Simplified Dynamic Analysis for Gravity Dams
Publication: Journal of Structural Engineering
Volume 120, Issue 9
Abstract
The effect of monolith interaction on the overall dynamic response of concrete gravity dams is investigated. For this purpose, a simplified approach is proposed that is capable of including the effect of the longitudinal direction on the response of the critical monolith. The monoliths are represented by beam elements connected by shear links. The effect of hydrodynamic interaction is considered as added mass to the dam structure. The results of this innovative approach are compared to those of a typical three‐dimensional analysis and good accuracy is obtained. It is noted that the fundamental frequency of dams with keyed contraction joints increases when monolith interaction is included. The structure tends to be stiffer and, depending on the input ground motion, may have lower response values than those predicted using typical two‐dimensional analysis. The procedure developed in this study has its limitations but can include the longitudinal effects along the axis of the dam in the response analysis efficiently and fairly accurately.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 120 • Issue 9 • September 1994
Pages: 2697 - 2716
Copyright
Copyright © 1994 American Society of Civil Engineers.
History
Received: Nov 11, 1992
Published online: Sep 1, 1994
Published in print: Sep 1994
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