Foundation pile and installing method thereof

Abstract

A foundation pile includes a tubular wall, a top cap covering a top end of the tubular wall, a partition plate disposed transversely in the tubular wall below the top cap and dividing an inner space of the tubular wall into upper and lower spaces, two opposite fixing holes extending radially through the tubular wall and communicated with the upper space, and a plurality of pressure release holes extending radially through the tubular wall and communicated with the lower space. The partition plate prevents concrete slurry from flowing into the upper space. The pressure release holes allow the concrete to consolidate therein and to thereby increase transverse binding forces with the foundation pile. A method of installing the foundation pile is also disclosed.

1 . A foundation pile for a building construction, comprising:
 a tubular wall having top and bottom ends and defining an inner space;   a top cap covering said top end of said tubular wall;   a partition plate disposed transversely inside said tubular wall below said top cap and dividing said inner space into an upper space between said top cap and said partition plate, and a lower space below said partition plate and opening at said bottom end;   two opposite fixing holes extending radially through said tubular wall and communicated with said upper space; and   a plurality of pressure release holes extending radially through said tubular wall and communicated with said lower space.   
     
     
         2 . The foundation pile of  claim 1 , further comprising two blocking pieces removably plugged into said fixing holes, respectively. 
     
     
         3 . The foundation pile of  claim 1 , wherein a distance between said partition plate and said top cap is smaller than a distance between said partition plate and said bottom end. 
     
     
         4 . The foundation pile of  claim 3 , wherein a distance between said partition plate and said top cap is about 2000 mm. 
     
     
         5 . A method of installing a foundation pile, which includes a tubular wall, a top cap covering a top end of the tubular wall, a partition plate disposed inside the tubular wall and dividing the tubular wall into an upper space between the top cap and the partition plate, and a lower space below said partition plate, the method comprising:
 drilling a hole in the ground;   pouring a concrete slurry into the hole;   lowering the foundation pile into the hole and into the concrete slurry in such a manner that the upper space of the foundation pile is disposed above the surface of the ground;   removing the top cap of the foundation pile to open the upper space and placing a reinforcing cage into the upper space;   anchoring the reinforcing cage to the tubular wall; and   filling concrete slurry in the upper space to secure the fixing member and the reinforcing cage to the tubular wall.   
     
     
         6 . The method of  claim 5 , wherein the step of anchoring includes the step of threading a fixing member through the tubular wall and the reinforcing cage and inserting two ends of the fixing member respectively into two aligned fixing holes formed in the tubular wall. 
     
     
         7 . The method of  claim 6 , wherein the fixing member is a stiffened steel rod. 
     
     
         8 . The method of  claim 5 , wherein the concrete slurry includes expansive cement.