HE Rui, QIN Quan. NEW METHODS FOR GENERATING HIGH QUALITY ACCELERATION TIME HISTORIES[J]. Engineering Mechanics, 2006, 23(8): 12-18.
Citation: HE Rui, QIN Quan. NEW METHODS FOR GENERATING HIGH QUALITY ACCELERATION TIME HISTORIES[J]. Engineering Mechanics, 2006, 23(8): 12-18.

NEW METHODS FOR GENERATING HIGH QUALITY ACCELERATION TIME HISTORIES

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  • Received Date: December 05, 2004
  • Revised Date: January 11, 2005
  • To generate high quality acceleration time histories for nonlinear seismic response analysis,two methods for adjusting accelerograms to be compatible with target response spectra are investigated.Short-time Fourier transform is used for time-frequency analysis of recorded accelerograms,and the inverse transform on adjusted Fourier spectra yields the adjusted time histories;the recorded accelerograms can also be adjusted by adding unit impulse response functions to be compatible with target response spectra.The two methods generate response-spectrum-compatible acceleration time histories quickly while maintaining the non-stationarity and durations of the original recorded accelerograms.Implementation of the proposed methods is discussed and a computer program ACOTAS was developed.Results of an example show that the methods give better acceleration time histories quickly.
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