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论文类型：期刊论文

发表时间：2022-06-30

发表刊物：世界地震工程

卷号：30

期号：2

页面范围：36-42

ISSN号：1007-6069

摘要：By the use of energy method,the seismic energy dissipation mechanism and
   energy response of parallel compositon isolation system were analyzed
   and discussed. Firstly, on the basis of multi-degree-of-freedom motion
   differential equation for story shear model, the energy equilibrium
   equation of parallel composite isolation system was established.
   Secondly, the state space method was introduced to perform the time
   history analysis so as to obtain seismic responses of the above
   system,and on this basis, different energy items were calculated.
   Finally, taking a seven-degree-of-freedom system for an illustrative
   example, the energy dissipation mechanism of the parallel composite
   isolation system was analyzed ; the effects of its main parameters of
   isolated layer and the characteristics of different earthquake ground
   motions on seismic energy response of parallel composite isolation
   system were discussed. The results show that total seismic energy input
   of parallel composite isolation system is mainly borne by the hysteretic
   energy dissipation and damping energy dissipation ; Friction bearing
   ratio and friction coefficient has important effects on the seismic
   energy responses,and there are optimal ranges of their values ; the
   seismic energy responses are greatly influenced by the earthquake ground
   motion characteristics.

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