BEHAVIOUR OF SUBAQUEOUS TUNNELS DURING EARTHQUAKES

Three-dimensional models of a subaqueous tunnel were built on a shaking table and vibrated for the purpose of investigating the dynamic behaviour of the tunnel. The material of the soft surface layer was gelatin gel and that tunnel was silicon rubber. In addition, earthquake observations at the site of the real subaqueous tunnel have been carried out using accelerometers and strain gauges set on the walls of the tunnel. At the site, micro-tremors were also measured. In these studies, it was noted that non-uniform displacements of the ground along the tunnel axis were caused variations of the dynamic behaviour of the ground, and that the tunnel deforms correspondingly to the varying deformations of the ground. From these experimental results, a mathematical model of the subaqueous tunnel was formulated for anti-seismic design studies.

• Corporate Authors:

  Wiley (John) & Sons, Limited

  Baffins Lane
  Chichester, Sussex  England 
• Authors:
  • Okamuto, S
  • Tamura, C
• Publication Date: 1973

Media Info

• Pagination: p. 253-266
• Serial:
  • Earthquake Engineering and Structural Dynamics
  • Volume: 1
  • Publisher: Wiley (John) & Sons, Limited

Subject/Index Terms

• TRT Terms: Earthquakes; Rapid transit; Tunnels; Underwater tunnels
• Identifier Terms: San Francisco Bay Area Rapid Transit District
• Subject Areas: Bridges and other structures; Construction; Public Transportation;

Filing Info

• Accession Number: 00050666
• Record Type: Publication
• Files: TRIS
• Created Date: Feb 15 1981 12:00AM