Experimental study on vibration characteristics of a newly developed isolating system

Many structures constructed in the field of civil engineering have been designed principally from a viewpoint of durability against earthquake forces. The idea of seismic isolation, however, has been paid much attention in a sense of economy since the latest big hazard of the Hyogo-ken Nanbu Earthquake in 1995. A new seismic isolation system, consisting of a elastic rubber cylindrical outer shell and spherical ceramic particles packed in it, was developed in this study, and its fundamental characteristics on vibration and validity for practical use were examined by element tests on specimen and shaking table tests on model structures