TW262506B - Branched foundation pile - Google Patents

Abstract

A branched foundation pile, which mainly comprises a hollow foundation pile cylinder of which its top end is installed with a punch head and its bottom end is installed with a sharp end; which is characterized in that: an appropriate location inside the hollow cylinder is installed with at least one pair of oil cylinder, and movable doors capable of being pushed open toward outside are installed on the circumferencial positions of the foundation pile corresponding to the two rods of oil cylinder, in which each movable door is pivotally connected to the rod to form an integral part so that the oil cylinder is pivotally installed between the two movable doors, and a hydraulic passage is connected to each oil cylinder and extended to the top end of the pile body; through the above elements, when the pile is punched into the fixed location in the ground, the hydraulic passage is injected with hydraulic fluid and pressurized so that the rods of oil cylinder push out the movable doors and consequently the soil outside the movable doors is compacted, next cement slurry is injected through the central through hole in the pile body so that part of the cement slurry is extruded into the space formed by the movement of the movable doors (or injected by pressurized extrusion) so that the pile body forms branched support in which the branched support increases the load strength and pull strength of the pile cylinder and reinforces the anchoring capability of the foundation pile.