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- W2381569641 abstract "To provide the selection and evaluation of long-period earthquake ground motions with a quantitative criteria a new methodfor the evaluation of seismic periodical characteristics is proposed based on the energy characteristics of ground motions derived from Hilbert-Huang Transformation analysis.The difference of the time domain and frequency domain characteristics between the typical conventional ground motions and the near-field/far-field long-period ground motions are obtained through the analysis of the time domain,spectrum distribution,acceleration dynamic magnification factors spectra and periodical characteristics.As a consequence the parameterβl,which is defined as the weighted square average value of the periodicity of spectrum cureβbetween 2sand 10 s,is taken as the boundary parameter of ground motions.According to the results of statistical analysis of 178near-field records and 151far-field records,the ground motions are classified into long-period(βl0.4),moderate period(0.2≤βl≤0.4)and short period(βl0.2)ground motion.This will provide the basis for the analysis of long-period ground motions of flexible bridges." @default.
- W2381569641 created "2016-06-24" @default.
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- W2381569641 date "2014-01-01" @default.
- W2381569641 modified "2023-09-26" @default.
- W2381569641 title "The bounded method and characteristics analysis for long-period ground motions" @default.
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