Simulation of Pile Load Test Using Finite Element Method
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Date
2015-10
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Addis Ababa University
Abstract
Pile foundations are widely used in different construction site, to support loads from superstructures. Study on predicting bearing capacity and other parameters of pile foundations is still attracting interests of geotechnical researchers. Besides the laboratory or field tests, finite element method is used increasingly to deal with such problems.
In this thesis, simulation of pile loading test by using finite element method is dealt with in detail for different loading and soil conditions. The soil- pile interaction is best simulated by different constitutive models and equations that are based on experimental findings and embodied in the numerical analysis such as the finite element method.
An axisymmetric finite element model using the program ABAQUS is used in order to establish numerical models and analysis procedures that help to simulate actual pile load tests.
In the finite element analysis, the pile is assumed to be linear elastic and for the different soil layers two constitutive models, namely, Mohr Coulomb and Cap Plasticity Model are used. Influence of mesh and interface elements is discussed and the result of the FEM analysis are compared with results of actual pile load tests.
A parametric study is done based on soil finding that affect the load settlement behavior of the pile.
KEYWORDS: constitutive model, finite element method (FEM), soil pile interaction, cap hardening, pile foundation.
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Keywords
Constitutive Model; Finite Element Method (FEM); Soil Pile Interaction,;Cap Hardening; Pile Foundation