DYNAMIC EXPERIMENTS OF SCALE EFFECTS ON FUNDAMENTAL AND ULTIMATE CHARACTERISTICS IN NATURAL RUBBER BEARINGS

As seismic isolation buildings have become higher in recent years, seismic isolation members have become larger in size. However, the seismic behavior of large seismic isolation members and the differences in behaviors between full-scale and reduced-scale specimens due to scale effects have not been clarified. In this paper, dynamic experiments were conducted using E-Isolation, which is the testing facility to conduct dynamic tests on full-scale seismic isolator, and investigate the scale effects on the fundamental and ultimate characteristics of natural rubber bearings with rubber diameters of 300, 600, and 1100 mm.