92 Technology
Year
2018
Pages
505-512
SWS Citekey
Batali20182505512
ISSN
1314-2704
ISBN
978-619-7408-36-2
Language
en
Publication type
Conference Paper
Keywords
lateral cyclic actionnumerical modellingflexible pile foundationrigid pile foundationcentrifuge
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