Research Article
Nov 1978
Site Dependent Earthquake Motions
Authors: Karl M. Romstad, John Bruce, and James R. HutchinsonAuthor Affiliations
Publication: Journal of the Geotechnical Engineering Division
Volume 104, Issue 11
Abstract
A statistical method for modeling time varying earthquake induced acceleration levels which will produce smooth response spectrums of the desired shape and amplitude levels is developed. Specific records are derived to simulate a mean spectrum developed from historically recorded rock motions and also for AEC Regulatory Guide spectrum. The synthetic rock motion is then used as the input motion to a number of site conditions simulating stiff, deep cohesionless and soft to medium clay and sand sites using the computer program SHAKE. The results are compared to mean spectra for similar sites derived from historically recorded motions and shown to provide reasonable engineering estimates of site motions.
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Published In
Journal of the Geotechnical Engineering Division
Volume 104 • Issue 11 • November 1978
Pages: 1389 - 1400
Copyright
© 1978 American Society of Civil Engineers.
History
Published in print: Nov 1978
Published online: Feb 11, 2021
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Authors
Affiliations
Karl M. Romstad
Prof. of Civ. Engrg., Univ. of California, Davis, Calif
John Bruce
Research Engr., Stanford Research Inst., Palo Alto, Calif
James R. Hutchinson
Prof. of Civ. Engrg., Univ. of California, Davis, Calif
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