Dynamic behaviour of saturated poroelastic layers with embedded wall submited to seismic actions
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Cita com:
hdl:2117/327377
Tipus de documentText en actes de congrés
Data publicació2011
EditorCIMNE
Condicions d'accésAccés obert
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Abstract
Behaviour of poroelastic saturated materials submitted to dynamic actions is
strongly dependent of the solid skeleton permeability and the frequency of the movement.
Depending on these quantities, undrained behaviour or fully drained behaviour occurs for
total coupled interaction or for null interaction, respectively. Between these limit cases, some
relative movement occurs among solid skeleton and fluid, generating viscous damping,
which, in turn, modifies the elastic response of the system. This paper presents results of
coupled behaviour in poroelastic saturated layers with an embedded impermeable wall,
submitted to seismic actions. A Finite Element code developed at the University of Coimbra
(FEMEPDYN), with coupled formulation us−uw−p, was used for this purpose. Dynamic
responses of poroelastic layers with an embedded wall are compared with non-porous
materials for similar conditions. Damping of non-porous materials was previously calculated
by calibration of the Rayleigh coefficients in order to match the free field responses for both
materials types. Unlike for the free field analysis, results reveal some differences between
both materials responses with the presence of the wall, due to the volumetric deformations
imposed by the embedded wall. Also, those volumetric deformations have a more uniform
distribution in poroelastic layers with permeabilities that represent near total and near fully
drained behaviour.
CitacióGrazina, J.C.; Pinto, P.L. Dynamic behaviour of saturated poroelastic layers with embedded wall submited to seismic actions. A: COUPLED IV. "COUPLED IV : proceedings of the IV International Conference on Computational Methods for Coupled Problems in Science and Engineering". CIMNE, 2011, p. 608-709. ISBN 978-84-89925-78-6.
ISBN978-84-89925-78-6
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Coupled-2011-61_Dynamic behaviour of saturated.pdf | 1,815Mb | Visualitza/Obre |