英文摘要 |
A series of large-scale experimental tests is conducted on a mass equipped with a hybrid controlled base-isolation system that consists of rolling pendulum system(RPS) and a 20 kN magnetorheological(MR) damper. The 12-ton mass and its hybrid isolation system are subjected to various intensities of near-and far-fault earthquakes on a large shaking table. Fuzzy controllers use feedback from displacement, and acceleration transducers attached to the structure to modulate resistance of the semi-active damper to motion. The study shows that a combination of rolling pendulum system and an adjustable MR damper can provide robust control of vibration for large civil engineering structures that need protection from a wide range of seismic events. Low power consumption, direct feedback, high reliability, energy dissipation, and fail-safe operation are validated in this study. |