Load-displacement and bearing capacity of foundations on granular soils using a multi-surface kinematic constitutive soil model

M. Banimahd, P. K. Woodward

    Research output: Contribution to journalArticle

    6 Citations (Scopus)

    Abstract

    A finite element approach based on an advanced multi-surface kinematic constitutive model is used to evaluate the bearing capacity of footings resting on granular soils. Unlike simple elastic-perfectly plastic models, often applied to granular foundation problems, the present model realistically accounts for stress dependency of the friction angle, strain softening-hardening and non-associativity. After the model and its implementation into a finite element code are briefly discussed, the numerical difficulty due to the singularity at the footing edge is addressed. The bearing capacity factor N? is then calculated for different granular materials. The effect of footing size, shape, relative density and roughness on the ultimate bearing capacity are studied and the computed results compare very favourably with the general experimental trends. In addition, it is shown that the finite element solution can clearly represent counteracting mechanisms of progressive failure which have an important effect on the bearing capacity of granular foundations. Copyright © 2006 John Wiley & Sons, Ltd.

    Original languageEnglish
    Pages (from-to)865-886
    Number of pages22
    JournalInternational Journal for Numerical and Analytical Methods in Geomechanics
    Volume30
    Issue number9
    DOIs
    Publication statusPublished - Aug 2006

    Keywords

    • Bearing capacity
    • Finite element
    • Footing
    • Granular soil
    • Kinematic model

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