Three-Dimensional Finite Element Modeling of Laterally Loaded Single Passive Pile in Sandy Soils
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Date
2020
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Publisher
Addis Ababa University
Abstract
In this thesis, the behavior of a single passive pile subjected to uniform and/ or
triangular lateral soil movement has been carried out by means of a three-dimensional
finite element numerical model using PLAXIS 3D software. The Mohr-Coulomb
constitutive material law, and linear elastic - plastic model was used to model the
surrounding soil and the embedded pile respectively. The accuracy of the three
dimensional finite element analysis were validated using published model laboratory
test results, and also with a three dimensional finite difference analysis software,
FLAC
. It was concluded that the 3D finite element analysis results agree with
published laboratory test results, and FLAC
3D
results in terms of the shape, and
magnitude of the maximum bending moment, shear force and pile deflection profile
curves. A parametric study was carried out to investigate the effect shape of soil
movement profile, soil stiffness, pile diameter and the ratio of Lm/Ls. The results of the
parametric study were in good agreement with published laboratory results. The
numerical results indicated that the distribution of the bending moment and pile
deflection along with the depth of the pile vary considerably, and the results were in
good agreement the real pile behavior when adopting a variation of soil stiffness with
depth instead of choosing a constant soil stiffness value.
3D
Description
Keywords
Sandy Soils, Laterally Loaded Single Passive Pile, Three-Dimensional, Finite Element Modeling