Domain reduction method for single and two-phase dynamic soil-structure interaction problems
Author
Truty, Andrzej
Zimmermann, Thomas
Release date
2013
Place of publication
Rhodes, Greece, Swansea, UK
Publisher
International Centre for Computational Engineering (IC2E)
Published in
Computational Geomechanics : COMGEO III : proceedings of the 3rd International Symposium On Computational Geomechanics (COMGEO III), Krakow, Poland, 21-23 August, 2013 / edited by S. Pietruszczak; G. N. Pande
Pages
273-283
Language
English
ISBN
978-960-98750-2-8
Comments
Third International Symposium on Computational Geomechanics (ComGeo III) Radisson Blu Hotel, Krakow, Poland, 21-23 August, 2013
Wydawnictwo wyłącznie w formie elektronicznej
Keywords
dynamics, domain reduction method, two-phase consolidation, finite elements
Abstract
Transient dynamic soil-structure time history analyses for single or two-phase fully or partially saturated media require appropriate techniques for correct representation of boundary conditions and inclusion of the free field motion into the model. Size of the computational model is frequently a serious limitation in practical applications. One of the approaches that allows to reduce computational effort is the domain reduction method (DRM) formulated first by Bielak et.al. (Bielak, Loukakis, Hisada, & Youshimura 2003),(Youshimura, Bielak, Hisada, & Fernandez 2003), for single phase, later on extended to the two-phase fully saturated media by Kantoe et al. (Kantoe 2006). In this paper an implicit DRM method is proposed for two-phase fully or partially saturated media, extending the theory given by Aubry and Ozanam (Aubry & Ozanam 1988) (for static consolidation), using a stabilized (through pressure Laplacian) u-p formulation (Truty & Zimmermann 2006) worked out for low order 2D/3D BBAR and EAS elements. Numerical results for twin shallow tunnels subject to the Loma Prieta earthquake show robustness of the method.
