STRESS AND STRAIN DEPENDENT STIFFNESS IN A NUMERICAL MODEL OF A TUNNEL
In the current road tunneling project in the centre of Prague, Czech Republic, several tectonic faults were encountered. The joints are filled by fragments of shales in a silty to clayey matrix. In the laboratory, the behaviour of the material was studied using mixtures of sand or crushed rock with fines at different mixing ratios. Further laboratory tests were carried out with the material from the joints, both on reconstituted and undisturbed triaxial specimens. The laboratory data are used in the numerical simulation of deformations of the rock massif during the tunnel construction. A comparison of several constitutive models for the fault material is presented, from a linear-elastic perfectly-plastic model to a stress and strain dependent stiffness model, and advantages of the stress and strain dependent model are demonstrated.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/isbn/3000091696
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Corporate Authors:
Swiss Federal Institute of Technology Zurich
Institute for Geotechnical Engineering
Zurich, Switzerland 8093 -
Authors:
- Bohac, J
- Herle, I
- Masin, D
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Conference:
- Planning and Engineering for the Cities of Tomorrow. Second International Conference on Soil Structure Interaction in Urban Civil Engineering
- Location: Zurich, Switzerland
- Date: 2002-3-7 to 2002-3-8
- Publication Date: 2002
Language
- English
Media Info
- Features: Figures; References; Tables;
- Pagination: p. 357-364
Subject/Index Terms
- TRT Terms: Clay; Deformation; Faults; Laboratory tests; Mathematical models; Shale; Silts; Simulation; Specimens; Stiffness; Strain (Mechanics); Stresses; Tunneling
- Uncontrolled Terms: Rock mass
- Geographic Terms: Prague (Czech Republic)
- Subject Areas: Bridges and other structures; Construction; Geotechnology; Highways;
Filing Info
- Accession Number: 00930497
- Record Type: Publication
- ISBN: 3000091696
- Files: TRIS
- Created Date: Sep 6 2002 12:00AM