Developing an Efficiency Relationship for Tapered Pile Groups in Sand Using Analytical and 3D Numerical Analysis

Shafaghat, Amin

Developing an Efficiency Relationship for Tapered Pile Groups in Sand Using Analytical and 3D Numerical Analysis

Shafaghat, Amin

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Publication Type:: Thesis
Issue Date:: 2022

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Field	Value	Language
dc.contributor.author	Shafaghat, Amin
dc.date.accessioned	2022-08-04T00:12:30Z
dc.date.available	2022-08-04T00:12:30Z
dc.date.issued	2022
dc.identifier.uri	http://hdl.handle.net/10453/159593
dc.description	University of Technology Sydney. Faculty of Engineering and Information Technology.	en_US.UTF-8
dc.description.abstract	This study aims to establish an equation for obtaining the optimum tapering angle of bored tapered piles correlated to the pile geometry and sand properties varying with the relative density. The optimum tapering angle corresponds to the maximum axial bearing capacity while keeping the volume of material in the tapered pile the same as the counterpart straight cylindrical pile. Firstly, analytical formulations are developed to estimate the axial bearing capacity of bored tapered piles embedded in sand. The finite element method is also adopted to conduct the numerical modelling and to calibrate the model parameters of the proposed analytical equations, considering the soil nonlinearities and interaction between the tapered pile and the surrounding soil subjected to axial loading. On the other hand, a new simple equation for the prediction of pile group efficiency considering the effect of tapering angle in cohesionless soil is developed. Finally, the behaviour of step-tapered piles is analysed numerically.	en_US.UTF-8
dc.format	Thesis (PhD)
dc.language.iso	en_US	en_US.UTF-8
dc.relation	https://opus.lib.uts.edu.au/bitstream/10453/159593/2/02whole.pdf
dc.rights	The author owns the copyright in this thesis including all reproduction and reuse rights for the work. The work may not be altered without the permission of the copyright owner. Attribution is essential when quoting or paraphrasing from this thesis.
dc.rights	au.edu.uts.lib/ppc
dc.rights	info:eu-repo/semantics/openAccess
dc.title	Developing an Efficiency Relationship for Tapered Pile Groups in Sand Using Analytical and 3D Numerical Analysis	en_US.UTF-8
dc.type	Thesis
utslib.copyright.status	open_access	*

Abstract:

This study aims to establish an equation for obtaining the optimum tapering angle of bored tapered piles correlated to the pile geometry and sand properties varying with the relative density. The optimum tapering angle corresponds to the maximum axial bearing capacity while keeping the volume of material in the tapered pile the same as the counterpart straight cylindrical pile. Firstly, analytical formulations are developed to estimate the axial bearing capacity of bored tapered piles embedded in sand. The finite element method is also adopted to conduct the numerical modelling and to calibrate the model parameters of the proposed analytical equations, considering the soil nonlinearities and interaction between the tapered pile and the surrounding soil subjected to axial loading. On the other hand, a new simple equation for the prediction of pile group efficiency considering the effect of tapering angle in cohesionless soil is developed. Finally, the behaviour of step-tapered piles is analysed numerically.

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http://hdl.handle.net/10453/159593