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Summary of Earthquake Response of Concrete Gravity Dams Including Hydrodynamic and Foundation Interaction Effects by Anil K. Chopra PDF
A general procedure for analysis of the response of concrete gravity dams, including the dynamic effects of impounded water and flexible foundation rock, to the transverse (horizontal) and vertical components of earthquake ground motion is presented. The problem is reduced to one in two dimensions, considering the transverse vibration of a monolith of the dam. The system is analyzed under the assumption of linear behavior for the concrete, foundation rock and water. The complete system is considered as composed of three substructures -- the dam, represented as a finite element system, the fluid domain, as a continuum of infinite length in the upstream direction, and the foundation rock region as a viscoelastic halfplane. The structural displacements of the dam are expressed as a linear combination of Ritz vectors, chosen as normal modes of an associated undamped dam-foundation system. The effectiveness of this analytical formulation lies in its being able to produce excellent results by considering only a few Ritz vectors. The modal displacements due to earthquake motion are computed by synthesizing their complex frequency responses using Fast Fourier Transform procedures. The stress responses are calculated from the modal displacements. An example analysis is presented to illustrate results obtained from this analytical procedure. Computation times for several analyses are presented to illustrate effectiveness of the procedure.
Detail About Earthquake Response of Concrete Gravity Dams Including Hydrodynamic and Foundation Interaction Effects PDF
- Author : Anil K. Chopra
- Publisher : Anonim
- Genre : Concrete dams
- Total Pages : 216 pages
- ISBN :
- Release Date : 03 June 1980
- PDF File Size : 9,9 Mb
- Language : English
- Rating : 4/5 from 21 reviews
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