Numerical modelling of the undrained vertical bearing capacity of shallow foundations

Masters Thesis


Quoc, Van Nguyen. 2008. Numerical modelling of the undrained vertical bearing capacity of shallow foundations. Masters Thesis Master of Philosophy. University of Southern Queensland.
Title

Numerical modelling of the undrained vertical bearing capacity of shallow foundations

TypeMasters Thesis
Authors
AuthorQuoc, Van Nguyen
SupervisorMerifield, Richard Simon
Tran-Cong, Thanh
Khennane, Amar
Buttsworth, David
Institution of OriginUniversity of Southern Queensland
Qualification NameMaster of Philosophy
Number of Pages189
Year2008
Abstract

[Abstract]The bearing capacity of foundations is a fundamental problem in geotechnical engineering. For all structures placed on a soil foundation, geotechnical engineers must ensure that the soil has sufficient load carrying capacity so that the foundation does not collapse or become unstable under any conceivable loading. The ultimate bearing capacity is the magnitude of bearing pressure at which the supporting ground is expected to fail in shear, i.e. a collapse will take place.

During the last fifty years various researchers have proposed approximate techniques to estimate the short term undrained bearing capacity of foundations. The majority of existing theories are not entirely rigorous and contain many underlying assumptions. As a consequence, current design practices include a great deal of empiricism. Throughout recent decades, there has also been a dramatic expansion in numerical techniques and analyses, however, very few rigorous numerical analyses have been performed to
determine the ultimate bearing capacity of undrained soils.

In this study, finite element analysis has been used to analyse a range of bearing capacity problems in undrained soil. The numerical models account for a range of variables
including footing size, shape, embedment depth, soil layering and undrained bearing capacity of footings on slopes.

By using the powerful ability of computers a comprehensive set of solutions have been obtained therefore reducing the uncertainties apparent in previous solutions.

Keywordsbearing capacity; foundations; geotechnical engineers; theories; undrained soils
ANZSRC Field of Research 2020401306. Surveying (incl. hydrographic surveying)
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https://research.usq.edu.au/item/9z575/numerical-modelling-of-the-undrained-vertical-bearing-capacity-of-shallow-foundations

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