Centrifugal model tests on deformation behavior of contact clay of ultra-high core dams

CHENG Rui-lin; MU Hong-you; GU Xing-wen; REN Guo-feng; WANG Nian-xiang

doi:10.11779/CJGE2022S2009

Volume 44 Issue S2

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Chinese Journal of Geotechnical Engineering > 2022 > 44(S2): 40-44. > DOI: 10.11779/CJGE2022S2009

CHENG Rui-lin, MU Hong-you, GU Xing-wen, REN Guo-feng, WANG Nian-xiang. Centrifugal model tests on deformation behavior of contact clay of ultra-high core dams[J]. Chinese Journal of Geotechnical Engineering, 2022, 44(S2): 40-44. DOI: 10.11779/CJGE2022S2009

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Centrifugal model tests on deformation behavior of contact clay of ultra-high core dams

CHENG Rui-lin^{1, 2,},
MU Hong-you¹,
GU Xing-wen^{3, 4, ,},
REN Guo-feng^{3, 4},
WANG Nian-xiang^{3, 4}

1.
PowerChina Guiyang Engineering Corporation Limited, Guiyang 550081, China
2.
School of Water Resources and hydropower, Wuhan University, Wuhan 430072, China
3.
Geotechnical Engineering Department, Nanjing Hydraulic Research Institute, Nanjing 210024, China
4.
State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Nanjing 210029, China

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Received Date: December 05, 2022
Available Online: March 26, 2023

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Abstract

Abstract

In order to study the deformation behavior of contact clay of an ultra-high core dam, 4 groups of centrifugal model tests are carried out. The results show that the differential deformations among the contact clay, bank and core wall are acceptable, and no separation are observed at contact parts. The deformations of the contact clay caused by vertical loads include the compression deformations vertical to the bank and the shear ones parallel to the bank. The contact clay is in the compression-shear state. The compression and shear deformations both increase with the loads in a log-linear trend. This trend is greater at steeper bank slope. The deformation development of the contact clay gradually becomes stable after construction.
- ultra-high core dam,
- contact clay,
- deformation behavior,
- centrifugal model test,
- deformation compatibility

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