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Volume 45 Issue 9
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XUE Demin, LI Tianbin, ZHANG Shuai. Method for calculating landslide thrusts behind double-row piles based on displacement control[J]. Chinese Journal of Geotechnical Engineering, 2023, 45(9): 1979-1986. DOI: 10.11779/CJGE20220687
Citation: XUE Demin, LI Tianbin, ZHANG Shuai. Method for calculating landslide thrusts behind double-row piles based on displacement control[J]. Chinese Journal of Geotechnical Engineering, 2023, 45(9): 1979-1986. DOI: 10.11779/CJGE20220687
shu

Method for calculating landslide thrusts behind double-row piles based on displacement control

  • 1.

    State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China

  • 2.

    Zhejiang Institute of Communications, Hangzhou 311112, China

  • 3.

    Institute of Civil Engineering, Zhejiang University, Hangzhou 310058, China

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  • Received Date: May 29, 2022
  • Available Online: February 23, 2023
    Graphical Abstract
    • Abstract
  • In engineering practices, the transfer coefficient overload method in the limit state is generally used to obtain the landslide thrusts behind one-row piles, and then the landslide thrusts behind double-row piles are manually distributed, which is inconsistent with the actual bearing forces behind the front- and rear-row piles in the non-limit state. Based on the coordination of pile-soil deformation, considering the correlation between displacement and soil arching effects, combining with the Mohr's circular coordinate translation method and the inclined differential element method, a method for calculating the landslide thrusts behind double-row piles in non-limit state is established based on the vertical soil arching theory and the horizontal soil arching theory. Compared with the indoor centrifugal model test results, the theoretical and measured landslide thrusts behind the front-row piles compatible with the soil displacements of 7 mm and 21 mm are basically the same, and the error between the theoretical and measured landslide thrusts behind the rear-row piles are 1.08% and 6.42%, which shows the rationality and applicability of the proposed method to a certain extent. The proposed method may provide a theoretical basis for determining the landslide thrusts behind double-row piles compatible with any soil displacement.
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    • References (16)
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