Three-dimensional Finite Element Modeling Of Laterally Loaded Single Passive Pile In Sandy Soils

In this thesis, the behavior of a single passive pile subjected to uniform and/ orrntriangular lateral soil movement has been carried out by means of a three-dimensionalrnfinite element numerical model using PLAXIS 3D software. The Mohr-Coulombrnconstitutive material law, and linear elastic - plastic model was used to model thernsurrounding soil and the embedded pile respectively. The accuracy of the threerndimensional finite element analysis were validated using published model laboratoryrntest results, and also with a three dimensional finite difference analysis software,rnFLACrn. It was concluded that the 3D finite element analysis results agree with rnpublished laboratory test results, and FLACrn3Drn results in terms of the shape, andrnmagnitude of the maximum bending moment, shear force and pile deflection profilerncurves. A parametric study was carried out to investigate the effect shape of soilrnmovement profile, soil stiffness, pile diameter and the ratio of Lm/Ls. The results of thernparametric study were in good agreement with published laboratory results. Thernnumerical results indicated that the distribution of the bending moment and pilerndeflection along with the depth of the pile vary considerably, and the results were inrngood agreement the real pile behavior when adopting a variation of soil stiffness withrndepth instead of choosing a constant soil stiffness value. rn3D

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