Hydraulic and earth engineering – Underground passageway – e.g. – tunnel – Lining
Patent
1983-08-04
1985-12-17
Husar, Cornelius J.
Hydraulic and earth engineering
Underground passageway, e.g., tunnel
Lining
52583, 403 13, 403293, E21D 1100, E04C 110, F16B 700
Patent
active
045589704
ABSTRACT:
Arcuate concrete segments of a tunnel wall are joined together in the circumferential direction by an internally threaded fitting embedded in the end of one segment and a bolt extending through an opening in the end of a peripherally adjacent segment and interengaged with the fitting. Longitudinally adjacent segments are interconnected by bolt openings extending longitudinally through the segments and opening into corresponding enlarged conical recesses at the interface between the segments, a conically tapered positioning ring engaging the recesses, and threaded bolts extending through the longitudinally extending openings through the segments and having threaded ends interengaged with a common coupler member located in the corresponding recesses.
REFERENCES:
patent: 2239026 (1941-04-01), Wagner
patent: 2699182 (1955-01-01), Baldridge
patent: 3729219 (1973-04-01), Crane
patent: 3969906 (1976-07-01), McBean
patent: 4047388 (1977-09-01), Howlett
patent: 4068957 (1978-01-01), Brems et al.
patent: 4235573 (1980-11-01), Peter et al.
Husar Cornelius J.
Stodola Nancy J.
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