Structure for absorbing impact energy

Abstract

The structure for absorbing impact energy comprises a core having a first surface exposed to impacts, and reinforcements which are distributed inside the core and have frictional interfaces with the core material. The reinforcements comprise first reinforcements that are positioned in a first reinforced region adjacent to the first surface and have main directions of resistance forming an angle of less than 45° with the first surface.

1 . A structure for absorbing impact energy, comprising:
 an embankment having a first face exposed to impacts; and   reinforcements distributed within the embankment and having frictional interfaces with the material of the embankment,   wherein the reinforcements comprise first reinforcements placed in a first reinforced region adjacent to the first face and having main strength directions forming an angle of less than 45° with the first face.   
     
     
         2 . The structure as claimed in  claim 1 , wherein the main strength directions of the first reinforcements are parallel to the first face of the embankment. 
     
     
         3 . The structure as claimed in  claim 1 , wherein the embankment has a second face opposite the first face, and wherein the reinforcements comprise second reinforcements placed in a second reinforced region adjacent to the second face and having main strength directions forming an angle of less than 45° with the second face. 
     
     
         4 . The structure as claimed in  claim 3 , wherein the main strength directions of the second reinforcements are parallel to the second face of the embankment. 
     
     
         5 . The structure as claimed in  claim 1 , wherein the reinforcements are disposed horizontally. 
     
     
         6 . The structure as claimed in  claim 1 , wherein the first face of the embankment is covered with a facing. 
     
     
         7 . The structure as claimed in also having secondary reinforcements disposed transversely to the first face. 
     
     
         8 . The structure as claimed in  claim 1 , wherein the first reinforcements comprise metallic reinforcements. 
     
     
         9 . The structure as claimed in  claim 1 , wherein the first reinforcements comprise reinforcements made of polymer material. 
     
     
         10 . The structure as claimed in  claim 1 , wherein the reinforcements comprise reinforcements of the geogrid or geotextile type. 
     
     
         11 . The structure as claimed in  claim 1 , wherein at least some of the first reinforcements are arranged in successive segments along their main strength direction, with zones of mutual overlap between the segments. 
     
     
         12 . The structure as claimed in  claim 11 , wherein embankment material is between the successive segments of a first reinforcement, in the overlap zones.