PROBLEM TO BE SOLVED: To provide a device that enables concrete to be infilled into a clearance part on the backside of a casing by making the concrete inside a cage also flow.;SOLUTION: A compaction device comprises a horizontal girder, a hanging material and a vibrator. The horizontal girder, which is a long material for being almost horizontally laid at an upper end of a casing, supports the vibrator in a hanging state. The vertical hanging material directly and indirectly connects the horizontal girder and the vibrator together. When the horizontal girder is laid at the upper end of the casing, the vibrator at a lower end of the hanging material is positioned near a lower end of the casing.;COPYRIGHT: (C)2015,JPO&INPIT
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