隔震支座参数对框剪加层结构减震性能的影响

Influence of isolation bearing parameters on damping performance of storey-adding frame-shear structure isolation system

通过在框剪结构加层改造中采用隔震支座,改变支座的刚度和阻尼比对结构进行模态和时程分析,探索这2种参数对加层隔震体系的影响规律.分析表明当隔震体系应用于加层改造工程时,其减震效果尤为明显,减震效果随着隔震支座参数的变化呈现一定的规律性.

Based on establishing the steel structural isolated structure model added on frame- shear structure, this article carries out time-history analysis and model analysis of structure by changing stiffness and damping ratio, explores the influence rule of these two parameters on storey-adding seismic isolation system. The analysis shows that when the applied additional layer isolation system works in the transformation, its damping effect is particularly evident with the damping effect of isolation bearing parameters a certain regularity.