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Date of Publication:2017-01-01

Journal:工程力学

Volume:34

Issue:11

Page Number:202-209

ISSN No.:1000-4750

Abstract:The building isolation structure is mainly used to weaken the influence
   of the earthquake on the superstructure. The upper impact, from the
   aircraft crash on the containment with the isolation system, is also an
   important issue to ensure the safety of nuclear power station. In order
   to evaluate the coupling dynamic effect of the isolation system and
   aircraft crash, a detailed dynamic numerical model of the containment
   has been established in the paper. Moreover, dynamic response analysis
   of the containment suffering three different types of aircraft crash is
   carried out under the conditions of three different isolation bearings
   and non-isolation. The results show that some changes occur to the
   displacement of the center node at the impact position which is related
   to the magnitude of the impact force during the period of aircraft
   crash. While the distribution of damage area has little change. However,
   the stiffness of the vibration isolation bearings has great impact on
   the containment-vibration-attenuation process after the impact load of
   aircraft. Based on this study, in the stage of isolation system design,
   it is essential to consider the isolation performance of isolated system
   as well as the influence of the aircraft impact to determine the
   appropriate parameters of vibration isolation bearings.

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