Deformation Control Method of the Antislide Pile under Trapezoidal Load in the Zhangjiawan Landslide

Wang, Hao; Lv, Zhiying; Qin, Hongyu; Yue, Jianwei; Zhang, Jianwei

doi:10.1155/2020/1405610

Cited by 7 publications

(4 citation statements)

References 34 publications

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“…The displacement of the stabilizing pile is the superposition of the load-bearing section and the anchoring section (Wang et al 2020c). Based on the boundary conditions at the top of pile, the final displacement is obtained in Eq.…”

Section: Equivalent Displacement Of Stabilizing Pilementioning

confidence: 99%

Analytical solution of seismic analysis of piled-reinforced slopes

Tao

Jia

Bian

et al. 2021

Bull Eng Geol Environ

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Stabilizing piles is a typical passive reinforcement measure that is widely used in slope and foundation excavation. In slope stability analysis, the force of a stabilizing pile is often taken as the fixed value. Obviously, this approach simplifies the impact of stabilized piles on the slope. Based on the passive effect of stabilizing piles, this study elaborates on the sliding mechanism of slopes under seismic conditions. To establish the relationship between the slope displacement and the force of the pile, a new method of equivalent displacement is proposed. The Newmark method and limit analysis are used to derive the formulas of slope displacement and safety factor. Through typical cases, different stabilizing pile models and the cumulative effect of multiple seismic loads are analyzed. In addition, the influence of various parameters on slope stability is discussed. The results show that (1) the stabilizing pile has an obvious passivity. The antisliding force is gradually released with the sliding and squeezing of the slope, showing the trend of increasing first and then stabilizing. (2) Under the condition of multiple seismic loads, the slope has a cumulative effect. If the passive effect of the pile is considered, the calculation result is more conservative. (3) The location of the pile and the length of the anchoring section have a more significant influence on the slope stability. Risk analysis based on displacement can be used in the design of reinforcement schemes.

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Section: Equivalent Displacement Of Stabilizing Pilementioning

confidence: 99%

Analytical solution of seismic analysis of piled-reinforced slopes

Tao

Jia

Bian

et al. 2021

Bull Eng Geol Environ

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“…In the structural design of the round pile, it is recommended to strengthen the steel bar at a position several times the diameter of the pile below the pile top so as to increase the horizontal bearing capacity. Wang [33,34] theoretically calculated that the maximum bending moment of the anti-slide pile was about 2 m under the sliding surface (1 times the pile width). This difference might be caused by the shape of the pile and stiffness of the rock under the sliding surface.…”

Section: Different Slope Gradients Affect the Internal Force And Dispmentioning

confidence: 99%

Model Test and Numerical Simulation of Single Pile Response under Combined Loading in Slope

Zhang

Wang

et al. 2020

Applied Sciences

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Vertical loads are commonly transferred by piles primarily in the upper structures. However, lateral loads are also significant compared with vertical loads in pile foundation design. Compared with a pile on level ground, there are many particular characteristics in a pile that is on sloping ground. These characteristics depend on the combined loading and the magnitude of the soil lateral displacement. In order to investigate the pile’s bearing characteristics, a model test was conducted and ABAQUS software was adopted to conduct 3D numerical simulation of a single pile with different slope angles under combined loads. The experimental results indicated that (1) the soil pressure along the slope direction was smaller than the other side, resulting in an asymmetry of the slope soil around the pile, and in turn introducing a horizontal thrust to the pile; (2) with the increase of slope angle, the horizontal thrust increased while the single pile’s bearing capacity decreased; (3) the vertical load caused more pile horizontal displacement with the growth of slope angle; and (4) the pile’s moment and the displacement also increased with the growth of the slope angle. The findings in this study can provide a useful reference in the design of piles or anti-slide piles in sloping ground.

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“…Note that all the above analyses focus on the impact of basement excavation beneath existing buildings on the bearing capacity and settlement of the original foundation piles. Wang et al 7 – 9 studied the deformation and internal force of pile.…”

Section: Introductionmentioning

confidence: 99%

Buckling stability analysis of underpinning piles during basement excavation beneath existing buildings

Shan

Yang

et al. 2022

Sci Rep

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In the present paper, the pile-soil system’s total potential energy equation of underpinning piles was established based on the Winkler elastic foundation beam theory. This energy equation was used to explore the effect of basement excavation beneath existing buildings on the underpinning pile’ buckling stability. Utilizing the minimum potential energy theory, the expression of the critical buckling load for underpinning piles’ stability during the excavation project was obtained. Moreover, the influencing factors of the critical buckling load were investigated. It was found that the underpinning pile’s critical load converged with the augment of half-wave number. Moreover, the pile skin friction and deadweight had an insignificant influence on it. In addition, the critical load of underpinning piles decreased sharply with the increasing excavation depth and gradually increased with the augment of pile diameter. The results of this study provides a basis for the design of adding piles in similar projects and reduces the hidden danger of excavation instability.

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Deformation Control Method of the Antislide Pile under Trapezoidal Load in the Zhangjiawan Landslide

Cited by 7 publications

References 34 publications

Analytical solution of seismic analysis of piled-reinforced slopes

Analytical solution of seismic analysis of piled-reinforced slopes

Model Test and Numerical Simulation of Single Pile Response under Combined Loading in Slope

Buckling stability analysis of underpinning piles during basement excavation beneath existing buildings

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