抄録
Many old over-road steel railway bridges in the metropolitan area are built in an important part of the transportation network. However, there are no specific methods for evaluation of their earthquake-resistance. In this study, we have conducted cyclic load test of the pivot bearings which are widely used for such steel structures. We have proposed a hysteresis model of the pivot bearings and developed a method for evaluation of earthquake-resistance of the steel structures adopting the pivot bearings. In addition, we have proposed and experimented with a simple reinforcement method of pivot bearings, and the experiment result revealed the effectiveness of that method.
