| 摘要 |
PROBLEM TO BE SOLVED: To provide a rubber support for a bridge excellent in a damping characteristic, and excellent in durability. SOLUTION: A upper flange 2 and a lower flange 3 are integrated above and below laminated rubber 1 by bolts 4, and an upper shoe 5 and a lower shoe 6 are fixed to these flanges 2 and 3 by bolts 7. The laminated rubber 1 is formed by alternately laminating a rubber layer 9 and a hard plate layer 8 composed of a metallic plate such as stainless steel. This rubber layer 9 is high damping rubber 9a on the inside, and low damping rubber 9h on the outer periphery. The area of the high damping rubber and the area of the low damping rubber are adjusted, and an equivalent damping constant is set 0.05<=h<0.1. |
