Numerical modelling of tunnel excavation in soils using the Multilaminate Model

H. Schuller*, H. F. Schweiger

*Korrespondierende/r Autor/-in für diese Arbeit

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

Abstract

Finite element analyses of a tunnel excavation with low overburden are presented utilizing a constitutive model embedded within the framework of the Multilaminate Model. It incorporates deviatoric hardening plasticity in the pre-peak range and a simple strain softening formulation for approximating the post-peak behaviour. Staged construction sequence of the tunnel is simulated by modelling excavation of top heading, bench and invert. It is demonstrated that the mechanism of strain localization and shear band formation which may lead to the collapse of the structure can be captured reasonably well and with sufficient accuracy for practical problems. Furthermore it is shown that displacements under working load conditions are qualitatively in good agreement with observations made in practice.

Originalspracheenglisch
TitelNumerical models in geomechanics. Proceedings of the 7th international symposium, Graz, September 1999.
Redakteure/-innenG. N. Pande, S. Pietruszczak, H. F. Schweiger, G.N. Pande, S. Pietruszczak, H.F. Schweiger
Seiten341-346
Seitenumfang6
PublikationsstatusVeröffentlicht - 1 Dez. 1999
Veranstaltung7th International Symposium on Numerical Models in Geomechanics - Graz, Österreich
Dauer: 1 Sep. 19993 Sep. 1999

Konferenz

Konferenz7th International Symposium on Numerical Models in Geomechanics
KurztitelNUMOG VII
Land/GebietÖsterreich
OrtGraz
Zeitraum1/09/993/09/99

ASJC Scopus subject areas

  • Erdkunde und Planetologie (insg.)
  • Umweltwissenschaften (insg.)

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