Two-phase elasto-plastic seismic response of earth dams: applications

To solve the problem of sediments on seismic response of concrete dams, pressure wave formula of saturated porous fluid-solid two-phase medium was derived from the Biots consolidation theory, and was determined the seismic response magnitude of sediment on concrete dam. Sediment was regarded as elastic-plasticity. And the method was applied to analyze the influence of sediments density, cohesion and friction angle on dam seismic response. Finally, a typical example is analyzed. The result shows sediments plasticity is relatively obvious on dam seismic response.

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Seismic response of earth dams: some recent developments

Soil Dynamics and Earthquake Engineering ◽

10.1016/0267-7261(87)90008-x ◽

1987 ◽

Vol 6 (1) ◽

pp. 2-47 ◽

Cited By ~ 148

Author(s):

George Gazetas

Keyword(s):

Seismic Response ◽

Earth Dams ◽

Recent Developments

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Elasto-plastic seismic response of 3-D earth dams: Application

International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts ◽

10.1016/0148-9062(88)92637-x ◽

1988 ◽

Vol 25 (3) ◽

pp. 145

Keyword(s):

Seismic Response ◽

Earth Dams

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Seismic Response of Dam-Sediment-Water on Fluid-Solid Coupling

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.353-356.2645 ◽

2013 ◽

Vol 353-356 ◽

pp. 2645-2651

Author(s):

Yi Zhi Yan ◽

Chang Xin Xiong ◽

Zhi Min Su

Keyword(s):

Porous Medium ◽

Seismic Response ◽

Compressible Fluid ◽

Water Reservoir ◽

Elastic Solid ◽

Hydrodynamic Pressure ◽

Calculation Model ◽

Sediment Thickness ◽

Two Phase ◽

Model Based

Studying the important effects of sediments on the seismic response of dams ,This paper established the calculation model based on regarding the water reservoir as compressible fluid ,the dam and the foundation as an elastic solid, the sediment as Liquid-Solid two-phase porous medium. The results showed that the sediment thickness and properties have important effects on the dam seismic. Increasing the thickness of sediment ,the seismic response of acceleration significantly decreased, the hydrodynamic pressure significantly reduced , which is benefited to the safety of the dam.

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