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Analyses of Natm-Tunnels with 2-D And 3-D Finite Element Method

  • C. Vogt
  • P. Bonnier
  • P. A. Vermeer
Part of the International Centre for Mechanical Sciences book series (CISM, volume 397)

Abstract

To model the NATM shotcrete method of tunnelling we apply both 2D and 3D discretisations. The more or less traditional 2D approach is computationally simple, but it requires certain assumptions about the so-called beta-factor to be made. Therefore we also perform 3D FEM analysis for comparison.

Attention is focused on a tunnel in sedimentary clay rock. This rock is heavily overconso-lidated and as a consequence it involves high horizontal stresses. The impact of high K0values on tunnel contraction and surface displacements is shown to be significant.

Keywords

Surface Settlement Load Reduction Tunnel Face Tunnel Lining Section Length 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. HAUCK, C.-D. (1997): Die Ostumfahrung von Stuttgart-Vaihingen, 1. Kolloq. “Bauen in Boden und Fels” der TAE, OstfildernGoogle Scholar
  2. LANDESHAUPTSTADT STUTTGART (1996): Amtsblatt-Sonderdruck “Ostumfahrung Vaihingen”Google Scholar
  3. MAIDL, B. (1988): Handbuch des Tunnel- und Stollenbaus, Glückaufverlag, Essen.Google Scholar
  4. VERMEER, P. A., BRINKGREVE, R.B. J. (1995): PLAXIS — Finite Element Code for Soil and Rock Analyses. A.A. Balkema/Rotterdam/BrockfieldGoogle Scholar
  5. WITTKE, W. /Beratende Ingenieure für Grundbau und Felsbau GmbH (1996): Geotechni-scher Bericht zum Erkundungsprogramm des Österfeldtunnels (in extracts)Google Scholar

Copyright information

© Springer-Verlag Wien 1998

Authors and Affiliations

  • C. Vogt
    • 1
  • P. Bonnier
    • 2
  • P. A. Vermeer
    • 1
  1. 1.Stuttgart UniversityStuttgartGermany
  2. 2.Plaxis BVRhoonThe Netherlands

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