Influence of modelling soil anisotropy on the behaviour of deep excavations

H. F. Schweiger, B. Schädlich

Publikation: Beitrag in Buch/Bericht/KonferenzbandBeitrag in einem Konferenzband

Abstract

Constitutive models based on the multilaminate framework account naturally for stress induced anisotropy but inherent anisotropy needs additional considerations. A feature recently introduced, is the capability of the model to take into account anisotropic elasticity in the small strain range. Response envelopes are presented to demonstrate this effect. The implications of taking into account anisotropy of strength and small strain stiffness for the analysis of deep excavation problems employing a multilaminate framework is addressed in this paper by solving a relatively simple benchmark problem where the infl uence of different assumptions with respect to anisotropy is evaluated. It follows from these studies that, if displacements and thus strains remain at moderate levels (which is often the case for these types of problems in order to avoid damage to adjacent structures) the infl uence of shear strength anisotropy is less pronounced as compared to problems where relatively large strains occur. Although the general effect of considering small strain stiffness is apparent, anisotropy of small strain stiffness is of less importance.

Originalspracheenglisch
TitelComputer Methods for Geomechanics
UntertitelFrontiers and New Applications
ErscheinungsortSydney
Herausgeber (Verlag)Centre for Infrastructure Engineering and Safety
Seiten262-267
Seitenumfang6
Band1
ISBN (Print)978-0-9808244-1-4
PublikationsstatusVeröffentlicht - 2011
VeranstaltungInternational Association for Computer Methods and Advances in Geomechanics: IACMAG 2011 - Melbourne, Australien
Dauer: 9 Mai 201111 Mai 2011

Konferenz

KonferenzInternational Association for Computer Methods and Advances in Geomechanics
LandAustralien
OrtMelbourne
Zeitraum9/05/1111/05/11

ASJC Scopus subject areas

  • !!Computational Theory and Mathematics
  • !!Geochemistry and Petrology

Fields of Expertise

  • Sonstiges

Treatment code (Nähere Zuordnung)

  • Theoretical

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