Tunnel linings

Details Tunnel linings Tunnel linings

1982-08-16

1985-05-07

Corbin, David H.

Hydraulic and earth engineering

Underground passageway, e.g., tunnel

Lining

52584, 405151, E21D 1108

Patent

active

045155011

ABSTRACT:
Arcuate concrete segments of a tunnel lining are joined together by means of a recess in a segment edge having a pair of abutment members projecting into the recess to define a constriction therein, the abutment members forming a pair of abutment surfaces facing inwardly of the constriction, and a screw-threaded headed bolt in an adjacent segment, the segments being positioned edge to edge with the bolt inserted in the recess and moved relatively to each other so that the bolt head engages the abutment surfaces. The recess is accessible from inside the lining to allow the bolt head to be tightened.

REFERENCES:
patent: 3928951 (1975-12-01), Murphy
patent: 4004391 (1977-01-01), Keeton
patent: 4104885 (1978-08-01), Thomas
patent: 4318636 (1982-03-01), Thomas

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