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对某重要办公楼进行了基础隔震设计,研究了其强震下的隔震效果;基于时程分析法,建立了在飞机撞击下的评价点绝对加速度反应谱,分析了飞机撞击区域应力的变化。研究结果表明,评价点的反应谱峰值出现的位置由隔震前的高频段挪至隔震后的低频段;撞击区域应力有所降低;当飞机的速度小于145 m/s时,隔震层的位移小于规范规定的最大容许位移。
Based on the time history analysis method, the absolute acceleration response spectrum of the evaluation point under the impact of the aircraft is established, and the stress of the impact area of the aircraft is analyzed. Variety. The results show that the peak of the response spectrum at the evaluation point moves from the high frequency before isolation to the low frequency after isolation; the stress in the impact area decreases; when the speed of the aircraft is less than 145 m / s, The displacement is less than the maximum allowable displacement specified in the code.