For seismic design under large-scale earthquakes, unseating prevention systems at the supports of railway steel bridges become large size and sometimes cannot be installed in the limited space. To enable a compact-sized device, authors proposed a concrete encased steel frame (SRC) stopper. However, the evaluation method of its capacity is not clearly established. In this study, the failure mode and the capacity against lateral force of the SRC stoppers were clarified through static loading tests. To evaluate the capacity of the inserted area into RC pier, stress behavior was discussed using 3-D finite element analyses. Considering these results, an evaluation method of shear load-carrying capacity of SRC stoppers including the inserted area was proposed.
抄録全体を表示