Research Article
Apr 1966
Earthquake Stress Analysis in Earth Dams
Authors: Ray W. Clough, F.ASCE, and Anil K. ChopraAuthor Affiliations
Publication: Journal of the Engineering Mechanics Division
Volume 92, Issue 2
Abstract
The finite element method, which has been used extensively in the static analysis of elastic continua, is extended to the dynamic analysis of two-dimensional stress systems. The method involves calculation of vibration mode shapes and frequencies, making use of a stiffness matrix evaluated by the finite element method and a mass matrix formed by lumping the mass at the finite element nodal points. The dynamic response is then calculated by the mode-superposition method, the response of each mode being obtained by step-by-step integration. The method is demonstrated by the earthquake analysis of a triangular earth-dam cross section treated as an elastic plane-strain problem. Vertical and horizontal acceleration components of the 1940 El Centro earthquake are applied; results are presented in the form of plots showing the time history of stresses at selected points in the cross section and also plots of stress contours at selected instants of time.
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Published In
Journal of the Engineering Mechanics Division
Volume 92 • Issue 2 • April 1966
Pages: 197 - 211
Copyright
© 1966 American Society of Civil Engineers.
History
Published in print: Apr 1966
Published online: Feb 3, 2021
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Authors
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Ray W. Clough, F.ASCE
Prof. of Civ. Engrg., Univ. of California, Berkeley, Calif.
Anil K. Chopra
Graduate Student, Univ. of California, Berkeley, Calif.
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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.