Nonlinear Hydrodynamic Pressure on Dams

The dynamic interaction between nonlinear hydrodynamic pressures and the vibration of a concrete gravity dam is analyzed by coupling Euler's equations with a finite element model of the dam. The earthquake force components in the horizontal and vertical directions are cast as the forcing functi...

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Bibliographic Details
Published in:Journal of engineering mechanics 1990-06, Vol.116 (6), p.1372-1391
Main Authors: Hung, Tin-Kan, Chen, Bang-Fuh
Format: Article
Language:English
Subjects:
Applied sciences
Buildings. Public works
Exact sciences and technology
Structural analysis. Stresses
TECHNICAL PAPERS
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Summary:The dynamic interaction between nonlinear hydrodynamic pressures and the vibration of a concrete gravity dam is analyzed by coupling Euler's equations with a finite element model of the dam. The earthquake force components in the horizontal and vertical directions are cast as the forcing functions in the finite difference equations for fluid motion. The results are compared with those associated with a rigid dam motion. The pressure distributions are very sensitive to dam vibration and surface wave. For El Centra ground motion recorded on October 15, 1979, the calculated rise of the water surface on Pine Flat Dam was 8 ft (2.7 m), indicating a strong nonlinear effect on hydrodynamic pressures and the potential hazards of surface waves in the reservoir.
ISSN:0733-9399
1943-7889
DOI:10.1061/(ASCE)0733-9399(1990)116:6(1372)