CURVED BEAM ANALOG FOR TUNNEL DESIGN IN MASSIVE ROCK

A curved-beam analog is shown to be valid for tunnel design in massive rock. A "mechanics of materials" analysis is used that retains a physical model of the dominant stress action by assuming an experimentally verifiable deformation, thus radically simplifying the mathematics, and providing a continued insight as complexity is added to the fundamental problem. The specific technique, curves-beam analysis isolates some of the material immediately surrounding the opening in the mass, and bordering on the uniform stress field, as a uniformly loaded ring, for which there is precedent. Qualitative and quantitative studies give an orientation into the mechanisms involved, particularly the deformation-controlled loading along the outer boundary of the ring, which was most simply handled by postulating a "degenerate" beam action. /ASLE/

• Corporate Authors:

  American Society of Civil Engineers

  345 East 47th Street
  New York, NY  United States  10017-2398
• Authors:
  • Adler, L
• Publication Date: 1966-11

Media Info

• Features: Appendices; Figures;
• Pagination: p. 189-209
• Serial:
  • Journal of Soil Mechanics & Foundations Div
  • Volume: 92
  • Issue Number: SM6

Subject/Index Terms

• TRT Terms: Analog computers; Curved beams; Deformation; Loads; Qualitative analysis; Quantitative analysis; Rock excavation; Rock mechanics; Soil mechanics; Stresses; Structural design; Tunneling; Tunnels
• Uncontrolled Terms: Loading; Tunnel design
• Old TRIS Terms: Analog systems
• Subject Areas: Bridges and other structures; Geotechnology; Highways;

Filing Info

• Accession Number: 00095463
• Record Type: Publication
• Report/Paper Numbers: ASCE #4989 Proceeding
• Files: TRIS
• Created Date: May 29 1975 12:00AM