Railway track construction method

Abstract

A method for constructing a railway track (VI) on a bed ( 5 ), includes: removing at least one rail (R 12 ) in front of a train used to store and lay rails, in the axis of the train, using removal elements secured to the train, the train being stopped on a first, already constructed, portion of the track under construction; and moving the at least one rail at least indirectly onto cross-members of the track under construction, so as to construct a second portion of the track as an extension of the first portion. A method for constructing a first and second railway track on a bed, and a method in which a first track portion and then a second track portion are alternately constructed with the same train used to store and lay rails while moving forward along an already constructed portion of a first track, are also described.

1 . A method for building a railway track (V 1 ) on a platform ( 5 ),
 characterized in that it includes the following steps:   removing at least one rail (R 12 ) in the axis of a rail storage and placement train ( 50 ) and in front of it, said train ( 50 ) being stopped on the first already-built portion of said track under construction (V 1 ), using removal means secured to said train,   longitudinally moving at least one rail (R 12 ) at least indirectly on the crossbeams of said track under construction, so as to build a second portion of said track in the extension of the first portion.   
     
     
         2 . The method according to  claim 1 , characterized in that said crossbeams may have been previously deposited on the platform ( 5 ) in their substantially final location in said track under construction (V 1 ). 
     
     
         3 . The method according to  claim 1 , characterized in that the step consisting of moving said rail (R 12 ) on the crossbeams of the track under construction includes:
 guiding said rail by a front end.   
     
     
         4 . The method according to  claim 2 , characterized in that it includes the following steps:
 fastening rolling means on the crossbeams of the track under construction (V 1 ),   moving said rail (R 12 ) on said rolling means.   
     
     
         5 . The method according to  claim 4 , characterized in that it includes the subsequent step of:
 repositioning the rails (R 12 ) of the track under construction (V 1 ) at their final location on the crossbeams.   
     
     
         6 . A method for building a first (V 1 ) and second (V 2 ) railway track, said first track (V 1 ) being built using the method according to  claim 1 , Characterized in that the construction of the second track (V 2 ) includes the following step:
 placing, on a platform of said second track, at least one rail (R 32 , R 42 ) substantially parallel to the direction of said first track (V 1 ) so as to build a second track portion (V 2 ) parallel to the first track, said at least one rail (R 32 , R 42 ) being placed from a train for storing and placing rails ( 50 ) traveling on said first track (V 1 ).   
     
     
         7 . The method according to  claim 6 , characterized in that it includes the following steps:
 advancing the train for storing and placing rails ( 50 ) on said first track (V 1 ), and   placing, on the platform of the second track, at least one rail (R 32 , R 42 ) near the location provided for the second rail (V 2 ) by sliding said rail out of the rail storage and placement train ( 50 ) in a direction toward the rear of the train and slanted relative to the axis of the train ( 50 ).   
     
     
         8 . The method according to  claim 6 , characterized in that it includes a step consisting of:
 placing, on the platform, crossbeams in their substantially final location in said second track (V 2 ).   
     
     
         9 . The method according to  claim 8 , characterized in that the rails (R 32 , R 42 ) of the second track (V 2 ) are placed on either side of said crossbeams of the second track. 
     
     
         10 . The method according to  claim 6 , characterized in that the step of sliding said rail outside the rail storage and placement train ( 50 ) includes the following step:
 laterally guiding said rail to offset it toward the location provided for the second track (V 2 ).   
     
     
         11 . The method according to  claim 8 , characterized in that it includes the subsequent step consisting of:
 repositioning the rails (R 32 , R 42 ) in their final location on the crossbeams of the second track by using known vehicles and a known method.   
     
     
         12 . A method for building a first and second railway track,
 characterized in that a first track portion (V 1 ) then a second track portion (V 2 ) using the method according to  claim 6 , are alternatively built, using the same rail storage and placement train ( 50 ) that advances on the first track (V 1 ) under construction.   
     
     
         13 . A rail storage and placement train ( 50 ), characterized in that it includes means, at its front end, for removing at least one first rail (R 12 ) in the axis of and in front of said rail storage and placement train ( 50 ), so as to build a portion of a track (V 1 ). 
     
     
         14 . The rail storage and placement train ( 50 ) according to  claim 13 ,
 characterized in that the means for removing at least one first rail (R 12 ) include at least two pressure rollers suitable for pressing said first rail between two opposite faces and driving it by rotating said rollers.   
     
     
         15 . The rail storage and placement train according to  claim 13 ,
 characterized in that it is also extended, at its front end, by a support ( 54 ) for said first rail including an inclined plane ( 55 ), so as to guide said first rail (R 12 ) from the storage cars toward the upper face of the crossbeams on which it is placed.   
     
     
         16 . The rail storage and placement train according to  claim 13 ,
 characterized in that it also includes, at its rear end, means for transversely guiding least one second rail (R 32 , R 42 ) removed from said rail storage cars ( 51 ), so as to guide said second rail toward the location planned for a second track (V 2 ).   
     
     
         17 . The rail storage and placement train ( 50 ) according to  claim 16 ,
 characterized in that the transverse guide means may include at least one arm ( 56 ,  57 ) fixed to said rail storage and placement train ( 50 ) and laterally overhanging said train.   
     
     
         18 . The rail storage and placement train ( 50 ) according to  claim 17 ,
 characterized in that at least one arm ( 57 ) may include a leg equipped with tired wheels ( 58 ), so as to roll on the platform as the train advances.   
     
     
         19 . The method according to  claim 2 , characterized in that the step consisting of moving said rail (R 12 ) on the crossbeams of the track under construction includes:
 guiding said rail by a front end.   
     
     
         20 . The method according to  claim 3 , characterized in that it includes the following steps:
 fastening rolling means on the crossbeams of the track under construction (V 1 ),   moving said rail (R 12 ) on said rolling means.