A model for the 3D kinematic interaction analysis of pile groups in layered soils / Dezi Francesca in Earthquake engineering structural dynamics, Vol. 38 N° 11 (Septembre 2009)  

Public ISBD [article]  inEarthquake engineering structural dynamics > Vol. 38 N° 11 (Septembre 2009) . - pp. 1281-1305 Titre : A model for the 3D kinematic interaction analysis of pile groups in layered soils Type de document : texte imprimé Auteurs : Dezi Francesca, Auteur ; Sandro Carbonari, Auteur ; Leoni Graziano, Auteur Article en page(s) : pp. 1281-1305 Langues : Anglais (eng) Mots-clés : Dynamics  Frequency domain  Kinematic interaction  Impedances  Numerical modelling  Pile groups  Soil-structure Index. décimale : 624.1 Infrastructures.Ouvrages en terre. Fondations. Tunnels Résumé : The paper presents a numerical model for the analysis of the soil-structure kinematic interaction of single piles and pile groups embedded in layered soil deposits during seismic actions. A finite element model is considered for the pile group and the soil is assumed to be a Winkler-type medium. The pile-soil-pile interaction and the radiation problem are accounted for by means of elastodynamic Green's functions. Condensation of the problem permits a consistent and straightforward derivation of both the impedance functions and the foundation input motion, which are necessary to perform the inertial soil-structure interaction analyses. The model proposed allows calculating the internal forces induced by soil-pile and pile-to-pile interactions. Comparisons with data available in literature are made to study the convergence and validate the model. An application to a realistic pile foundation is given to demonstrate the potential of the model to catch the dynamic behaviour of the soil-foundation system and the stress resultants in each pile. ISSN : 0098-8847 En ligne : www.interscience.wiley.com/journal/eqe [article] A model for the 3D kinematic interaction analysis of pile groups in layered soils [texte imprimé] / Dezi Francesca, Auteur ; Sandro Carbonari, Auteur ; Leoni Graziano, Auteur . - pp. 1281-1305. Langues : Anglais (eng) in Earthquake engineering structural dynamics > Vol. 38 N° 11 (Septembre 2009) . - pp. 1281-1305 Mots-clés : Dynamics  Frequency domain  Kinematic interaction  Impedances  Numerical modelling  Pile groups  Soil-structure Index. décimale : 624.1 Infrastructures.Ouvrages en terre. Fondations. Tunnels Résumé : The paper presents a numerical model for the analysis of the soil-structure kinematic interaction of single piles and pile groups embedded in layered soil deposits during seismic actions. A finite element model is considered for the pile group and the soil is assumed to be a Winkler-type medium. The pile-soil-pile interaction and the radiation problem are accounted for by means of elastodynamic Green's functions. Condensation of the problem permits a consistent and straightforward derivation of both the impedance functions and the foundation input motion, which are necessary to perform the inertial soil-structure interaction analyses. The model proposed allows calculating the internal forces induced by soil-pile and pile-to-pile interactions. Comparisons with data available in literature are made to study the convergence and validate the model. An application to a realistic pile foundation is given to demonstrate the potential of the model to catch the dynamic behaviour of the soil-foundation system and the stress resultants in each pile. ISSN : 0098-8847 En ligne : www.interscience.wiley.com/journal/eqe

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