Seismic Analysis of an Earth-Rock Dam on Thick Alluvial Deposit

Wei Jun Cen; Shuai Wang; Zhi Xiang Yang; Hui Sun

doi:10.4028/www.scientific.net/AMR.594-597.1811

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 594-597Seismic Analysis of an Earth-Rock Dam on Thick...

Seismic Analysis of an Earth-Rock Dam on Thick Alluvial Deposit

Abstract:

The nonlinear dynamic FEM was applied to analyze the dynamic response of a core-wall earth-rock dam on thick loess alluvial deposit. The dynamic responses of acceleration, dynamic displacement, permanent deformation and the liquefaction state of the dam were obtained. Meanwhile, both dynamic FEM limit equilibrium method and pseudo-static method were used to access the seismic resistance of dam slope stability. The results show that dynamic responses of acceleration and dynamic displacement are reasonable. The permanent deformation is mainly concentrated in the core wall. The downstream dam slope has enough seismic resistance stability. However, there will be big dynamic pore-water pressure in the dam foundation and the loess alluvial deposit will be liquefied during the earthquake. Therefore the resistance method of liquefaction should be adopted for the foundation.

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Periodical:

Advanced Materials Research (Volumes 594-597)

Pages:

1811-1815

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.594-597.1811

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Online since:

November 2012

Authors:

Wei Jun Cen*, Shuai Wang, Zhi Xiang Yang, Hui Sun

Keywords:

Dam Slope Stability, Earth-Rock Dam, Liquefaction, Nonlinear Dynamic FEM, Permanent Deformation, Thick Alluvial Deposit

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