Patent ID: 7736095

Claim:
A pile assembly employed in engineering and construction works comprising a pile body formed in a hollow column with an interior hollow space defined by inner surfaces of columnar sidewalls extending lengthwise in the direction of a longitudinal axis of the pile body, and a plurality of openings provided at intervals through the sidewalls thereof, wherein the inner surfaces of the sidewalls have a given number of guide rails fixed thereto which are spaced at equal intervals circumferentially around the sidewalls and extending in parallel with the longitudinal axis thereof, and a core assembly having a movable base member mounting a plurality of longitudinally extending wedge members ending with tips thereon mounted within said pile body, wherein said movable base member has a plurality of guide grooves the same number as guide rails which are spaced at equal intervals circumferentially around a periphery of the base member and are aligned in parallel with the longitudinal axis and adapted to engage the respective guide rails extending axially lengthwise in the interior hollow space of the pile body for allowing a guiding of movement of said core assembly within said pile body, wherein said core assembly is guided via said guide grooves engaged with the guide rails for movement within the interior hollow space of the pile body to appropriately lead the tips of said wedge members to engage said openings and be projected out from the columnar sidewalls of said pile body, wherein said pile assembly is formed by splicing together the pile body divided in 2 or more portions, with said core assembly provided in each of said divided pile body portions, and wherein said guide rails are provided to extend across the length of each of said divided pile body portions respectively.