A New Dam Reliability Analysis Considering Fluid Structure Interaction

Zhu, Xiaobin; Wang, Xiaoling; Xiao, Li; Liu, Minghui; Cheng, Zhi

doi:10.1007/s00603-017-1369-x

Cited by 8 publications

(9 citation statements)

References 37 publications

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“…State indicators characterize the situation of the seepage safety at a specific time and are the main criteria for the safety assessment. In researches on the seepage problems of concrete gravity dams [8][9][10][11][12][13][14][15][16], the seepage behavior is usually reflected by seepage flow and dam foundation uplift pressure. Therefore, seepage flow (C3) and uplift pressure (C4) are regarded as state indicators.…”

Section: Indicator System Based On the Psr Frameworkmentioning

confidence: 99%

“…In addition, relevant scholars have also conducted many researches on the seepage problems of concrete gravity dams. For example, Cheng [8] simulated the complex seepage field of a concrete gravity dam foundation based on the computational fluid dynamics (CFD) method, Zhu [14] proposed a fluid structure interaction (FSI) stochastic finite element approach to consider the influence of seepage on the reliability analysis of concrete gravity dam, and Jiang [15] employed a comprehensive investigation method to analyze the leakage problem of a concrete gravity dam with penetrating cracks. A new statistical model optimized with quantum genetic algorithm was utilized in Zhu's paper [16] to predict the concrete gravity dam's foundation uplift pressure under the function of highly influential typhoon.…”

Section: Introductionmentioning

confidence: 99%

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Seepage Safety Assessment of Concrete Gravity Dam Based on Matter-Element Extension Model and FDA

Wang

et al. 2019

Energies

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As an important infrastructure project, the concrete gravity dam plays an extremely important role in hydropower generation, irrigation, flood control, and other aspects. Seepage is an important factor affecting the stability of concrete gravity dams. Seepage safety assessment is of great significance to the safe operation of the dams. However, the existing seepage safety assessment models are not dynamic, and the correlation among indicators is often neglected and the overall seepage safety of the concrete gravity dams has not been considered. To solve these problems, this research proposes a dynamic matter-element extension (D-MEE) model. First, the D-MEE model is established through adroit integration of the matter-element extension (MEE) model and functional data analysis (FDA). Second, a dynamic criteria importance through the intercriteria correlation (D-CRITIC) method that can effectively consider the correlation among indicators is proposed to determine the weights. Third, the influence of different dam blocks on the overall seepage safety status is considered by constructing a spatial weight matrix. Finally, the proposed method is applied to the concrete gravity dam X in southwest China. The results show that the proposed method is effective and superior to the existing evaluation methods of seepage safety.

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Section: Indicator System Based On the Psr Frameworkmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Seepage Safety Assessment of Concrete Gravity Dam Based on Matter-Element Extension Model and FDA

Wang

et al. 2019

Energies

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“…(2019) conducted probabilistic analysis of pore water pressures of an Earth dam using a random finite element approach based on field data. Zhu et al. (2018) investigated the negative effect of seepage randomness on stability reliability of a gravity dam in operation with karst foundation using stochastic finite element approach.…”

Section: Introductionmentioning

confidence: 99%

“…In contrast, numerical simulation methods, such as finite element method (FEM) (e.g. Zhong et al, 2018;Sow et al, 2017;Ganji and Alembagheri, 2018;Zhu et al, 2018;Zhou et al, 2008;Liu et al, 2003), discrete element method (DEM) (e.g. Shi et al, 2017;Farinha et al, 2017), interface stress element method (ISEM) (Zhang et al, 2012), discontinuous deformation analysis (DDA) , block element method (BEM) (Chen et al, 2004) and finite difference method (FDM) (e.g.…”

Section: Introductionmentioning

confidence: 99%

“…Mouyeaux et al (2019) conducted probabilistic analysis of pore water pressures of an Earth dam using a random finite element approach based on field data. Zhu et al (2018) investigated the negative effect of seepage randomness on stability reliability of a gravity dam in operation with karst foundation using stochastic finite element approach. Wang and Ma (2017) presented a reliability analysis method based on the combination of the first-order reliability method and hybrid particle swarm optimization for stability reliability analysis of a gravity dam on complicated rock foundation.…”

Section: Introductionmentioning

confidence: 99%

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System reliability analysis of foundation stability of gravity dams considering anisotropic seepage and multiple sliding surfaces

Yang²,

Wu³

2022

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PurposeFor gravity dams built on foundations with directional joint sets, the seepage in the foundation possesses anisotropic characteristics and may have adverse effects on the foundation stability. A methodology for system reliability analysis of gravity dam foundations considering anisotropic seepage and multiple sliding surfaces is proposed in this paper.Design/methodology/approachAnisotropic seepages in dam foundations are simulated using finite element method (FEM) with the equivalent continuum model (ECM), and their effect on dam foundation stability is involved by uplift pressures acting on the potential sliding surfaces. The system failure probability of the dam foundation is efficiently estimated using Monte Carlo method (MCM) combined with response surface method (RSM).FindingsThe case study shows that it is necessary to consider the possibly adverse effect of anisotropic seepage on foundation stability of gravity dams and the deterministic analysis of the foundation stability may be misleading. The system reliability analysis of the dam foundation is justified, as the uncertainties in shear strength parameters of the foundation rocks and joint sets as well as aperture, connectivity and spacing of the joint sets are quantified and the system effect of the multiple potential sliding surfaces on the foundation reliability is reasonably considered.Originality/value(1) A methodology is proposed for efficient system reliability analysis of foundation stability of gravity dams considering anisotropic seepage and multiple sliding surfaces (2) The influence of anisotropic seepage on the stability of gravity dam foundation is revealed (3) The influence of estimation errors of RSMs on the system reliability assessment of dam foundation is investigated.

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Reliability-based optimum design of hydraulic water retaining structure constructed on heterogeneous porous media: utilizing stochastic ensemble surrogate model-based linked simulation optimization model

Al-Juboori

Datta

2019

Life Cycle Reliab Saf Eng

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A New Dam Reliability Analysis Considering Fluid Structure Interaction

Cited by 8 publications

References 37 publications

Seepage Safety Assessment of Concrete Gravity Dam Based on Matter-Element Extension Model and FDA

Seepage Safety Assessment of Concrete Gravity Dam Based on Matter-Element Extension Model and FDA

System reliability analysis of foundation stability of gravity dams considering anisotropic seepage and multiple sliding surfaces

Reliability-based optimum design of hydraulic water retaining structure constructed on heterogeneous porous media: utilizing stochastic ensemble surrogate model-based linked simulation optimization model

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