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    Volume 47 Issue 12
    Dec.  2022
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    Article Navigation >  Earth Science  > 2022  >  47(12): 4362-4372
    Chen Jianfeng, Du Changcheng, Chen Sixian, Shi Zhenming, Peng Ming, 2022. Mechanical Mechanism of Slopes Stabilized with Anti-Slide Piles and Prestressed Anchor Cable Frame Beams under Seismic Loading. Earth Science, 47(12): 4362-4372. doi: 10.3799/dqkx.2022.325
    Citation: Chen Jianfeng, Du Changcheng, Chen Sixian, Shi Zhenming, Peng Ming, 2022. Mechanical Mechanism of Slopes Stabilized with Anti-Slide Piles and Prestressed Anchor Cable Frame Beams under Seismic Loading. Earth Science, 47(12): 4362-4372. doi: 10.3799/dqkx.2022.325
    shu

    Mechanical Mechanism of Slopes Stabilized with Anti-Slide Piles and Prestressed Anchor Cable Frame Beams under Seismic Loading

    doi: 10.3799/dqkx.2022.325
    • 1.

      Department of Geotechnical Engineering, College of Civil Engineering, Tongji University, Shanghai 200092, China

    • 2.

      Fuzhou Planning & Design Research Institute Group Co., Ltd., Fuzhou 350108, China

    • Received Date: 2022-06-01
      Available Online: 2023-01-10
    • Publish Date: 2022-12-25
      Abstract

    • A numerical model of a landslide stabilized with anti-slide piles and anchor cable frame beams was developed using a three-dimensional finite element program MIDAS/GTS. The factor of safety of the reinforced slope was calculated using the displacement time curve method. The acceleration responses, structural internal forces, and load-sharing rules were analyzed by inputting Wolong seismic waves with different peak ground accelerations(PGA). The results show that the factor of safety of the reinforced slope satisfies the code requirements. A potential shallow slip surface exists in the upper part of the slope, and a potential deep slip surface exists in the middle and lower parts of the slope under the earthquake action. The acceleration of the reinforced slope under seismic loading shows an elevation amplification effect. As the PGA of the input seismic wave increases, the amplification effect is enhanced. The bending moments and shear forces of the anti-slip pile increase when the PGA of the input seismic wave increases. The maximum positive and negative bending moments of the anti-slip pile are located at about 0.7 L(pile length) and 0.4 L from the top of the pile, respectively. The maximum positive and negative shear forces are located at about 0.9 L and 0.7 L from the top of the pile, respectively. When the PGA increases, the load sheared by piles and anchor cables increases gradually. However, the proportion of thrust shared by anti-slip piles increases while the proportion of thrust shared by anchor cables decreases. Thus, the variation of the proportion of thrust shared by anti-slip piles and anchor cables is recommended to be considered in engineering projects.

       

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