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Structural behavior of precast concrete tunnel liners
Structural tests were conducted on precast concrete segmental tunnel liners considered for use in subway tunnels of San Francisco Bay Area Rapid Transit District; each tunnel ring consisted of seven segments which formed 30 in. of circular tunnel liner when bolted together; two liner rings were tested, with loads applied to outer surface of rings at 12 points; behavior of rings was good; at maximum load levels attainable, only small amount of cracking had occurred; acceptance criterion was that rings should deflect at least 1 in. without visible damage; both reached 2.5 in. deflection without appreciable damage.
Structural behavior of precast concrete tunnel liners
Structural tests were conducted on precast concrete segmental tunnel liners considered for use in subway tunnels of San Francisco Bay Area Rapid Transit District; each tunnel ring consisted of seven segments which formed 30 in. of circular tunnel liner when bolted together; two liner rings were tested, with loads applied to outer surface of rings at 12 points; behavior of rings was good; at maximum load levels attainable, only small amount of cracking had occurred; acceptance criterion was that rings should deflect at least 1 in. without visible damage; both reached 2.5 in. deflection without appreciable damage.
Structural behavior of precast concrete tunnel liners
Am Concrete Inst -- J
Gamble, W.L. (author)
1967
11 pages
Article (Journal)
English
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