Discussion on the structure layout of geo-membrane impervious rockfill dam

Computational modeling plays a significant role in the design of rockfill dams. Various constitutive soil parameters are used to design such models, which often involve high uncertainties due to the complex structure of rockfill dams comprising various zones of different soil parameters. This study performs an uncertainty analysis and a global sensitivity analysis to assess the effect of constitutive soil parameters on the behavior of a rockfill dam. A Finite Element code (Plaxis) is utilized for the structure analysis. A database of the computed displacements at inclinometers installed in the dam is generated and compared to in situ measurements. Surrogate models are significant tools for approximating the relationship between input soil parameters and displacements and thereby reducing the computational costs of parametric studies. Polynomial chaos expansion and deep neural networks are used to build surrogate models to compute the Sobol indices required to identify the impact of soil parameters on dam behavior.

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Evaluating the effects of reservoir level and foundation depth on the dynamic behaviour of a rockfill dam using three-dimensional finite elements modelling

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/779/1/012044 ◽

2021 ◽

Vol 779 (1) ◽

pp. 012044

Author(s):

Ameen Mohammed Salih Ameen ◽

Ali O. Al-Sulttani ◽

Basim A R Al-Bakri

Keyword(s):

Finite Elements ◽

Dynamic Behaviour ◽

Three Dimensional ◽

Reservoir Level ◽

Rockfill Dam ◽

Finite Elements Modelling

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Real-time compaction quality monitoring of high core rockfill dam

Science China Technological Sciences ◽

10.1007/s11431-011-4429-6 ◽

2011 ◽

Vol 54 (7) ◽

pp. 1906-1913 ◽

Cited By ~ 37

Author(s):

DengHua Zhong ◽

DongHai Liu ◽

Bo Cui

Keyword(s):

Real Time ◽

Quality Monitoring ◽

Rockfill Dam ◽

Core Rockfill Dam

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DISLOCATION OF FACE-SLABS OF ZIPINGPU CONCRETE FACE ROCKFILL DAM DURING WENCHUAN EARTHQUAKE

Journal of Earthquake and Tsunami ◽

10.1142/s1793431112500078 ◽

2012 ◽

Vol 06 (02) ◽

pp. 1250007 ◽

Cited By ~ 16

Author(s):

DEGAO ZOU ◽

YANG ZHOU ◽

HOE I. LING ◽

XIANJING KONG ◽

BIN XU

Keyword(s):

Wenchuan Earthquake ◽

Limit Equilibrium ◽

Failure Surface ◽

Ground Acceleration ◽

Factors Affecting ◽

2008 Wenchuan Earthquake ◽

Rockfill Dam ◽

Concrete Face ◽

Concrete Face Rockfill Dam ◽

Water Elevation

Zipingpu concrete face rockfill dam (CFRD) is one of the tallest dams that have ever been subjected to strong earthquake shaking and recorded damages. In this paper, finite element method and limit equilibrium method are used to determine the most critical failure surface for Zipingpu CFRD during the 2008 Wenchuan earthquake in China. The dislocation damage of the face-slab joint was then obtained from the sliding block analysis. The major factors affecting dislocation displacement of face-slabs were analyzed. The results showed that the rigid sliding block method is relevant for analyzing the damage of face-slabs of CFRD during earthquake. The peak ground acceleration had a significant influence on the dislocation. As the acceleration of the dam increases with the height while the strength of face-slab joints reduces, the dislocation could easily occur when the upstream slope of the dam started to slide. The water elevation had considerable impact on the dislocation of face-slabs during strong shaking. There might be no dislocation of face-slabs at full reservoir, and the water elevation just above construction joints would induce larger damage.

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