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Behaviour of batter piles under dynamic loads
Published in 19th ICSMGE Secretariat
2017
Volume: 2017-September
   
Pages: 831 - 834
Abstract
Batter piles have performed quite well in some cases and also quite badly in some cases over the past earthquakes there by arising credibility issues in their performance under dynamic loads. To address this problem, a comprehensive 3D finite element studies were carried out on 2x1 pile groups embedded in clay using ABAQUS. The dynamic analysis was carried out on the following configuration of the pile groups:(a) both vertical piles, (b) one vertical and another batter pile, and (c) both batter piles. The angle of inclination of batter piles is taken as 20°. The following soil profiles are considered: linearly increasing stiffness with depth and non uniform variation (varied profile I and II). The pile is modelled as a beam element and soil as solid brick elements. The soil is characterized with drucker prager cap model and pile with linear elasticity material model. The sinusoidal loading was applied at the pile head with frequency varying between 1 to 25 Hz. The analysis is run using dynamic implicit scheme. The finite element results are validated using the experimental studies on batter piles reported in literature. The results are presented in terms of frequency displacement response and bending curves. It is found that the batter pile groups shown 50% reduction of displacements than the vertical pile group, at frequencies lesser than their resonant frequency. © 2017 19th ICSMGE Secretariat. All rights reserved.
About the journal
JournalICSMGE 2017 - 19th International Conference on Soil Mechanics and Geotechnical Engineering
Publisher19th ICSMGE Secretariat
Open AccessNo
Concepts (17)
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    ABAQUS
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    Dynamic loads
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    Dynamics
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    Finite element method
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    Geotechnical engineering
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    Natural frequencies
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    Soil mechanics
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    Soils
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    3-D FINITE ELEMENTS
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    BATTER PILES
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    Displacement response
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    DRUCKER-PRAGER CAP MODELS
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    DYNAMIC IMPLICIT
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    LINEAR ELASTICITY
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    Material modeling
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    Sinusoidal loading
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    Piles