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Volume 42 Issue 4
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WEI Kuang-min, CHEN Sheng-shui, LI Guo-ying, MI Zhan-kuan, FU Zhong-zhi. Application of displacement multi-point constraint refinement method in simulation of concrete-faced rockfill dams[J]. Chinese Journal of Geotechnical Engineering, 2020, 42(4): 616-623. DOI: 10.11779/CJGE202004003
Citation: WEI Kuang-min, CHEN Sheng-shui, LI Guo-ying, MI Zhan-kuan, FU Zhong-zhi. Application of displacement multi-point constraint refinement method in simulation of concrete-faced rockfill dams[J]. Chinese Journal of Geotechnical Engineering, 2020, 42(4): 616-623. DOI: 10.11779/CJGE202004003
shu

Application of displacement multi-point constraint refinement method in simulation of concrete-faced rockfill dams

  • 1.

    Geotechnical Engineering Dept., Nanjing Hydraulic Research Institute, Nanjing 210024, China

  • 2.

    Key Laboratory of Failure Mechanism and Safety Control Techniques of Earth-Rock Dam of the Ministry of Water Resources, Nanjing 210029, China

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  • Received Date: May 08, 2019
  • Available Online: December 07, 2022
    Graphical Abstract
    • Abstract
  • In the numerical simulation of a concrete-faced rockfill dam, to consider the accuracy and efficiency of calculation, the concrete slab can be simulated using fine mesh and the rockfill can be simulated using relatively coarse mesh. Therefore, the proper algorithm should be established between the slab and the rockfill for transferring the load and displacement. An algorithm to connect the fine mesh and the coarse mesh is developed based on the multi-point constraint method. It is used to simulate a 200 m-high concrete-faced rockfill dam under construction. By comparing the results of the traditional simulation and the current method, it is shown that the proposed method has good precision, and the deformation is continuous at the interface between the slab and the rockfill. Compared with the traditional simulation, the simulation based on the displacement multi-point constraint refinement method can describe the stress gradient in the slab, which can provide a technical basis for simulating the local damage of the concrete slab. The proposed method is practical and easy to implement numerically, and it has a good future for application.
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    • References (14)
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