| 摘要 |
PROBLEM TO BE SOLVED: To provide a pulling-out vibrator that reliably supports the pulling-out vibrator and the cable, and can easily be removed outside a formwork after the completion of the compaction, when compacting concrete placed in the vicinity of the top end of the tunnel lining by the pulling-out vibrator.SOLUTION: A supporting tool 10 is provided for supporting a pulling-out vibrator and a cable 50 for use in compaction from a lower side, when placing concrete in the top end vicinity of tunnel lining. The supporting tool includes a tabular body part 11 capable of being inserted and removed between a tunnel inner space side and a natural ground side through an insertion hole 21 provided to a tunnel lining formwork 20, and a support recess 12 of a substantially U-shaped cross section provided in the insertion tip side of the body part 11. Also, the body part 11 can include a fastening part (fastening hole 14) fastened to the tunnel lining formwork 20, and further includes a gripper so as to be positioned in the inner space side of the tunnel lining formwork. |
