Evaluation of bearing's failure process through real-time hybrid experiment

本研究开发了一套实时子结构混合实验系统。该系统能够考虑梁与墩之间的动力相互作用，对支座进行动载试验。采用所开发的加载系统，进行了桥墩、支座和主梁的二自由度混合试验，以了解橡胶支座在地震作用下的性能。结果表明，考虑结构与轴承之间的动力相互作用，轴承的动力特性是通过实验得到的。

In this research, a real-time substructure hybrid experiment system was developed. This system enables the dynamic loading test of the bearing, considering the dynamic interaction between girder and pier. A 2DOF hybrid tests assuming the pier, bearing and girder were carried out using the developed loading system, in order to comprehend the behavior of the rubber bearing under earthquake excitation. It was confirmed that the dynamic characters of the bearing was experimentally obtained, considering dynamic interaction between structure and bearing.