| 摘要 |
PURPOSE: An extension structure for a foundation pile is provided to extend a service life by restoring an existing subsiding structure through the reinforcement of a foundation pile. CONSTITUTION: An extension structure for a foundation pile comprises upper and lower foundation piles(1a,1b), upper and lower pile caps(2a,2b), a hydraulic jack, an extension pile(5), a pile guide socket(6), and a pile guide socket cover(7). The upper and lower foundation piles are separated from each other by cutting a portion of a pile where the hydraulic jack is installed. The upper and lower pile caps have screw insertion grooves. The hydraulic jack is installed in the cut portions of the upper and lower foundation piles. The extension pile is inserted into the space formed between the hydraulic jack and the lower foundation pile. The pile guide socket surrounds from a contact portion with the hydraulic jack of the upper pile cap to a specific portion of the extension pile. The pile guide socket cover is inserted into the cut portion of the pile guide socket to protect the extension pile.
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