Mechanical Model Analysis Of The Combined Isolation System

Isolation technology is in the upper structure and foundation through between setting isolation, structure of the lateral vibration of basic cycles, thus reduce the upper structure of horizontal seismic response. We used the isolation device is lead-rubber bearings, the friction and sliding bearings and combined isolation system. Among them, combined isolation system is made of lead-rubber bearings and the friction and sliding bearing according to the different proportion. Combined isolation system on mechanical properties and isolation effects are better performance. Therefore, the research combined isolation structure in the anti-seismic aspects of application is very necessary.Using finite element analysis software SAP2000, a practical engineering application, and separately calculated the rubber bearings and combined isolation device (rubber bearings and skateboard ratio for 1 and 6) after the earthquake isolation, structure, the reaction between layers of displacement and acceleration curve, and put them under the condition of isolation and seismic response of comparison and analysis the vibration-isolation effectiveness. Research results show that the structure of earthquake isolation could well increase the original building aseismic performance, can effectively restrain the earthquake energy structure, the transfer of decrease of earthquake responses of structures. In the total number of bearings under the condition of invariable, along with the increase in the Numbers of slide bearing, the structure of the isolation effect more apparent.Based on the calculation of isolation, based on finite element method and the practical calculation method of damping coefficient of comparison, the level that combination of isolation system can use the effect of laminated rubber bearings shock-isolation technology rules proposed method to calculate.