SHAKING TABLE TEST FOR THE STRUCTURE WITH THREE-DIMENSIONAL BASE ISOLATION AND OVERTURN RESISTANCE DEVICES

Shaking table tests of a high-rise frame structure model under three dimensional ground motion excitations were carried out. There were passive control devices of independent intellectual property rights under the base of the model and the devices were named three-dimensional base isolation and an overturn resistance device with a disk spring (3D-BIORD-DS). The design principles and mechanical property tests of the devices were introduced. The tests results show that whether the inner wire rope stagger has influence on the horizontal properties of the device, the device has enough vertical bearing capacity. Then, shaking table tests of the model were performed for the study of structural responses under four different ground motions. The analyses for the test results indicate that the devices can reduce the three dimensional seismic responses well, whether for the short-period ground motions or the long-period ground motions. But the tilt angle reactions of the structure are relatively large, which show that the vertical stiffness of the device should be designed more reasonably for the workability requirement.