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根据拉格朗日方程推导了结构设置双滑动面DFPS隔震系统的地震动力反应分析计算公式.分析与计算结果表明:结构基础设置DFPS具有明显的隔震效果,楼层位移沿结构高度分布趋于均匀,层间位移、速度及加速度明显减小.隔震效果与滑道半径、接触面摩擦系数有关,二者合理组合可以得到很好的隔震效果.当摩擦系数取0.05、滑道半径取3.5m时,隔震效果达70%左右.
According to the Lagrange equation, the seismic dynamic response analysis formula of the DFPS isolation system with double sliding surfaces is deduced. The analysis and calculation results show that the DFPS has obvious isolation effect, and the floor displacement along the structure height distribution tends to Uniform, interlayer displacement, velocity and acceleration obviously reduce.The effect of isolation is related to the slideway radius and contact surface friction coefficient, and the reasonable combination of the two can get good isolation effect.When the coefficient of friction is 0.05, 3.5m, the isolation effect of about 70%.