Application of a Multilaminate Model to simulation of shear band formation in NATM-tunnelling

A constitutive model formulated within the framework of Multilaminate Models is applied to analyse the practical problem of a tunnel construction according to the principles of the NATM (New Austrian Tunnelling Method). It is demonstrated that the development of plastic shear strains leading to a fa...

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Bibliographic Details
Published in:Computers and geotechnics 2002-01, Vol.29 (7), p.501-524
Main Authors: Schuller, H., Schweiger, H.F.
Format: Article
Language:English
Subjects:
Earth sciences
Earth, ocean, space
Engineering and environment geology. Geothermics
Engineering geology
Exact sciences and technology
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Summary:A constitutive model formulated within the framework of Multilaminate Models is applied to analyse the practical problem of a tunnel construction according to the principles of the NATM (New Austrian Tunnelling Method). It is demonstrated that the development of plastic shear strains leading to a failure mechanism that involves shear banding can be captured with this model. An enhanced strain softening formulation enables to model both, frictional and cohesive softening behaviour. Due to a simple regularisation technique mesh independent results are obtained with sufficient accuracy for practical purposes.
ISSN:0266-352X
1873-7633
DOI:10.1016/S0266-352X(02)00013-7