Construction work and method of production

Abstract

The construction work erected in front of a pre-existing wall comprises a facing standing along a front face of the work, a fill occupying a gap between the facing and the pre-existing wall, and a retention system extending into the fill for keeping the facing in place relative to the pre-existing wall. The retention system comprises first stabilizing elements attached to the pre-existing wall and extending into a first region of the fill, and second stabilizing elements connected to the facing and extending into a second region of the fill. The first and second regions have a common part in which forces are transmitted between the first and second stabilizing elements by the fill material.

1 . A construction work erected in front of a pre-existing wall, the work comprising a facing erected along a front face of the work, a fill occupying a gap between the facing and the pre-existing wall, and a retention system extending into the fill for keeping the facing in place relative to the pre-existing wall, wherein the retention system comprises first stabilizing elements attached to the pre-existing wall and extending into a first region of the fill, and second stabilizing elements connected to the facing and extending into a second region of the fill, said first and second regions having a common part in which forces are transmitted between the first and second stabilizing elements by the material of the fill.  
     
     
         2 . Construction work of  claim 1 , wherein the facing comprises prefabricated elements in which the second stabilizing elements are partly embedded.  
     
     
         3 . The construction work of  claim 2 , wherein the prefabricated elements are made of concrete and the second stabilizing elements comprise flexible synthetic reinforcements each having at least one part cast in the concrete of one of the prefabricated elements.  
     
     
         4 . The construction work of  claim 3 , wherein the cast part of the flexible synthetic reinforcement follows a loop in the prefabricated element so as to have two segments projecting into the second region of the fill.  
     
     
         5 . The construction work of  claim 4 , wherein the loop is placed in the prefabricated element so that the two projecting segments of the flexible synthetic reinforcement emerge from the facing into the fill at vertically spaced positions.  
     
     
         6 . The construction work of  claim 1 , wherein the second stabilizing elements comprise geotextile layers extending into the second region of the fill.  
     
     
         7 . The construction work of  claim 6 , comprising geotextile sheets folded so as each to have a front part extending over the front face of the work and forming a portion of the facing, and two layers folded back from said front part and extending approximately horizontally into the fill in order to form two of the second stabilizing elements.  
     
     
         8 . The construction work of  claim 1 , wherein the second stabilizing elements comprise metal reinforcements attached to the facing and extending into the second region of the fill.  
     
     
         9 . The construction work of  claim 1 , wherein there is substantially no direct contact between the first stabilizing elements and the second stabilizing elements.  
     
     
         10 . The construction work of  claim 1 , wherein the first stabilizing elements comprise flexible synthetic strips.  
     
     
         11 . The construction work of  claim 9 , wherein the flexible synthetic strips are placed along zigzag paths in the first region of the fill.  
     
     
         12 . The construction work of  claim 1 , wherein the second stabilizing elements comprise flexible synthetic strips.  
     
     
         13 . The construction work of  claim 1 , wherein the facing includes wire mesh.  
     
     
         14 . A method of constructing a work in front of a pre-existing wall, the method comprising the steps of: 
 erecting a facing along a front face of the work, delimiting a volume to be filled;    positioning a retention system in a gap between the facing and the wall for holding the facing in position relative to the wall;    providing fill material into said gap; and    compacting the fill material,    wherein the retention system comprises first stabilizing elements attached to the wall and extending into a first region of the fill, and second stabilizing elements connected to the facing and extending into a second region of the fill, said first and second regions having a common part so that, after fill material has been introduced and compacted, forces are transmitted between the first and second stabilizing elements by the fill material located in said common part.