Wedge member for assembling tunnel shield voussoirs

Details Wedge member for assembling tunnel shield voussoirs Wedge member for assembling tunnel shield voussoirs

1984-05-25

1986-06-10

Taylor, Dennis L.

Hydraulic and earth engineering

Underground passageway, e.g., tunnel

Lining

52 81, 52584, 405151, 4034081, E21D 1122

Patent

active

045940266

ABSTRACT:
Two adjoining voussoirs 1, 2 in a tunnel shield are assembled by sandwiching a wedge 12 between their adjacent sides 7, 8. The wedge extends over the entire length and width of the voussoir sides, and has concave surfaces 12a of equal curvature radius to the convex surfaces of the voussoir sides. The angle .alpha. between the adjacent outer surfaces of the voussoirs may be adjusted by varying the radial disposition of the wedge before tightening the assembly. The full mating contact between the voussoir sides and the wedge evenly distributes the applied stress.

REFERENCES:
patent: 1043034 (1912-10-01), Schlachter
patent: 1307973 (1919-06-01), Hester
patent: 2869182 (1959-01-01), White
patent: 3006670 (1961-10-01), Schmidt
patent: 4318637 (1982-03-01), Oger et al.
patent: 4441592 (1984-04-01), Everett

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