抄録
Many old steel railway bridges with pivot bearings had been used at important parts of the metropolitan transportation network. We had evaluated their basic characteristic on seismic behavior. However, there are various structural types, for example, with unbalanced span ratio, sharp skew, or brace members between the pillar form piers. In this study, we discuss the effect of these various structural types on seismic behavior by cyclic load test of the pivot bearing and seismic response analyses for full structures. In addition, we propose the estimated formula of maximum seismic response for pivot bearings.
