Influence of modelling soil anisotropy on the behaviour of deep excavations

H. F. Schweiger, B. Schädlich

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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.

Original languageEnglish
Title of host publicationComputer Methods for Geomechanics
Subtitle of host publicationFrontiers and New Applications
Place of PublicationSydney
PublisherCentre for Infrastructure Engineering and Safety
Pages262-267
Number of pages6
Volume1
ISBN (Print)978-0-9808244-1-4
Publication statusPublished - 2011
Event13th International Conference of the International Association for Computer Methods and Advances in Geomechanics, IACMAG 2011 - Melbourne, VIC, Australia
Duration: 9 May 201111 May 2011

Conference

Conference13th International Conference of the International Association for Computer Methods and Advances in Geomechanics, IACMAG 2011
CountryAustralia
CityMelbourne, VIC
Period9/05/1111/05/11

ASJC Scopus subject areas

  • Computational Theory and Mathematics
  • Geochemistry and Petrology

Fields of Expertise

  • Sonstiges

Treatment code (Nähere Zuordnung)

  • Theoretical

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