SEISMIC INSTRUMENTATION OF TRANSPORTATION TUNNELS IN CALIFORNIA

The work reported herein was initiated during the spring of 1977, as a limited task in the more comprehensive program on the response of tunnels to earthquakes. The objective has been to provide guidance for an early installment of relatively simple instrumentation in a few selected tunnels in California. The report is composed of three parts. The first part describes suggested instrumentation programs at four different levels of sophistication. For the immediate and initial program at hand, it is foreseen that the first two levels of instrumentation will be employed. The more sophisticated programs have, however, been included to give an appropriate reference frame for the instruments to actually be installed, and also to provide some guidance for possible future installations. The second part lists the criteria that has been used in selecting tunnel sites. The final part contains a description of the tunnels chosen, including a discussion on the geological environment and the tunnel support systems.

• Corporate Authors:

  Brekke (Tor L)

  1847 Yosemite Road
  Berkeley, CA  United States  94707

  Federal Highway Administration

  Office of Research, 1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Brekke, T L
  • Korbin, G E
• Publication Date: 1977-8

Media Info

• Pagination: 28 p.

Subject/Index Terms

• TRT Terms: Dislocation (Geology); Dynamic loads; Earth movements (Geophysics); Earthquakes; Environment; Fences; Geological events; Geology; Instrumentation; Measuring instruments; Seismicity; Sensors; Soil profiles; Surveys; Tunnels; Vehicular tunnels
• Uncontrolled Terms: Dynamic response; Earth movements; Seismic response
• Geographic Terms: California
• Old TRIS Terms: Geological conditions; Seismic surveys
• Subject Areas: Bridges and other structures; Geotechnology; Highways;

Filing Info

• Accession Number: 00169746
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: FHWA/RD-77-138 Final Rpt.
• Files: NTIS, TRIS, USDOT
• Created Date: Mar 14 1978 12:00AM