关键词: 分段隔震, 混合被动控制体系, 减隔震效果, 时程分析, 频域, 震动

Abstract: Taking the high-storey framework structure as object, a new type hybrid passive control system is proposed based on segmental seismic isolation combined with energy dissipation of inter-connected adjacent buildings as dampers, which can effectively cope with wide-range ground motion and has higher robustness and redundancy. Through numerical simulations of an identical high-rise building structure respectively with non-isolated form, segmental seismic isolation form and hybrid passive control form, the effect of seismic reduction and isolation of the segmental seismic isolation system and hybrid passive control system is investigated under the action of short-period wave, sliding effect included impulse wave and long-period wave. It is shown by the investigation that the control effect of segmental seismic isolation system will be better under the action of short-period wave, but its control effect will not so good under the action of impulse wave and long-period wave due to the greater displacement of the base seismic isolation storey and intermediate seismic isolation storey and there will be a possibility that this displacement is larger than the limit value of the support displacement. Nevertheless, the hybrid passive control system will be able to reduce effectively the displacement of the seismic isolation storey and improve obviously the seismic reduction and isolation effect of the structure. And the hybrid passive control system will have better seismic reduction and isolation effect when the intermediate isolation storey is set in the middle of the structure.

Key words: segmental seismic isolation, hybrid passive control system, seismic reduction-isolation effect, time history analysis, frequency domain, ground motion