| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a pile holding apparatus in which tensile forces applied to a plurality of sling wires can be made equal when supporting a pile by winding the plurality of sling wires around the pile. <P>SOLUTION: A pile holding apparatus is configured to suspend a pile (11) which is inserted to a pile hole (10) so as to make its axial direction vertical. The pile holding apparatus comprises a pile pedestal (20) which is installed while surrounding an inlet of the pile hole (10), a plurality of pile suspension jacks (30A, 30B) which are fixed to the pile pedestal (20) and vertically movable while suspending sling wires (19A, 19B) wound around the pile (11), and a hydraulic control device (40) which vertically moves the pile suspension jacks (30A, 30B) by allowing hydraulic oil to reciprocate with respect to the pile suspension jacks (30A, 30B). The hydraulic control device (40) allows the hydraulic oil to flow in such a manner as to load the equal pressure to all the plurality of pile suspension jacks (30A, 30). <P>COPYRIGHT: (C)2013,JPO&INPIT |
