A New Multi-Objective Comprehensive Optimization Model for Homogeneous Slope Reinforced by Anti-Slide Piles: Insights from Numerical Simulation

Xu, Chao; Xue, Lei; Cui, Yuan; Guo, Songfeng; Zhai, Mengyang; Bu, Fengchang

doi:10.2113/2022/6499724

Cited by 3 publications

(2 citation statements)

References 36 publications

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“…Anchorage depth is also an important factor in the spatial arrangement of MPGs [42]. According to the design codes for CP (rigid pile), the anchorage length (A L ) needs to be 1/4-1/3 of the pile length (L).…”

Section: Performance Of Mpgs With Different Anchorage Lengthsmentioning

confidence: 99%

Cross-Scale Analysis on the Working Performance of Micropile Group and Talus Slope System

et al. 2023

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Micropile groups (MPGs), combined with the advantages of the anti-slip pile and anchor cable, offer an efficient support system that can be used as countermeasures for stabilizing the talus slopes. However, the performance of MPGs in stabilizing the talus slopes is rarely numerically investigated from the continuous-discontinuous viewpoints. To fulfil this knowledge gap, a numerical method coupled with the discrete element method (DEM) with the finite element method (FEM) is proposed first, and validated to be with good accuracy by the centrifuge model tests. A series of cross-scale analysis cases are then adopted to assess the behavior of MPG in the talus slopes, in which the influencing factors are also taken into account. The numerical results indicate that the MPGs reinforcement can significantly improve the stability of the talus slopes, avoiding the potential progressive shallow slip. For the MPGs with different pile spacing, the distribution laws of deformation and internal force are rather similar, but the one whose pile spacing is four times the pile diameter shows better performance. Moreover, the effective anchorage length of MPG is approximately 1/3 of the pile length, and the axial force distribution is influenced by the type of pile bottom constraint and the tangential contact between the micropile and the bedrock. Finally, the “bidirectional anchorage” attributed to the platform and the bedrock can greatly improve the performance of the MPG, which is a non-negligible part of the anti-slip mechanism of the MPG. This study is of great significance for facilitating the design of MPG in stabilizing the talus slopes.

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Section: Performance Of Mpgs With Different Anchorage Lengthsmentioning

confidence: 99%

Cross-Scale Analysis on the Working Performance of Micropile Group and Talus Slope System

et al. 2023

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“…The results show that fixed pile heads located in the middle of the slope provide better stability and reduce the optimum length of the piles. Xu, C. [21] et al proposed a new multiobjective comprehensive optimization method for the optimization problem of anti-slip pile reinforced slopes and analyzed the effects of pile position, pile length, and pile spacing on the reinforcing effect of homogeneous slopes through numerical simulation. A large number of scholars have conducted research in pile length optimization.…”

Section: Introductionmentioning

confidence: 99%

Study on the Optimization of Pile Length of Micropiles in Soil Landslides

Cheng,

Sui,

Wang

et al. 2023

Applied Sciences

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This study summarizes the engineering design and calculation methods of micropiles and proposes a pile length optimization model based on numerical simulation software. Based on the proposed micropile calculation method and optimization method, a specific analysis of a project example was carried out, and a series of calculations, such as micropile design calculation and pile length optimization for the project, was completed. The results show that the miniature pile length optimization model based on numerical simulation finite difference method improves the previous method by automating the optimization process through fast modeling, automatic creation of optimization commands, and output and analysis of optimization results, and realizes the optimization of pile length using numerical simulation, which improves the efficiency of the optimization of the pile length under the premise of guaranteeing accuracy, and achieves the unity of both efficiency and accuracy. The feasibility of this optimization process is proved by engineering examples. The engineering practicability of the micropile design calculation method and optimization method proposed in this study is proved through practice. It provides a reference value for the initial fast and flexible management of small landslides.

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Numerical Analysis of Surcharge Effect on Stability and Interaction Mechanism of Slope-Pile-Footing System

Xu,

Xue,

Cui

et al. 2024

J. Earth Sci.

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A New Multi-Objective Comprehensive Optimization Model for Homogeneous Slope Reinforced by Anti-Slide Piles: Insights from Numerical Simulation

Cited by 3 publications

References 36 publications

Cross-Scale Analysis on the Working Performance of Micropile Group and Talus Slope System

Cross-Scale Analysis on the Working Performance of Micropile Group and Talus Slope System

Study on the Optimization of Pile Length of Micropiles in Soil Landslides

Numerical Analysis of Surcharge Effect on Stability and Interaction Mechanism of Slope-Pile-Footing System

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