BART'S TRANSBAY TUBE RETROFIT

This article gives an overview of a seismic retrofit project designed for the BART Transbay Tube in San Francisco. Work on the 3.6 mile steel-hulled, reinforced concrete-lined tube will be conducted in three phases involving the above-ground work at the east end of the tube where it connects with the Oakland vent structure, the underwater segment, and the San Francisco vent structure located at the west connection. A demonstration project will test different methods of vibrocompaction designed to make the backfill around and beneath the tube more dense and thus improve resistance to liquefaction. Funds for a system wide retrofit for BART will come from a voter-approved property tax increase.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/0041414X
• Supplemental Notes:
  • Special issue : Tunnels & Tunneling North America Vol. 17, June 2005
• Corporate Authors:

  Polygon Media Limited

  Tubs Hill House, London Road
  Sevenoaks, Kent TN13 1BY,   United Kingdom 
• Publication Date: 2005-6

Language

• English

Media Info

• Pagination: p38
• Serial:
  • Tunnels & Tunnelling International
  • Volume: 37
  • Issue Number: 6
  • Publisher: Progressive Media Markets, Ltd
  • ISSN: 0041-414X

Subject/Index Terms

• TRT Terms: Earthquake resistant design; Liquefaction; Underwater tunnels; Vibratory compaction
• Identifier Terms: San Francisco Bay Area Rapid Transit District; Transbay Tube
• Subject Areas: Bridges and other structures; Design; CONSTRUCTION: CONSTRUCTION & TUNNELING TECHNOLOGY;

Filing Info

• Accession Number: 01005320
• Record Type: Publication
• Source Agency: UC Berkeley Transportation Library
• Files: BTRIS, TRIS
• Created Date: Oct 14 2005 8:27AM