Rail track tie

Abstract

The rail track tie including: a rigid block presenting a bottom face, and a top face for receiving at least one longitudinal rail; a cover for receiving the rigid block and in the form of a rigid shell including a bottom and a peripheral rim around the bottom; and a resilient soleplate disposed between the bottom face of the rigid block and the bottom of the cover. The resilient soleplate has dynamic stiffness k2 lying in the range of 6 kN/mm to 10 kN/mm, and preferably in the range of 6 kN/mm to 8 kN/mm.

1 - 10 . (canceled)  
   
   
       11 : A rail track tie comprising: 
 a rigid block presenting a bottom face and a top face for receiving at least one longitudinal rail;    a cover for receiving the rigid block and in the form of a rigid shell comprising a bottom and a peripheral rim around the bottom; and    a resilient soleplate disposed between the bottom face of the rigid block and the bottom of the cover,    wherein the resilient soleplate has a dynamic stiffness k2 lying in the range of 6 kN/mm to 10 kN/mm.    
   
   
       12 : The rail track tie as recited in  claim 11 , wherein the dynamic stiffness k2 has a range of 6 kN/mm to 8 kN/mm.  
   
   
       13 : The rail track tie as recited in  claim 11 , wherein the resilient soleplate has a substantially plane top face and a substantially plane bottom face.  
   
   
       14 : The rail track tie as recited in  claim 11 , wherein the block has four peripheral faces that connect the top face to the bottom face, and further including resilient pads disposed between each peripheral face of the block and the peripheral rim of the cover.  
   
   
       15 : The rail track tie as recited in  claim 14 , wherein the resilient pads comprise at least two longitudinal resilient pads of dynamic stiffness lying in the range of 20 kN/mm to 25 kN/mm, and at least two transverse resilient pads of dynamic stiffness lying in the range of 15 kN/mm to 18 kN/mm.  
   
   
       16 : The rail track tie as recited in  claim 11 , further comprising, on the top face of the rigid block, a resilient bearing element of dynamic stiffness lying in the range of 120 kN/mm to 300 kN/mm, the resilient bearing element being designed to receive the rail bearing thereagainst.  
   
   
       17 : The rail track tie as recited in  claim 16 , wherein the resilient bearing element has a dynamic stiffness in the range of 200 kN/mm to 300 kN/mm.  
   
   
       18 : The rail track tie as recited in  claim 11 , wherein the tie has only a single block and only a single cover.  
   
   
       19 : The rail track tie as recited in  claim 18 , wherein the block weighs in the range of 350 kg to 450 kg.  
   
   
       20 : The rail track tie as recited in  claim 19 , wherein the block weighs in the range of 400 kg to 450 kg.  
   
   
       21 : The rail track tie as recited in  claim 11 , wherein the tie comprises a second block, a second respective cover associated therewith, and a transverse spacer interconnecting the block and the second block.  
   
   
       22 : The rail track tie as recited in  claim 21 , wherein each block weighs in the range of 100 kg to 150 kg.  
   
   
       23 : The rail track tie as recited in  claim 22 , wherein each block weighs in the range of 130 kg to 150 kg.  
   
   
       24 : A rail track segment, comprising a rail track tie as recited in  claim 11 , and at least one rail bearing on the tie.