Seepage and stress analysis of anti-seepage structures constructed with different concrete materials in an RCC gravity dam

Ming-chao Li; Xin-yu Guo; Jonathan Shi; Ze-biao Zhu

doi:10.1016/j.wse.2015.10.001

Volume 8 Issue 4

Oct. 2015

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Article Navigation > Water Science and Engineering > 2015 > 8(4): 326-334

Ming-chao Li, Xin-yu Guo, Jonathan Shi, Ze-biao Zhu. 2015: Seepage and stress analysis of anti-seepage structures constructed with different concrete materials in an RCC gravity dam. Water Science and Engineering, 8(4): 326-334. doi: 10.1016/j.wse.2015.10.001

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Ming-chao Li, Xin-yu Guo, Jonathan Shi, Ze-biao Zhu. 2015: Seepage and stress analysis of anti-seepage structures constructed with different concrete materials in an RCC gravity dam. Water Science and Engineering, 8(4): 326-334. doi: 10.1016/j.wse.2015.10.001

Citation:

Ming-chao Li, Xin-yu Guo, Jonathan Shi, Ze-biao Zhu. 2015: Seepage and stress analysis of anti-seepage structures constructed with different concrete materials in an RCC gravity dam. Water Science and Engineering, 8(4): 326-334. doi: 10.1016/j.wse.2015.10.001

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Seepage and stress analysis of anti-seepage structures constructed with different concrete materials in an RCC gravity dam

doi: 10.1016/j.wse.2015.10.001

a State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300072, PR China
b College of Engineering, Louisiana State University, Baton Rouge, LA 70803, USA.

Funds: This work was supported by and the National Basic Research Program of China (Grant No. 2013CB035903) and the National Natural Science Foundation of China (Grants No.51321065 and 51209159).

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Corresponding author: Ming-chao Li
Received Date: 2014-12-09
Rev Recd Date: 2015-08-08

Abstract

Abstract

This study used the finite element method (FEM) to analyze the stress field and seepage field of a roller-compacted concrete (RCC) dam, with an upstream impervious layer constructed with different types of concrete materials, including three-graded RCC, two-graded RCC, conventional vibrated concrete (CVC), and grout-enriched vibrated RCC (GEVR), corresponding to the design schemes S1 through S4. It also evaluated the anti-seepage performance of the imperious layer in the four design schemes under the normal water level and flood-check level. Stress field analysis of a retaining section and discharge section shows that the maximum tensile stress occurs near the dam heel, the maximum compressive stress occurs near the dam toe, and the stress distributions in the four schemes can satisfy the stress control criteria. Seepage field analysis shows that the uplift pressure heads in schemes S3 and S4 descend rapidly in the anti-seepage region, and that the calculated results of daily seepage flow under the steady seepage condition in these two schemes are about 30% to 50% lower than those in the other two schemes, demonstrating that CVC and GEVR show better anti-seepage performance. The results provide essential parameters such as the uplift pressure head and seepage flow for physical model tests and anti-seepage structure selection in RCC dams.
- RCC gravity dam,
- concrete partition,
- impervious layer,
- FEM,
- seepage field,
- stress field

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References(27)

References

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Seepage and stress analysis of anti-seepage structures constructed with different concrete materials in an RCC gravity dam

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Seepage and stress analysis of anti-seepage structures constructed with different concrete materials in an RCC gravity dam

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