| Titre : | A model for the 3D kinematic interaction analysis of pile groups in layered soils |
| Auteurs : | Dezi Francesca, Auteur ; Sandro Carbonari, Auteur ; Leoni Graziano, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Earthquake engineering structural dynamics (Vol. 38 N° 11, Septembre 2009) |
| Article en page(s) : | pp. 1281-1305 |
| Langues : | Anglais |
| Index. décimale : | 624.1 (Infrastructures.Ouvrages en terre. Fondations. Tunnels) |
| Tags : | Dynamics ; Frequency domain ; Kinematic interaction ; Impedances ; Numerical modelling ; Pile groups ; Soil-structure |
| 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 |
