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AssigneeHochtief Aktiengesellschaft Vorm. Gebr. Helfmann
InventorsVolker Hentschel, Clemens Versteegen, Jens Gloyer, Siegmund Babendererde
Estimating the term…
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.
In a form of a concrete tunnel lining with a traveling shield, said form comprising an inner tunnel-lining sheathing and a form front, said inner tunnel-lining sheathing being divided into a plurality of independently movable sheathing segments with a plurality of intervening segment-bridging yieldable joints and said form front positioned between said inner tunnel-lining sheathing and said traveling shield being movable forward by said concrete which is forcible into an annular space formed by said traveling shield and/or the surrounding earth and by said form front, the improvement wherein said inner tunnel-lining sheathing is constructed and arranged with means for forward motion of at least one of said sheathing segments or at least two of said sheathing segments singly or in groups one after the other relative to remaining sheathing segments at rest, and wherein said means for forward motion includes that said sheathing segments are each supported by at least one separate sliding longitudinal guide with a hydraulic or pneumatic jack held in a supporting frame to support each of said sheathing segments and allow said segments to be movable with the help of a feed piston-cylinder device in the tunneling direction said form front is supported by at least one adjustable spring device on a cantilevered arm of said supporting frame.
A form for a concrete tunnel lining usable behind a tunnel excavator with a traveling shield comprising:
Dependencies are inferred from the claim text.