The report presents the results of a study on observational methods and their potential for improving tunnel design and construction. Advantages and limitations of these methods in particular regarding their application in the United States are examined and initial steps to improve the methods are presented. Specifically, the report gives a detailed description of the New Austrian Tunneling Method (NATM), the most advanced observational method. Following a review of contractual and legal issues in tunneling, an assessment is given of the technical, contractual, operational and economic aspects of observational methods that need to be improved. The first research results providing such improvements are presented. They include a concept for less conservative empirical design methods, a comprehensive review and critique of presently available analysis methods, a simplified analysis method for preliminary design and an extensive discussion of ground structure behavior. These results which are not only applicable to observational methods and the detailed review of the NATM can be used in practice.

  • Corporate Authors:

    Massachusetts Institute of Technology

    Department of Civil Engineering, 77 Massachusetts Avenue
    Cambridge, MA  United States  02139

    Department of Transportation

    Office of University Research, 1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Einstein, H H
    • Schwartz, C W
    • STEINER, W
    • Baligh, M M
    • Levitt, R E
  • Publication Date: 1980-5

Media Info

  • Pagination: 503 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00326067
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: DOT/RSPA/DPB-50-7910Final Rpt.
  • Contract Numbers: DOT-OS-60136
  • Files: NTIS, TRIS, USDOT
  • Created Date: Nov 19 1981 12:00AM