| 摘要 |
The present invention relates to a support device installed between an upper structure of a bridge and a bridge post to repair a bridge seat. Pressure resistant particles in each support base are discharged at once to simultaneously lower four points of an upper deck supporting the bridge. Expansion and contraction of the bridge while repairing the bridge seat can be absorbed by a sliding action between a friction reduction plate and a sliding plate installed on the upper deck. Accordingly, a load is not concentrated on any one among screw bars to prevent deformation or damage to the screw bars, reduce thicknesses of the support bases and the screw bars by a half or more, and prevent deformation or damage to the support device by a shearing force. |
