Foundation structure of prestressed concrete tank

Abstract

A foundation structure of a prestressed concrete tank that is constructed on a hard supporting ground and that has a structure in which a base slab and a side wall are integrally formed, comprises a flexible layer that is provided on the supporting ground and that maintains flexibility even when the flexible layer receives the weight of the prestressed concrete tank. The prestressed concrete tank is constructed on the flexible layer.

1 . A foundation structure of a prestressed concrete tank that is constructed on a hard supporting ground and that has a structure in which a base slab and a side wall are integrally formed, said foundation structure comprising: 
 a flexible layer that is provided on said supporting ground and that maintains flexibility even when said flexible layer receives the weight of said prestressed concrete tank,    wherein said prestressed concrete tank is constructed on said flexible layer.    
   
   
       2 . A foundation structure of a prestressed concrete tank according to  claim 1 , wherein 
 said flexible layer is structured by laying bags on said supporting ground to cover said ground, each of said bags being filled with a powder substance.    
   
   
       3 . A foundation structure of a prestressed concrete tank according to  claim 2 , wherein 
 said powder substance is earth-and-sand.    
   
   
       4 . A foundation structure of a prestressed concrete tank according to  claim 2 , wherein 
 said bags are made of cloth.    
   
   
       5 . A foundation structure of a prestressed concrete tank according to  claim 3 , wherein 
 said bags are made of cloth.    
   
   
       6 . A foundation structure of a prestressed concrete tank according to  claim 1 , wherein: 
 oversite concrete is provided on said flexible layer; and    said base slab of said prestressed concrete tank is constructed on said oversite concrete.    
   
   
       7 . A foundation structure of a prestressed concrete tank according to  claim 2 , wherein: 
 oversite concrete is provided on said flexible layer; and    said base slab of said prestressed concrete tank is constructed on said oversite concrete.