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。该系统考虑了主梁与桥墩之间的动力相互作用，实现了支座的动载试验。为了了解橡胶支座在地震激励下的行为，利用所研制的加载系统进行了假定桥墩、支座和主梁的两自由度混合试验。在考虑结构与轴承的动力相互作用的情况下，通过实验获得了轴承的动态特性。

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.