Form for concrete-placement tunnel lining

Details Form for concrete-placement tunnel lining Form for concrete-placement tunnel lining

1988-06-30

1989-08-15

Reese, Randolph A.

Hydraulic and earth engineering

Underground passageway, e.g., tunnel

Boring

405141, 405146, 405150, E21D 1110, E21D 906

Patent

active

048569364

ABSTRACT:
A form for a concrete tunnel lining usable behind a tunnel excavator with a traveling shield is made of an inner tunnel-lining sheathing and a form front. The inner tunnel-lining sheathing is divided into a plurality of sheathing segments or rings movable independently of each other with intervening segment-bridging yieldable joints. The form front located between the traveling shield and the inner tunnel-lining sheathing is movable forwardly by the conrete which presses in the annular space formed by the traveling shield and/or the surrounding earth and by the inner tunnel-lining sheathing as well as the form front. An operationally beneficial design results when the inner tunnel-lining sheathing is set up for forward motion of the sheathing segments in the tunnel longitudinal direction singly or in groups one after the other relative to the remaining sheathing segments held or remaining at rest. The front can be supported additionally by at least one spring device held on cantilevered arms extending from the inner tunnel-lining form.

REFERENCES:
patent: 3877855 (1975-04-01), Hanson
patent: 4099388 (1978-07-01), Husemann et al.
patent: 4147453 (1979-04-01), Unger et al.
patent: 4437788 (1984-03-01), Walbrohl
patent: 4621947 (1986-11-01), Babeudererde et al.
patent: 4710058 (1987-12-01), Han
patent: 4768898 (1988-09-01), Babendererde et al.

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