A generic approach to soil—structure interaction considering the effects of soil heterogeneity

Breysse, Denys; Niandou, Halidou; Elachachi, Sidi Mohammed; Houy, Laurent

doi:10.1680/geot.55.2.143.59528

Cited by 3 publications

(4 citation statements)

References 6 publications

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“…The first attempts have aimed at extending the use of lumped-parameter models and Winkler spring models to the stochastic domain. In particular, the coefficients of these simplified models are randomized, thus leading to random boundary impedances [145,146,147,148,149], modeled very cost-effectively. The main inconvenient of this approach, is that it is impossible to relate the fluctuations of the physical properties of the environment to the fluctuations of the coefficients, because the latter are usually identified by regression.…”

Section: Influence Of Stochastic Environment Propertiesmentioning

confidence: 99%

Dynamics of structures coupled with elastic media—A review of numerical models and methods

Clouteau

Cottereau

Lombaert

2013

Journal of Sound and Vibration

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This paper reviews issues and developments in the field of structure-environment interaction problems, in which the environment is an elastic body, possibly unbounded. It covers in particular the fields of soil-structure interaction, ground-borne noise and vibration emitted by transportation systems and wave diffraction by obstacles in an elastic medium. The general setting for a linear bounded structure coupled to an unbounded linear environment through a bounded interface is first recalled, and the domain decomposition technique classically used for its description is put up. Extensions for the cases of non-linear structure and uncertain environment are then discussed. Finally, the ongoing research in the fields of unbounded interface, moving interface, and multiple interfaces are reviewed and summarized.

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Section: Influence Of Stochastic Environment Propertiesmentioning

confidence: 99%

Dynamics of structures coupled with elastic media—A review of numerical models and methods

Clouteau

Cottereau

Lombaert

2013

Journal of Sound and Vibration

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“…Unlike the parameters h and m which showed weak or no correlation with the SFSI effects, the probability of detrimental SFSI scenarios (DSFSI) is strongly correlated with the stiffness ratio ω . F o r P e e r R e v i e w [20] …”

Section: Correlation Between Detrimental Scenarios and Key System Parmentioning

confidence: 99%

“…A rational way for achieving this is to make use of a comprehensive probabilistic evaluation which is an approach gaining growing attention in the geotechnical engineering community [19] and investigation of SFSI effects [20][21][22][23][24]. This study aims at investigating the complex dynamic inertial SFSI problem through a robust Monte Carlo simulation and quantifying the influence of foundation flexibility on the structural seismic response.…”

Section: Introductionmentioning

confidence: 99%

Probabilistic evaluation of soil–foundation–structure interaction effects on seismic structural response

Moghaddasi

Cubrinovski

Chase

et al. 2011

Earthq Engng Struct Dyn

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Complex seismic behaviour of soil-foundation-structure (SFS) systems together with uncertainties in system parameters and variability in earthquake ground motions result in a significant debate over the effects of soil-foundation-structure interaction (SFSI) on structural response. The aim of this study is to evaluate the influence of foundation flexibility on the structural seismic response by considering the variability in the system and uncertainties in the ground motion characteristics through comprehensive numericalsimulations. An established rheological soil-shallow foundation-structure model with equivalent linear soil behaviour and nonlinear behaviour of the superstructure has been used. A large number of models incorporating wide range of soil, foundation and structural parameters were generated using a robust Monte Carlo simulation. In total, 4.08 million time-history analyses were performed over the adopted models using an ensemble of 40 earthquake ground motions as seismic input. The results of the analyses 1

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“…La fonction d'autocorrélation choisie est de forme exponentielle avec une longueur de corrélation égale à la longueur de la semelle filante. De nombreuses études ont montré que la longueur de corrélation la plus influente sur le comportement d'un ouvrage varie, selon le paramètre étudié (tassement, renversement, moment fléchissant, ...), entre 0,5 et 1,5 fois la longueur de l'ouvrage (Fen ton et Griffiths, 2002 ;Houy et al, 2005 ;Breysse et al, 2005 ;Niandou et Breysse, 2007, pour les plus récen tes). La figure 8 illustre la génération de deux champs de valeurs de k de moyenne 20 000 kN/m3, de coeffi cient de variation de 0,2 et de longueur de corrélation le de 10 m. …”

Section: Influence De La Variabilité Naturelleunclassified

Influence du retrait et de la variabilité naturelle des sols argileux sur le comportement des fondations de maisons individuelles

Denis¹,

Elachachi²,

Niandou³

et al. 2007

Rev. Fr. Geotech.

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Les maisons individuelles sont particulièrement sensibles aux tassem ents différentiels provoqués par les phénom ènes de retrait-gonflement des sols argileux. La reconnaissance sur les sites de construction de la présence de sols argileux est donc primordiale. La méthode VLF-R (Very Low Frequency) en mode résistivité (R), testée sur un site de 25 000 m2, s'avère être un outil performant pour atteindre cet objectif mais égalem ent pour mettre en évidence la variabilité lithologique des sols sur un site. De telles informations sont ensuite utilisées dans un m odèle simple de comportement de semelle filante sur sol élastique (modèle de Winkler) développé en élém ents finis. Ce modèle permet d'évaluer l'amplitude des tassem ents différentiels et des moments fléchissants dans une semelle filante en fonction de la variabilité longitudinale des propriétés du sol et d'un retrait du sol sous la fondation. Il apparaît que la variabilité des propriétés mécaniques des sols, tout comme un retrait, entraînent des déplacements et des efforts internes dans la fondation qui peuvent être domm ageables pour la structure. This model is developed through a finite element model in which a 1D structure (wall footing) rests on a spatially varying soil described with Winkler-type springs. This model is used to study induced effects of soil variations (described by the means of a spatial correlation function), shrinkage, differential settlements and critical bending moment values that cannot be predicted if the soil is assumed homogeneous or shrinkage left out under the wall footing. These different results give some tracks to revise the wall foundation design accordingly.

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A generic approach to soil—structure interaction considering the effects of soil heterogeneity

Cited by 3 publications

References 6 publications

Dynamics of structures coupled with elastic media—A review of numerical models and methods

Dynamics of structures coupled with elastic media—A review of numerical models and methods

Probabilistic evaluation of soil–foundation–structure interaction effects on seismic structural response

Influence du retrait et de la variabilité naturelle des sols argileux sur le comportement des fondations de maisons individuelles

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