Abrégé

The present invention relates to a movable formwork system for cladding part of a tunnel. The system comprises: a guide rail, fastening means for fastening the guide rail to a surface of the tunnel to be clad, a formwork panel attached to the guide rail, rolling means that slide on a surface of the guide rail and joined to the formwork panel, an anchoring structure having one part joined to the formwork panel and another part projecting from the formwork panel and configured to be fastened to a surface of the tunnel to be clad. The formwork panel and the anchoring structure can move together guided by the guide rail when the anchoring structure is not fastened to a surface of the tunnel to be clad. This invention is applicable to tunnel construction in soft-ground mines, for example in those where the so-called Belgian tunnelling method is recommended.

Classes IPC  ?

• E04G 11/34 - Coffrages à transfert horizontal pour faire des murs ou sections de murs d'un seul bloc
• E21D 9/00 - Tunnels ou galeries, avec ou sans revêtementsProcédés ou appareils pour leur exécutionTracé des tunnels ou des galeries
• E04G 21/08 - Dispositifs pour vibrer le béton intérieurement

Abrégé

The invention refers to a formwork system (1) for lining a tunnel, comprising: a reconfigurable formwork structure (3); and a guiding structure (10) configured to be attached to, and detached from a fixed part of the tunnel. The formwork system (3) is configured such that: the guiding structure (10) is slidable in the longitudinal direction of the tunnel, supported by the formwork structure (3) in its deployed configuration and when the guiding structure is released; and the formwork structure (3) is slidable in the longitudinal direction of the tunnel, supported by the guiding structure (10) when the formwork structure (3) is in its folded configuration and the guiding structure is fixed. The invention also relates to a method for lining a tunnel, using the formwork system previously described. The invention reduces execution time, reduces construction cost and improves safety.

Classes IPC  ?

• E21D 11/10 - Revêtement avec des matériaux de construction avec du béton coulé en placeCoffrage ou autre équipement adapté à cet effet

Abrégé

The invention relates to a tool (1) for dismounting travellers (2) for concreting large arches (30) of viaducts (3), the travellers (2) being of the type used to concrete viaducts, the tool being characterised in that it comprises: a rolling train (5) for moving along the deck (31) of the viaduct (3) to move the traveller (2) to an end of the arch (30) as it is being taken down; a crossbar (6) mounted on the rolling train (5) perpendicular to the deck (31) and having a length greater than the width of the deck (31) so as to project over both sides thereof; suspension bridges (7) having lateral slings (8), disposed on both sides of the crossbeam (6) and on both sides of the deck (31), outside of same; and the slings (8), which are attached to the suspension bridges (7).

Classes IPC  ?

• E01D 21/00 - Procédés ou appareils spécialement adaptés pour ériger ou assembler des ponts
• B66C 19/00 - Ponts roulants ou portiques fixes ou mobiles, portant un chariot ou un treuil mobile