Abstract
This study investigates a three-dimensional (3D) base isolation and overturn resistance device. The conformation of the device is introduced. The performance of the device and dynamic responses of the structure with devices are simulated and compared. The numerical analysis results are consistent with those of the experiment, and the model and material parameters are correctly set. The horizontal and vertical hysteresis curves are full, implying that the device has good energy dissipation capacity. The results also show that the dynamic response of the proposed structure in the X-direction with a larger height-width ratio is slightly larger, and that in the Y-direction with a smaller height-width ratio is slightly smaller than those of the horizontal isolation structure. One most unfavourable height-width ratio in each direction for such response occurs when the dynamic response curve of the structure considerably fluctuates and the response is the largest.
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