CENTRIFUGE STUDY OF FAULTING EFFECTS ON TUNNEL

The results are presented of the centrifuge tests performed on an instrumented model tunnel: (a) supported over one half of its length by a rigid base (sandstone bedrock condition), with the other half embedded in loose sand, and subjected to simulated earthquake; and (b) subjected to a scaled fault displacement with the tunnel covered by a correctly scaled depth of dry soil. The finite element analysis is described, and the results of the calculations are presented. It was found that for the infinite, segmented, concrete prototype tunnel on which the centrifuge modeling and numerical analysis were based, even a 2-ft vertical fault displacement causes computed longitudinal tunnel stresses which would certainly fail the proposed tunnel. Greater stresses are developed by the expected maximum vertical fault displacement of 3.7 ft. Other study findings and their impact on design are discussed.

• Availability:
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• Corporate Authors:

  American Society of Civil Engineers

  345 East 47th Street
  New York, NY  United States  10017-2398
• Authors:
  • Burridge, P B
  • Scott, R F
  • Hall, J F
• Publication Date: 1989-7

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: p. 949-967
• Serial:
  • Journal of Geotechnical Engineering
  • Volume: 115
  • Issue Number: 7
  • Publisher: American Society of Civil Engineers
  • ISSN: 0733-9410

Subject/Index Terms

• TRT Terms: Centrifuges; Earthquakes; Faulting; Finite element method; Instrumentation; Sandstones; Structural analysis; Structural design; Tunnels
• Uncontrolled Terms: Tunnel design
• Subject Areas: Bridges and other structures; Geotechnology; Highways; I42: Soil Mechanics;

Filing Info

• Accession Number: 00486754
• Record Type: Publication
• Files: TRIS
• Created Date: Aug 31 1989 12:00AM