BEHAVIOUR OF CONCRETE TUNNELS IN VISCOELASTIC TIME-DEPENDENT ROCKS. PROCEEDINGS OF THE SIXTH INTERNATIONAL CONFERENCE ON NUMERICAL METHODS IN GEOMECHANICS, 11-15 APRIL 1988, INNSBRUCK, AUSTRIA. VOLUMES 1 - 3

This paper presented an analytical method using two dimensional finite element analysis for studying the behaviour of a concrete tunnel which cracked after construction. In the analysis, the influence of different types of rock pressure on the tunnel lining was studied. The surrounding soft rock was considered as a viscoelastic time dependent material. The relation between the volumetric parts of the stress and strain tensor were assumed to be elastic while their deviatoric components of stress and strain tensor were related to the viscoelastic relation. The static load time dependent was obtained by the application of heaviside functions. The tunnel was considered as an elastic media. It was established that the loading case in terms of coefficient "k" (the ratio of horizontal rock pressure to vertical pressure) was the appropriate type of loading to describe the behaviour of the tunnel with time. (TRRL)

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    AA Balkema

    P.O. Box 1675
    Rotterdam,   Netherlands  BR-3000
  • Authors:
    • BUDKOWSKA, B B
    • Fu, Q
    • Ghavami, K
  • Publication Date: 1988

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  • Accession Number: 00492675
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • ISBN: 90-6191-809-X
  • Files: ITRD, TRIS
  • Created Date: Mar 31 1990 12:00AM