| 摘要 |
PURPOSE: A cast-in-place pile construction method using a perforated steel pipe is provided to prevent concrete from separating from materials and to increase the axial compression section force of a pile by applying hoop tension as additional resisting power in acting vertical force. CONSTITUTION: In a cast-in-place pile construction method using a perforated steel pipe(1), plural piles(3) are installed in the ground to prevent the engineering and construction structures from settling. A stiffener is inserted in the pile and formed as a small perforated steel pipe with small diameter for flowing in and out concrete(4). Plural through-holes(2) are formed on the surface of the perforated steel pipe. The cast-in-place pile construction method increases the axial compression section force of the pile by filling the inside of the pile with the concrete through the through-holes of the perforated steel pipe.
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