SETTLEMENTS OF IMMERSED TUNNELS

Most immersed tunnels are placed in underwater trenches and add little net load to the foundation soils. Reloading settlements, compression of foundation courses and construction activities can nonetheless result in appreciable settlements of tunnel elements which can threaten tunnel alignments; joints between individual elements, or the structural integrity of the tunnel elements. This paper describes the design and construction of the Second Hampton Roads Tunnel. It provides assessment of tunnel displacements and describes the settlement performance of the tunnel. For example, settlement data from the First Hampton Roads Tunnel correlate well with those from the second tunnel. Rational methods for forecasting total and differential tunnel settlements are shown to produce reasonably reliable results when construction factors are fairly considered. (ASCE)

  • Availability:
  • Supplemental Notes:
    • Presented at the October 16-20, 1978, ASCE Convention & Exposition and Continuing Education Program, held at Chicago, Illinois.
  • Corporate Authors:

    American Society of Civil Engineers

    345 East 47th Street
    New York, NY  USA  10017-2398
  • Authors:
    • SCHMIDT, B
    • GRANTZ, W C
  • Publication Date: 1979-9

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00302210
  • Record Type: Publication
  • Report/Paper Numbers: ASCE 14811 Proceeding
  • Files: TRIS
  • Created Date: Jan 30 1980 12:00AM