Stability of Elastomeric Seismic Isolation Bearings Under Extreme Earthquake Loading

Two isolation systems each composed of four identical elastomeric bearings were tested on shake table on University at Buffalo. The isolation systems were subjected to horizontal and horizontal plus vertical excitation. The lateral displacement, shear force, vertical force and acceleration response of individual bearing and isolation system under earthquake excitation were collected through the testing.

美国布法罗大学（University at Buffalo）的振动台（shake table）试验中，针对两套分别由四个相同叠层橡胶隔震支座（elastomeric bearing）组成的隔震系统开展了测试。试验过程中，该隔震系统先后承受单向水平地震激励与水平-竖向复合地震激励。本次试验采集了地震激励下单个隔震支座以及整套隔震系统的侧向位移、剪力、竖向力与加速度响应数据。