Form assembly for making covering wall of tunnel made by shield

Details Form assembly for making covering wall of tunnel made by shield Form assembly for making covering wall of tunnel made by shield

1988-07-29

1990-04-03

Reese, Randolph A.

Hydraulic and earth engineering

Underground passageway, e.g., tunnel

Boring

405150, 249 11, 264 33, 264 34, E21D 906, E21D 1110, E04B 118

Patent

active

049135872

ABSTRACT:
A form structure for making a primary concrete covering wall on the surface of the wall of a tunnel which extends behind a shield type tunnel excavator advanced, wherein a form structure for casting concrete to make the covering wall is assembled with a plurality of arcuate form assemblies respectively including form segments and timbering members for reinforcing the cast and set concrete. The form segments of each assembly are detachably coupled to the timbering members. The form structure is disassembled after the cast concrete is set by detaching the form segments of the respective assemblies from the timbering members to leave the members on the primary covering wall of the set concrete, whereby the primary covering wall can be held in stable state simultaneously with completion of the primary covering wall on the tunnel wall surface.

REFERENCES:
patent: 852891 (1907-05-01), Moir
patent: 2263352 (1941-11-01), Dow et al.
patent: 2419329 (1947-04-01), Wilson
patent: 2590683 (1952-03-01), Clapp
patent: 3561223 (1971-02-01), Tabor
patent: 4519730 (1985-05-01), Horimatsu
patent: 4557627 (1985-12-01), Schmid et al.
patent: 4591297 (1986-05-01), Horimatsu
patent: 4610572 (1986-09-01), Horimatsu
patent: 4621948 (1986-11-01), Hentschel

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