Effects Of Isolation Bearing Parameters And Structure Parameters On The Isolation Effect

The earthquake not only brought damage to the buildings but also brought harm to the people.It is also very important to study the seismic isolation bearing parameters and the structure of the isolated structure.So this paper for isolation of research mainly from two aspects of research,including isolation of related parameters and structure parameters,the level of research support stiffness and bearing the equivalent damping ratio of isolation effect influence,and different concrete strength grade and different ratio of height to width of base isolated structure isolation effect,the conclusions are as follows:(1)Effect of the structure of the isolated bearing on the parameters of the isolated bearing.The horizontal stiffness of the isolation bearing has a certain influence on the peak acceleration and the displacement of the isolation layer.In frequent earthquake and rare earthquake,bearing stiffness increases,the vibration cycle is reduced,increased acceleration at the top of the peak,peak displacement of isolation layer decreases,the isolation effect of the structure will be relatively reduced.Bearing the equivalent damping changes and structure of the peak acceleration in the top and isolation layer displacement will also affected by damping than in between 0.2~0.25 structure vibration isolation effect better,appropriate damping ratio is the structure has good vibration isolation effect of the main factors.(2)With the increase of concrete strength grade,the vibration period of the isolated structure with seismic structure growth rate also increased,isolation structure at the top of the peak acceleration decreases,isolation structure of the interlayer displacement decreases,structure stiffness,seismic isolation effect is more obvious.(3)The stiffness of the structure has influence on the seismic isolation effect.The high aspect ratio of isolated structure makes the dynamic response of the structure different.When the aspect ratio meet the requirements through on three different height to width ratio of isolated structure research,can be obtained,with the increase of height width ratio,isolation structure with respect to the seismic structure of the interlayer displacement rate reduction is certain drop,width and height than the interlayer displacement of isolated structure layer and the interlayer displacement angle is larger,the isolation effect relative weak.