An experimental study of the equipment isolation effect as the input seismic motions

In this study, the shaking table tests are performed for the analysis of the equipment isolation effects associated with the input seismic waves and the structural characteristics. For the purpose of this study, the seismic waves which frequency contents are much different were selected. The three kinds of structures which natural frequencies are different are designed and constructed for the shaking table test. The Friction Pendulum System (FPS), natural rubber bearing (NRB) and high damping rubber bearing (HDRB) were selected for the isolation. Finally, the equipment isolation effect as the frequency contents of input seismic waves and the structure types are determined