| 摘要 |
An elastic bearing for supporting a bridge with easy maintenance is provided to improve the installation structure of a wedge for replacing the damaged wedge by an earthquake with a new wedge easily. An elastic bearing(1) for supporting a bridge with easy maintenance includes an upper plate(2) fixed to the bottom of an upper structure of a bridge, a lower plate fixed to the top of a pier, a rubber pad(4) absorbing an impact between the upper plate and the lower plate, an upper wedge(20) fixed to the bottom of the upper plate around the rubber pad, and a lower wedge(300) fixed to the top of the lower plate in close vicinity to the upper wedge to restrict the movement of the upper plate, wherein the upper wedge is fixed to the bottom of the upper plate, and the lower wedge is formed to have an L-shaped cross section by a horizontal beam(360) fixed to the lower plate around the rubber pad and a vertical beam(350) fixed to a distant part from the rubber pad, the horizontal beam is coupled to the lower plate by a wedge fixing bolt(321) inserted downward from the top and a notch(353) is formed on the surface of the vertical beam in the longitudinal direction of the lower wedge. |
