Movable formwork system for cladding part of a tunnel

Abstract

A movable formwork system for lining part of a tunnel includes a guide rail, a fastening component for fastening the guide rail to a surface of the tunnel to be lined, a formwork panel coupled to the guide rail, a rolling component sliding on a surface of the guide rail and attached to the formwork panel, and an anchoring structure having one part attached to the formwork panel and another part projecting from the formwork panel and is configured to be fastened to a surface of the tunnel to be lined. The formwork panel along with 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 lined. The system is applicable for building mined soft-ground tunnels, for example, where the so-called Belgian tunneling method is recommended.

1 . A movable formwork system for lining part of a tunnel, the movable formwork system comprising:
 a longitudinally elongated guide rail,   fastening means configured for fastening the guide rail to a surface of the tunnel to be lined,   a formwork panel coupled to the guide rail,   rolling means configured for sliding on a surface of the guide rail and attached to the formwork panel,   an anchoring structure having one part attached to the formwork panel and another part projecting from the formwork panel and is configured to be fastened to a surface of the tunnel to be lined, and wherein   the formwork system is configured such that the formwork panel along with the anchoring structure configured to move together guided by the guide rail when the anchoring structure is not fastened to a surface of the tunnel to be lined.   
     
     
         2 . The movable formwork system for lining part of a tunnel according to  claim 1 , wherein the formwork panel is located at a lower level with respect to the guide rail. 
     
     
         3 . The movable formwork system for lining part of a tunnel according to  claim 1 , wherein the formwork panel is located at an upper level with respect to the guide rail. 
     
     
         4 . The movable formwork system for lining part of a tunnel according to  claim 1 , wherein the guide rail is located on one side of the formwork panel. 
     
     
         5 . The movable formwork system for lining part of a tunnel according to  claim 1 , wherein the guide rail is movable with respect to the formwork panel when the anchoring structure is fastened to an outer surface. 
     
     
         6 . The movable formwork system for lining part of a tunnel according to  claim 1 , wherein the guide rail is straight. 
     
     
         7 . The movable formwork system for lining part of a tunnel according to  claim 1 , wherein the formwork panel has a flat surface for the formation of a concrete lining, and in that the anchoring structure has one or more surfaces coplanar with the flat surface of the panel. 
     
     
         8 . The movable formwork system for lining part of a tunnel according to  claim 1 , wherein the anchoring structure is formed by two or more beams arranged in the same longitudinal direction of the guide rail, and having one part attached to the formwork panel and another part projecting from the formwork panel. 
     
     
         9 . The movable formwork system for lining part of a tunnel according to  claim 1 , wherein the projecting part of the anchoring structure is located on one side of the formwork panel. 
     
     
         10 . The movable formwork system for lining part of a tunnel according to  claim 1 , wherein the rolling means comprise sheaves sliding on the rail. 
     
     
         11 . The movable formwork system for lining part of a tunnel according to  claim 2 , wherein the formwork panel is attached to the rolling means at the upper edge thereof. 
     
     
         12 . The movable formwork system for lining part of a tunnel according to  claim 8 , wherein the beams have holes in the projecting part thereof for the passage of fastening screws. 
     
     
         13 . The movable formwork system for lining part of a tunnel according to  claim 1 , wherein the fastening means for fastening the guide rail to a surface of the tunnel to be lined comprise a plurality of individual elements configured to be fastened to the guide rail in a removable manner. 
     
     
         14 . The movable formwork system for lining part of a tunnel according to  claim 1 , further comprising a skirting attached to the lower edge of the formwork panel and arranged in an inclined manner with respect to same. 
     
     
         15 . The movable formwork system for lining part of a tunnel according to  claim 1 , further comprising at least one vibrator device configured to be coupled to the formwork panel to cause the vibration and compaction of concrete.