Rigid Blocks Failure Mechanism for Stability of Shallow Tunnel Using Upper Bound Solution

A rigid block failure mechanism of shallow rectangular tunnel is proposed to calculate the needed support pressure for tunnel stability using upper bound solution. The velocity discontinuities in the side wall of the shallow rectangular tunnel of the failure mechanism occur in both radial and tangent directions. Formulas for calculating support pressure using upper bound solution are deduced based on the presented failure mechanism, and the calculation program is compiled. It is shown that the proposed rigid block failure mechanism can be used effectively to analyze the stability problems of shallow rectangular tunnel using upper bound solution.

Language

  • English

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 249-255
  • Monograph Title: Recent Advancement in Soil Behavior, In Situ Test Methods, Pile Foundations and Tunneling: Selected Papers From the 2009 GeoHunan International Conference

Subject/Index Terms

Filing Info

  • Accession Number: 01140982
  • Record Type: Publication
  • ISBN: 9780784410448
  • Files: TRIS
  • Created Date: Sep 23 2009 1:15PM