Research Article
Sep 1975
Dynamic Analysis of the Slide in the Lower San Fernando Dam during the Earthquake of February 9, 1971
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VIEW THE REPLYAuthors: H. Bolton Seed, M.ASCE, Izzat M. Idriss, M.ASCE, Kenneth L. Lee, M.ASCE, and Faiz I. Makdisi, AM.ASCEAuthor Affiliations
Publication: Journal of the Geotechnical Engineering Division
Volume 101, Issue 9
Abstract
During the San Fernando, California earthquake of February 9, l97l, a major slide occurred in the upstream slope of the Lower San Fernando Dam. Based on data obtained from tests on undisturbed samples, a detailed dynamic analysis of the seismic stability of the embankment is presented. It is concluded that an analysis procedure incorporating: (1) Consideration of the initial static stresses in the embankment: (2) the use of a dynamic finite element analysis procedure to determine the dynamic stresses induced in individual elements of the embankment by the earthquake; (3) the use of cyclic loading triaxial compression test data to determine the response of the soil elements to the induced stresses; and (4) consideration of progressive failure effects provides a satisfactory basis for assessing the stability of the embankment. This type of analysis indicates the development of a zone of liquefaction along the base of the upstream shell that would be sufficiently extensive near the end of the earthquake shaking to lead to a condition of instability.
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Published In
Journal of the Geotechnical Engineering Division
Volume 101 • Issue 9 • September 1975
Pages: 889 - 911
Copyright
© 1975 American Society of Civil Engineers.
History
Published in print: Sep 1975
Published online: Feb 10, 2021
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Authors
Affiliations
H. Bolton Seed, M.ASCE
Prof. of Civ. Engrg., Univ. of California, Berkeley, Calif
Izzat M. Idriss, M.ASCE
Assoc., Woodward-Lundgren & Assocs., Oakland, Calif., and Asst. Research Engr., Univ. of California, Berkeley, Calif
Kenneth L. Lee, M.ASCE
Assoc. Prof., School of Engrg. & Applied Sci., Univ. of California, Los Angeles, Calif
Faiz I. Makdisi, AM.ASCE
Grad. Research Asst., Dept. of Civ. Engrg., Univ. of California, Berkeley, Calif
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