Dynamic Response Analysis And Experimental Research On Structure With FPS Typed TMD

Structural vibration control is an advancing front research subject of civil engineering. The technology provides a new effective seismic reduction means for structure. Tuned mass damper is an effective passive control device. Currently, in the world, there are many tuned mass dampers installed in constructions for energy dissipation and vibration control. Compared with the traditional seismic design, the technology itself can give full play to the performance of structural materials, can effectively reduce earthquake damage, and ensure a comfortable living.Friction pendulum system typed tuned mass damper is a new seismic reduction device. It has the ability of self-limited and restoration, and uses friction between the slide and mass to dissipation energy, provides the necessary damping. This paper analyzes the composition and mechanical model of the device, gets its dynamic mechanical properties and basic parameters. And then, how to design a FPS-TMD is introduced in the paper.In this paper, the dynamic equation of a structure with FPS-TMD is established. In order to solve the dynamic equation, Newmark numerical method is introduced. And using the structural finite element software SAP2000, do non-linear time-history analysis of a four-storey steel frame with and without the FPS-TMD. Results show that FPS-TMD can effectively reduce the structural dynamic response. Under the sine wave, the response of top level decreased about 30%, under earthquake, the response decreased above10%, maximum to 25%. And the mean square root of the response decreased above20%, more effective than that of the peak point of structural response. Spectrum curves of the results show that FPS-TMD can reduce the response of controlled frequency, and have a certain effect on high mode.One FPS-TMD is designed and produced according to its design parameters. And shaking table test is done on the structure with FPS-TMD. The result shows that FPS-TMD can decrease the response of the structure above 50%, when the frequency of the input wave is similar to the frequency of controlled structure. The Device can effectively control the resonance of structure. Shaking table test prove the seismic control of the FPS-TMD to be effective. Compared with the results of the test and finite element analysis, it is found that they are tally with each other, and which proved the finite element method used in this paper to be accuracy and reliability.The analytical method used in this paper and the research findings give reference for further research on FPS-TMD.