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Han M，Jiang J W，Du H K，Zhao M H. 2022. Effect of pulse characteristics of near-fault ground motions on the response of equipment-structure coupled isolation system. Acta Seismologica Sinica，44（5）：891−902. DOI: 10.11939/jass.20220129
Citation: Han M，Jiang J W，Du H K，Zhao M H. 2022. Effect of pulse characteristics of near-fault ground motions on the response of equipment-structure coupled isolation system. Acta Seismologica Sinica，44（5）：891−902. DOI: 10.11939/jass.20220129
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Effect of pulse characteristics of near-fault ground motions on the response of equipment-structure coupled isolation system

  • Beijing Advanced Innovation Center for Future Urban Design，Beijing University of Civil Engineering and Architecture，Beijing 100044，China

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  • Received Date: July 18, 2022
  • Revised Date: August 21, 2022
  • Available Online: September 08, 2022
  • Published Date: September 14, 2022
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    • Abstract
  • Based on the model of equipment-structure coupled isolation system, 50 near-fault pulse-like seismic waves were selected and the effect of period ratio TP/T （the ratio of the pulse period to the basic period of the structure） and pulse energy on the structural response was analyzed using TP/T＝1 as the dividing line; and the relationships between the displacement ratio of isolation layer and the period ratio and pulse energy were fitted while the zero-crossing times is not less than 5. The analyses show that the influence of pulse characteristics on the structure is mainly related to the period ratio TP/T and the pulse energy, while the influence of the zero-crossing times of the acceleration curve corresponding to the velocity pulse needs to be considered. Furthermore, the equipment response is directly related to the top floor acceleration, but there is no significant direct correlation with the pulse characteristics of near-fault ground motions.
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