Deformed pile shaft for providing gripping contact with a supporting medium and resisting the supporting medium from shearing

Abstract

A pile includes a shaft; and a soil displacement head or a helical blade with a leading edge and a trailing edge, operatively connected to a first end of the shaft; the shaft having deformations formed thereon to provide a gripping interface between a supporting medium and the shaft.

What is claimed is: 
     
         1 . A pile, comprising:
 a shaft; and   a soil displacement head, operatively connected to a first end of said shaft, having a helical blade with a leading edge and a trailing edge;   said shaft having continuous deformations formed thereon to provide a gripping interface between a supporting medium and said shaft.   
     
     
         2 . The pile, as claimed in  claim 1 , wherein said continuous deformations are a plurality of raised rings on a surface of said shaft. 
     
     
         3 . The pile, as claimed in  claim 1 , wherein said continuous deformations are a plurality of ringed channels on a surface of said shaft. 
     
     
         4 . The pile, as claimed in  claim 1 , wherein said plurality of raised rings is formed on an entire length of said shaft. 
     
     
         5 . The pile, as claimed in  claim 1 , wherein said plurality of ringed channels is formed on an entire length of said shaft. 
     
     
         6 . The pile, as claimed in  claim 1 , further comprising:
 a lateral compaction element, located within said helical blade to laterally compact a medium, as the pile is driven into the medium, to create an annulus in the medium.   
     
     
         7 . The pile, as claimed in  claim 6 , further comprising:
 a deformation structure disposed above said lateral compaction element to create a spiral deformation in an outer wall of the annulus.   
     
     
         8 . The pile, as claimed in  claim 2 , further comprising:
 a lateral compaction element, located within said helical blade to laterally compact a medium, as the pile is driven into the medium, to create an annulus in the medium.   
     
     
         9 . The pile, as claimed in  claim 8 , further comprising:
 a deformation structure disposed above said lateral compaction element to create a spiral deformation in an outer wall of the annulus.   
     
     
         10 . The pile, as claimed in  claim 3 , further comprising:
 a lateral compaction element, located within said helical blade to laterally compact a medium, as the pile is driven into the medium, to create an annulus in the medium.   
     
     
         11 . The pile, as claimed in  claim 10 , further comprising:
 a deformation structure disposed above said lateral compaction element to create a spiral deformation in an outer wall of the annulus.   
     
     
         12 . A pile, comprising:
 a shaft; and   a medium loosen bit to loosen a medium around the pile as the pile is driven therein;   said medium loosen bit including a lateral compaction structure to laterally compact the loosen medium to create an annulus;   said shaft having a continuous helical structure formed thereon to provide a gripping interface between a supporting medium and said shaft.   
     
     
         13 . A pile, comprising:
 a shaft; and   a helical blade, operatively connected to a first end of said shaft, having a leading edge and a trailing edge;   said shaft having a plurality of protrusions formed thereon to provide a gripping interface between a supporting medium and said shaft.   
     
     
         14 . The pile, as claimed in  claim 13 , wherein said shaft further includes a plurality of indentations projecting into said shaft. 
     
     
         15 . A pile, comprising:
 a shaft; and   a helical blade, operatively connected to a first end of said shaft, having a leading edge and a trailing edge;   said shaft having a plurality of indentations randomly formed thereon to provide a gripping interface between a supporting medium and said shaft.