シングル球面すべり支承で支持された橋梁の活荷重時挙動に関する研究

抄録

A spherical sliding bearing (SSB) has been only used as a seismic isolation bearing for buildings in Japan. In general, the behavior of the SSB under seismic forces have been the main focus on this bearing. In order to apply the SSB to bridges, it is necessary to ensure that the SSB performs properly under all design loads. Therefore, this study investigated the behavior of the SSB under live load actions by static cyclic loading tests on a bridge superstructure model supported by single SSBs. Especially, the rotation of the bearing and the displacement of the slider followed by the deflection of the superstructure were investigated. Also, the finite element analyses were carried out to simulate the static loading tests and to investigate the behavior of the bearing.