Time-Variant Finite Element Reliability for Performance Degradation Assessment of Concrete Gravity Dam

The safety is first-class important event of the dam. The crash for the gravity dam usually causes due to slid, the slippery stable is a key problem of big dam. This paper checks the stability of one dam by rigid body limit equilibrium method and finite element technique. Rigid body limit equilibrium method is a kind of traditional stable analytical method, which is confirmed by factual engineering, the safe coefficient is always used to judge the big dam safety degree. The finite element technique is a method which is quickly developed in the calculator science and the basic theories of the rock soil mechanics. The paper compares the two methods and makes sure the fact that the finite element is more reasonable than rigid body limit equilibrium method for analyzing the stability of gravity dam.

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Three-Dimensional Finite Element Analysis for Concrete Gravity Dam of Shachang Reservoir

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.488-489.565 ◽

2014 ◽

Vol 488-489 ◽

pp. 565-568

Author(s):

Dong Yu Ji

Keyword(s):

Finite Element ◽

Process Analysis ◽

Three Dimensional ◽

Gravity Dam ◽

Construction Process ◽

Concrete Gravity Dam ◽

Distribution Law ◽

Element Analysis ◽

Operating Process ◽

Three Dimensional Finite Element

Through analyzing concrete gravity dam structures mechanical characteristics in construction process and operating process, this paper adopts finite element method to carry out structural analysis for concrete gravity dam of Shachang reservoir. Deducing distribution law of the dams stress and displacement in construction process and operating process. Analysis results show that, concrete gravity dam of Shachang reservoir is reasonable, it meets the requirements for design. The analysis results provide a certain reference for design and construction of concrete gravity dam structure.

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Finite Element Analysis of Dam Foundation Seepage Effect on Cutoff Wall Depth of Guxue Concrete Gravity Dam

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1073-1076.1729 ◽

2014 ◽

Vol 1073-1076 ◽

pp. 1729-1732

Author(s):

Nian Nian Xi ◽

Fu Guo Tong ◽

Gang Liu ◽

Tao Zhong

Keyword(s):

Finite Element ◽

Gravity Dam ◽

Seepage Discharge ◽

The Finite Element Method ◽

Concrete Gravity Dam ◽

Cutoff Wall ◽

Seepage Field ◽

Element Analysis ◽

Dam Foundation ◽

Numerical Result

This paper is committed to analyze the results of numerical simulation in the dam foundation seepage field of Guxue concrete gravity dam with the finite element method. The results show that the cutoff wall depth of the Guxue dam foundation seriously impacts the seepage effect of cutoff wall. The cutoff wall initially becomes deeper, the reduction of seepage discharge is distinct to reach 24%, as the depth increases gradually, the seepage discharge reduces slowly and can only reach 7%. In a word, the cutoff wall depth of Guxue concrete gravity dam exists a reasonable value and the numerical result is15m in this paper.

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