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Spectrum analysis of strong-motion earthquakes

Housner, G. W. and Martel, R. R. and Alford, J. L. (1953) Spectrum analysis of strong-motion earthquakes. Bulletin of the Seismological Society of America, 43 (2). pp. 97-119. ISSN 0037-1106.

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The problem of the dynamic response of a structure to earthquake ground motion has been formulated in a manner which permits separation of the characteristics of particular structures from the characteristics of the earthquake. The expression involving the characteristics of the earthquake is defined as the “spectrum” of the earthquake and it is shown that the spectrum is a plot of the maximum response of a simple oscillator versus the period of the oscillator. Eighty-eight such spectra were computed by means of an electric analog computer and are presented in this paper. It is found that damping is a very important parameter in the over-all problem; relatively small amounts of damping reduce the structural response sharply. Further research on damping in buildings is recommended, and it is also proposed that the spectrum be used as a quantitative measure of earthquake intensity.

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Additional Information:Copyright © 1953, by the Seismological Society of America. Manuscript received for publication March 8, 1952. The work described in this paper was done at the California Institute of Technology, under a contract with the Office of Naval Research. The accelerograms used in the study were especially prepared for this project by the U. S. Coast and Geodetic Survey.
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Office of Naval Research (ONR)UNSPECIFIED
Issue or Number:2
Record Number:CaltechAUTHORS:20140805-165113746
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:48032
Deposited By: George Porter
Deposited On:06 Aug 2014 15:36
Last Modified:03 Oct 2019 06:59

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