Mega Frame Use Effect Of The Dry Friction Plate- Spring Vibration Isolation System Analysis

During an earthquake action,mega frame is mainly under horizontal force, so the dry friction plate- spring vibration isolation system adopted by mega frame and proposed in this paper mainly studied in the structure under horizontal earthquake. The quality tuned damper is passive in terms of seismic. The passive devices are attached to the main structure as usual. It is mainly applied in the middle of the high-level, high-rise building or bridge, tower, etc. The friction plate is set in this paper on the basis of the TMD. There are three control factors studied in this paper to influence the effect of the dry friction plate- spring vibration isolation system, which means that the seismic response of structure is studied from three variables change respectively.Assume that structure set a total of 21 layers and each supporting body includes 7 layers.Studying different reactions under seismic action of mega frame with the dry friction plate- spring vibration isolation system and without dry friction plate- spring vibration isolation system by entering a different seismic wave, and introducing its motion equation, the response of different seismic dynamic can be compared and computed.Through the analytical and calculation, the paper obtains the following conclusions:(1) The equation is established about the mega frame which sets dry friction plate spring vibration isolation system, which is used for calculating and analyzing.(2) The mega frame structure which sets the dry friction plate- spring vibration isolation system is reduced the displacement between layers of structure. If the selection of stiffness, friction coefficient between the layers and the equivalent damping coefficient are suitable, the effect of vibration isolation will have exceeded 70%. When the interlaminar stiffness coefficient takes 160000 k N/m, sliding friction coefficient takes u around 0.01;the effect of shock absorption will be the best.(3) Comparing with the two results from two mega frames, the one which sets dry friction plate- spring vibration isolation system structure is better than another one which does not equipped with dry friction plate- spring vibration isolation.