Research Article
Apr 1968
Nonstationary Stochastic Models of Earthquake Motions
Publication: Journal of the Engineering Mechanics Division
Volume 94, Issue 2
Abstract
Eight strong-motion accelerograms recorded on firm ground and at moderate epicentral distances are studied for the purpose of developing a reasonable stochastic representation of the time history of ground accelerations during strong earthquakes. The results indicate that over durations which are of interest in structural response calculations, nonstationary random processes are needed for the description of the records. A nonstationary Gaussian filtered shot-noise process is examined for this purpose. The member functions of the mathematical model and their associated linear response spectra are compared with the corresponding information obtained from the recorded accelerograms. On this basis, a nonstationary Gaussian filtered shot-noise process with a second-order filter is proposed for stochastic simulation of strong-motion earthquakes.
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Published In
Journal of the Engineering Mechanics Division
Volume 94 • Issue 2 • April 1968
Pages: 559 - 584
Copyright
© 1968 American Society of Civil Engineers.
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Published in print: Apr 1968
Published online: Feb 3, 2021
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Mohammad Amin, AM.ASCE
Asst. Prof. of Civ. Engrg., Univ. of Illinois, Urbana, Ill.
Alfredo H.-S. Ang, AM.ASCE
Prof. of Civ. Engrg., Univ. of Illinois, Urbana, Ill.
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.