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Time-frequency analysis method of seismic responses of the horizontal layer field subjected to shear wave

TANG Yanli;YANG Changwei;School of Civil Engineering,Central South University;School of Civil Engineering,Southwest Jiaotong University;  
Based on the questions existing in the time domain and frequency domain analysis methods and the theory of elastic wave and the summarized horizontal field model,the new time frequency analysis method of seismic responses of the horizontal layer field is put forward by using the Hilbert-Huang transform.And the rationality of this method has been verified by the results of the shaking table test and the numerical simulation.This method not only considerate the time-frequency effects on the seismic responses of the layer field,but also can provide the valuable references for selecting the design parameters of the field and the time frequency seismic design of some structures.
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