| 摘要 |
PURPOSE:To erect a structural center pillar into a reverse pile by a method in which a structural center pillar and a follower pillar are connected in a Benoto pit near the supporting pile pit and dropped into the pit by guiding the round pipe of the follower pillar along the guide rail of a centering tool set at the top of the supporting pile pit. CONSTITUTION:A follower pillar setting tool 7 is set at the top of a Benoto pit 6 excavated near a supporting pile pit, and under the condition that the top of a structural center pillar 8 is clamped, a follower pillar 10 is hung and set. Also, both the pillars 8 and 10 are connected through an oil-pressure jack 20, and by expanding or shrinking the jack 20, the vertical accuracy of the follower pillar 10 corrected in relation to the structural center pillar 8. When the round pipe 10b for guiding the follower pillar 10 is insertionally dropped into the vertical guide rail 24d of the guide frame 24 of a centering tool 21 set at the top of the supporting pile pit, the structural center pillar 8 can be erected in place. |
