Chapter
Apr 26, 2012
Time-Frequency Analysis and Artificial Adjustment of Earthquake Ground Motions via S-Transform
Authors: Jian Fan [email protected], Yuan Yong, and Yanping Zhang [email protected]Author Affiliations
Publication: Earth and Space 2010: Engineering, Science, Construction, and Operations in Challenging Environments
Abstract
In this paper, the basic algorithm of S-transform is presented, and the time varying amplitude spectrum and the time varying energy spectrum reflecting the time-frequency characteristics of the seismic records are defined. The time-frequency characteristics of Northridge wave, El-centro wave, Kobe wave and an artificial wave are analyzed through numerical example. Earthquake records can be adjusted with time-frequency filtering based on S-transform, and a new procedure is presented to generate an accelerograms whose power spectrum or response spectrum is compatible with a target spectrum by using actual earthquake records as parents.
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Published In
Earth and Space 2010: Engineering, Science, Construction, and Operations in Challenging Environments
Pages: 3101 - 3110
Copyright
© 2010 American Society of Civil Engineers.
History
Published online: Apr 26, 2012
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Authors
Affiliations
Department of civil Engineering, Huazhong Univ. of Sci. & Tech., P.O. Box 430074, Wuhan, China. E-mail: [email protected]
Yuan Yong
Department of civil Engineering, Huazhong Univ. of Sci. & Tech., P.O. Box 430074, Wuhan, China
School of Energy and Power Engineering, Huazhong Univ. of Sci. & Tech., P.O. Box 430074, Wuhan, China. E-mail: [email protected]
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