闫玉平, 肖世国. 2020: 后排桩沉埋深度与刚度对双排桩后侧滑坡推力的影响. 工程地质学报, 28(S1): 96-101. DOI: 10.13544/j.cnki.jeg.2020-356
    引用本文: 闫玉平, 肖世国. 2020: 后排桩沉埋深度与刚度对双排桩后侧滑坡推力的影响. 工程地质学报, 28(S1): 96-101. DOI: 10.13544/j.cnki.jeg.2020-356
    YAN Yuping, XIAO Shiguo. 2020: THE INFLUENCE OF EMBEDDED DEPTH AND STIFFNESS OF THE REAR-PILES ON THE LANDSLIDE THRUST BEHIND THE DOUBLE-ROW PILES. JOURNAL OF ENGINEERING GEOLOGY, 28(S1): 96-101. DOI: 10.13544/j.cnki.jeg.2020-356
    Citation: YAN Yuping, XIAO Shiguo. 2020: THE INFLUENCE OF EMBEDDED DEPTH AND STIFFNESS OF THE REAR-PILES ON THE LANDSLIDE THRUST BEHIND THE DOUBLE-ROW PILES. JOURNAL OF ENGINEERING GEOLOGY, 28(S1): 96-101. DOI: 10.13544/j.cnki.jeg.2020-356

    后排桩沉埋深度与刚度对双排桩后侧滑坡推力的影响

    THE INFLUENCE OF EMBEDDED DEPTH AND STIFFNESS OF THE REAR-PILES ON THE LANDSLIDE THRUST BEHIND THE DOUBLE-ROW PILES

    • 摘要: 针对后排沉埋式与前排全长式的双排桩加固的基岩-覆盖层式滑坡,依托西南地区一滑坡实例,利用Flac3D软件进行三维数值模拟,讨论了后排桩沉埋深度、截面尺寸、弹性模量等因素对双排桩后侧滑坡推力的影响规律。分析结果表明,后、前排桩后侧推力随着沉埋深度的增大有不同的变化特征,前者近似线性减小,后者略微增大;截面尺寸变化对后排桩自身推力影响较大,但对前排桩上推力影响较小;弹性模量对后排桩自身及前排桩上推力的影响都很小;这3个因素对后、前排桩上滑坡推力分布模式影响较小。

       

      Abstract: For the bedrock-talus landslides, we used the Flac3D software to discuss the influence of the factors such as the embedded depth, sectional dimension and elastic modulus of the rear-piles on the thrust of the landslide behind the double-row piles, and finally give some practical suggestions for the design of the double-row piles. The analysis showed that the above three factors do not change the thrust distribution pattern on the fore and rear piles. The thrust behind the rear-piles decrease linearly with the increase of the embedded depth of the pile top while the thrust behind the fore-piles increase slightly. The sectional dimension of the rear-piles have great influence on the thrust of themselves but little influence on the thrust of the fore-piles. The elastic modulus of the rear-piles have little influence on the thrust of themselves and the fore-piles.

       

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