Research Article
Dec 1974
Earthquake Finite Element Analysis of Structure-Foundation Systems
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VIEW THE REPLYAuthors: Ashok K. Vaish and Anil K. Chopra, M.ASCEAuthor Affiliations
Publication: Journal of the Engineering Mechanics Division
Volume 100, Issue 6
Abstract
An effective procedure for the earthquake analysis of linear structure-foundation systems, idealized as an assemblage of two-dimensional finite elements, is developed. The procedure utilizes a substructure approach. The foundation is analyzed first, independently of the structure, to obtain its frequency dependent compliance characteristics at the connection nodes with the structure. Equations of motion for the structure are then written in the frequency domain incorporating the effect of the foundation. The substructure approach allows a more detailed modeling of the structure, at the same time resulting in a greater flexibility in the selection of the analysis procedure for the foundation and a greater efficiency in numerical computation. The frequency dependent equations of motion for the structure are solved very efficiently by transformation to a generalized coordinate system (Ritz Method), where a few generalized shapes can adequately express the structural response.
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Published In
Journal of the Engineering Mechanics Division
Volume 100 • Issue 6 • December 1974
Pages: 1101 - 1116
Copyright
© 1974 American Society of Civil Engineers.
History
Published in print: Dec 1974
Published online: Feb 3, 2021
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Ashok K. Vaish
Supervising Engr., EDS Nuclear, Inc., San Francisco, Calif.; formerly Grad. Student, Univ. of California, Berkeley, Calif.
Anil K. Chopra, M.ASCE
Assoc. Prof., Dept. of Civ. Engrg., 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.