Vibration Table Experimental Study Of Bearing Radio To Composite Isolation System

Application isolation technology in buildings can effectively reduce the energy generated by earthquakes that Passed to the building from the ground When an earthquake occurs,and make full decoupling of buildings with the ground to reduce the seismic response of buildings. Two types isolation techniques are rubber sliding friction isolation technology and technology of friction sliding is now used more at domestic and foreign. Parallel composite isolation system is parallel used the laminated rubber bearings and friction sliding bearings [1], and the frictional sliding bearings bear the weight of some of the buildings. This isolation technique combines the advantages of the two isolation system and also excludes its shortcomings.In this paper, a shaking table test for steel frame model of parallel composite isolation is analyzed, in order to research parallel composite base-isolation system of isolation performance. In the paper, the experiment model design, installation process, data acquisition instrument and measuring, and seismic wave choice is analyzed in detail, and given the grouping of model test and working arrangements.Shaking table test for parallel composite base-isolation system of different friction pressure-bearing ratio in different site seismic waves and different peak acceleration seismic waves, and through data processing draw basal shear time-history curve, displacement time-history curve and isolation layer of hysteric's curve. Contrast test data research problems as follows:(1) The influence of friction pressure than for Parallel composite base-isolation system, and draw the optimal pressure ratio of parallel composite base-isolation system through the analysis of the data; (2) The influence of different venues category seismic waves for Parallel composite base-isolation system; (3) Contrast basal shear of composite seismic-isolation structure of different friction pressure-bearing ratio in different peak acceleration seismic waves and conclusion; (4) Different frequency sine wave test was conducted in vibration bench for model, obtained the change rule of hysteric's curve and consumption status through the analysis of the data.Simulation parallel composite base-isolation system and seismic system in finite element software under the conclusion of structure model shaking table test to masonry structure residential houses. Contrast the Natural vibration period, Basal shear, Floor acceleration and Displacement between floors of this two systemsFurther study the influence of friction and pressure ratio to composite base-isolation system, by analysis the seismic response of parallel composite base-isolation system under earthquakes.