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Title: A numerical model for foundation settlements due to deformation accumulation in granular soils under repeated small amplitude dynamic loading
Authors: François, Stijn ×
Karg, C
Haegeman, Wim
Degrande, Geert #
Issue Date: Feb-2010
Publisher: John Wiley
Series Title: International Journal for Numerical and Analytical Methods in Geomechanics vol:34 issue:3 pages:273-296
Abstract: Repeated small amplitude dynamic loading of the soil in the vicinity of buildings, as arising from traffic or construction activities, may cause differential foundation settlements and structural damage in this paper, a numerical model for soils under repeated dynamic loading is formulated. It is assumed that the dynamic part of the loading is small with respect to the static part, reflecting the stress conditions in the soil underneath buildings. As the plastic deformation in the soil is only observed after a considerable amount of dynamic loading cycles, only the accumulation of the average plastic deformation is considered. The model accounts for the dependency of the deformation on the stress conditions and the dynamic loading amplitude. The accumulation model is implemented in a finite element framework. using a consistent tangent approach in combination with a backward Euler integration scheme. A triaxial test is considered in a first numerical example. The available analytical solution for this problem allows to validate the numerical implementation Second. the differential settlement of a two-storey building founded on loose sandy soil under repeated vehicle passages is considered. The differential foundation settlement causes the stresses to increase at the bottom of the wall, which may result in damage Copyright (C) 2009 John Wiley & Sons, Ltd.
ISSN: 0363-9061
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Structural Mechanics Section
Studiegebied Industriële Wetenschappen & Technologie - VIVES Noord
× corresponding author
# (joint) last author

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