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[1]ZHANG Liangquan,KE Jinbao.Research on the Correlation between Ground Motion Intensity Indexes and Maximum Response of the Isolation System[J].Journal of Seismological Research,2022,45(01):17-25.[doi:10.20015/j.cnki.ISSN1000-0666.2022.0003 ]

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Research on the Correlation between Ground Motion Intensity Indexes and Maximum Response of the Isolation System

Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume: 45 Number of periods: 2022 01 Page number: 17-25 Column: Public date: 2022-01-20

Title:: Research on the Correlation between Ground Motion Intensity Indexes and Maximum Response of the Isolation System

Author(s):: ZHANG Liangquan; KE Jinbao; (School of Civil Engineering,Northeast Forestry University,Harbin 150040,Heilongjiang,China)

Keywords:: isolated structure; near-field; far-field; long-period ground motions; seismic intensity index

CLC:: P315.923

DOI:: 10.20015/j.cnki.ISSN1000-0666.2022.0003

Abstract:: Firstly,we select 60 records including 20 near-field,long-period seismic records and 20 far-field,long-period records of the processed Chi-Chi ground motion data,and 20 far-field,long-period records of the processed Wenchuan ground motion data as input ground motion.Then,we get the intensity-indexes suitable for the long-period ground motion by studying the intensity parameters corresponding to each seismic record.Then we use Pearson correlation-coefficient to analyze the correlation between the intensity-index and the maximum displacement response of the isolation system.The results show that when the isolated structures are subjected to the long-period ground motion in near- and far-field,the maximum displacement response of medium- and long-period isolated structures is well correlated with spectral characteristic parameters.When we study the aseismic performance of medium- and long-period isolated structures,we find that the indexes PGD,Sd_avg and DSI have a good correlation with the isolation structure.We recommend PGD and Sd_avg for the intensity indexes in near field,DSI and D/V for the intensity indexes in far field of Chi-Chi earthquake event.And we recommend Sd_avg and DSI for the intensity indexes in far field of Wenchuan earthquake event.Considering the degree of correlation of the intensity indexes with the isolated structures,we recommend PGD for the near-field,long-period intensity index,and DSI for the far-field,long-period seismic intensity index.

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Last Update: 2022-01-20