| 摘要 |
PROBLEM TO BE SOLVED: To provide a construction method and apparatus for a cast-in-place pile that can secure a designed pile diameter by pressing concrete into a cover part through the mesh of a reinforcing cage against the ground intruding while filling a space of a thickness part formed behind a casing pulled out after the placement of concrete in the construction of the cast-in-place pile. SOLUTION: The apparatus including a weight body and a vibrator extending downward is prepared after the placement of concrete of predetermined height in an excavated pile hole. The apparatus is placed on the concrete surface before starting to pull up the casing, and the concrete is pressed into the cover part through the reinforcing cage by the load weight of the weight. With the start of pulling up the casing, the vibrator is operated to allow concrete with increased fluidity to oppose the ground intruding while filling the space formed behind the casing, thus securing the designed pipe diameter of concrete. COPYRIGHT: (C)2011,JPO&INPIT
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