| 摘要 |
PROBLEM TO BE SOLVED: To improve an earthquake resistance performance of bridges such as dam sluice gate piers, a road bridge, pedestrian bridge, railway bridge and the like.SOLUTION: A damper 70 to be rigid-frame in earthquake is proposed in which a damping target structure is made into rigid-frame structure by restricting or suppressing the displacement of a connection part of the damping target structure in a bridge axis direction and the rotation around an axis in a direction orthogonal to a bridge axis in the case of earthquake. By connecting dam sluice gate piers 31-35 and a management bridge 40 using the damper 70 to be rigid-frame in earthquake, a temperature load is released at a normal time and the rigid-frame structure is provided in the case of earthquake, thereby improving an earthquake resistance performance of the dam sluice gate piers 31-35. Furthermore, the damper 70 to be rigid-frame in earthquake is applied to bridges (general bridges) such as road bridge, pedestrian bridge, railway bridge and the like, an earthquake resistance performance of the bridges (general bridges) is improved. |
