PRELIMINARY DESIGN FOR NATM TUNNEL SUPPORT IN SOIL

A finite element is used in a parametric study of the excavation and support of a shallow tunnel using the NATM (New Austrian Tunnelling Method). The results are then cast in a form so that the moments and thrusts in a proposed liner can be easily obtained. The method only addresses the initial liner system. Using the same approach, a theoretical estimate can be obtained for the maximum settlement generated at ground surface. The method described is expected to assist in trade-off analyses and provide information to help guide better use of the more sophisticated analyses. The study considers the problem of NATM tunnels constructed in undrained clays. Details of the study are described, and the results are discussed.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/07339410
• Corporate Authors:

  American Society of Civil Engineers

  345 East 47th Street
  New York, NY  United States  10017-2398
• Authors:
  • LECA, E
  • Clough, G W
• Publication Date: 1992-4

Media Info

• Features: Appendices; Figures; References;
• Pagination: p. 558-575
• Serial:
  • Journal of Geotechnical Engineering
  • Volume: 118
  • Issue Number: 4
  • Publisher: American Society of Civil Engineers
  • ISSN: 0733-9410

Subject/Index Terms

• TRT Terms: Clay; Excavation and tunneling; Saturated soils; Structural design; Tunnel lining; Tunnel supports; Tunneling; Tunnels
• Identifier Terms: New Austrian Tunneling Method
• Uncontrolled Terms: Tunnel design; Undrained conditions
• Subject Areas: Bridges and other structures; Geotechnology; Highways; I42: Soil Mechanics;

Filing Info

• Accession Number: 00621090
• Record Type: Publication
• Files: TRIS
• Created Date: Apr 30 1992 12:00AM