| 摘要 |
PROBLEM TO BE SOLVED: To provide a sliding bearing for a structure, effectively utilizing large vibration energy based on a strong earthquake, thereby preventing an upper structure from slipping off from a lower structure, having no risk of a collapse and achieving reduction in manufacturing cost and fully occupying space. SOLUTION: This sliding bering 1 for a bridge is interposed between a bridge pier 2 and a bridge girder 3 to support the bridge girder 3 to the bridge pier 2 to freely move in the bridge axial direction H in the horizontal direction. The sliding bearing 1 includes: a sliding plate 8 fixed at its top face to the lower surface 6 of the bridge girder 3 through a fitting plate 7 fixed to the lower surface 6 of the bridge girder 3 and having an upper sliding surface 5 on the lower surface; a sliding plate 10, which comes into contact with the upper sliding surface 5 to freely slide in the H direction and has a lower sliding surface 9 bearing the vertical load of the bridge girder 3 through the upper sliding surface 5, the sliding plate 8 and the fitting plate 7 on the upper surface; and a restoring force generating means 11, which generates restoring force to the relative displacement in the H direction more than fixed of the bridge girder 3 to the bridge pier 2. COPYRIGHT: (C)2009,JPO&INPIT
|
