Isolated Effect Analysis Based On Shake Table Experiment

The key contents of the dissertation are to analysis the performances of the three-floor steel frame through shake table experiments and computer software Sap2000, and to research the isolated effect of frame and energy-transfer principles of the isolated and un-isolated structure. And then to supply some gist for applying FPS structure to practice through quantifying evaluate and analysis.The FPS structure mentioned above is Steel-Teflon component designed and manufactured by ourselves, so it has some disadvantages which lead the friction coefficient as large as 10% and the four FPS'friction degree are different with each other. Therefore, all the analysis results are pointed to the FPS structure which has the similar performance with our experiments'.The shake table experiments and computer software analysis of the dissertation are to input single inspirit to the structures used different earthquake waves with different acceleration peaks. It is found that the acceleration response of isolated frame is larger than un-isolated frame with 0.2g earthquake wave through floor-acceleration contrast plots of isolated and un-isolated frame. And with the increasing of earthquake acceleration, the floor responses of the isolated frame are decreased fast compared to un-isolated frame. When to input 1.2g earthquake wave, they are near to 1 of the isolates frame floor-acceleration response enlarge scales. It means that FPS isolated frame acceleration responses are near to earthquake waves, namely, this kind of FPS has much stronger capability to segregate larger acceleration earthquake waves.Owing to the large friction coefficient, FPS relative distance is small under the 0.2g earthquake waves, and the sliding time is relative late; as the increase of the acceleration, the FPS relative distance is increase too, and it is quickly to begin to slide. Consequently, the large friction coefficient has big infection on FPS structure.To analysis the structure time-energy curve plot, it is found that the FPS can protect frame escaping from the demolishing of the seism, that it can segregate 90% of earthquake energy and the upper structure just consume under 10% energy. But the un-isolated structure must consume nearly 99% of the earthquake energy; therefore it is much easier to be destroyed.