| 摘要 |
PURPOSE: A pile pressing method using a bit system is provided to extend the life of piles by reinforcing the strength of the piles press-fitted in holes and to reduce costs by reducing the number of the press-fitted piles. CONSTITUTION: A pile pressing method using a bit system includes next steps. A reinforcing bar for structural reinforcement(60) is installed and welded on the exterior of a structural casing steel pipe used as a pile. The casing steel pipe with the reinforcing bar for structural reinforcement and a casing shoe are coupled. A bit system is inserted inside the structural casing steel pipe. A rotary and a pneumatic piston are connected to a guide device of the bit system. The bit system drills the ground by the rotating force of the rotary and the stroke of the pneumatic piston. The rotary and the pneumatic piston are removed and a bit and the bit system are drawn out from the casing steel pipe by a drawing machine. Grouting injection liquid is injected through multiple injection holes(50) formed in the steel pipe by using a packer device.
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