DEM Study of the Three Dimensional Effect of Soil Arching in Piled-Embankments

Ma, Yiyue; Lü, Xilin; Huang, Maosong

doi:10.1007/978-3-319-95753-1_4

Cited by 5 publications

(6 citation statements)

References 20 publications

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“…Comparing the maximum pressures on the movable beams shows that the soil pressures did not increase with the backfill height but stopped increasing after reaching a particular limiting value, similar to the "grain bin effect" [49]. Two evaluation parameters (load transfer efficacy [31,50] and stress concentration ratio [20,51]) are introduced to evaluate the evolution and load transfer of soil arching. Two evaluation parameters (load transfer efficacy [31,50] and stress concentration ratio [20,51]) are introduced to evaluate the evolution and load transfer of soil arching.…”

Section: Determination Of Backfill Heightmentioning

confidence: 99%

“…Two evaluation parameters (load transfer efficacy [31,50] and stress concentration ratio [20,51]) are introduced to evaluate the evolution and load transfer of soil arching. Two evaluation parameters (load transfer efficacy [31,50] and stress concentration ratio [20,51]) are introduced to evaluate the evolution and load transfer of soil arching.…”

Section: Determination Of Backfill Heightmentioning

confidence: 99%

“…Sadrekarimi and Abbasnejad [30] determined the critical relative density (28%) for soil arching using concentric circular trapdoor tests with different diameters. Ma et al [31] simulated the evolution of soil arching at different fill heights and used the load transfer efficacy to evaluate the structural development. They found that the load transfer efficacy and displacement of soil arching at stabilization increased with the backfill height.…”

Section: Introductionmentioning

confidence: 99%

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Passive Soil Arching Effect in Aeolian Sand Backfills for Grillage Foundation

Zhang,

Liu,

Tian

et al. 2023

Sensors

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The passive soil arching effect exists in many soil–grille interaction systems. Increasing mental grillage foundations are used for transmission lines in aeolian sand areas; thus, exploring the evolution mechanism of passive soil arching is crucial. This study investigates the evolution and influencing factors of passive soil arching through a series of tests using a trapdoor device and particle image velocimetry (PIV). The test results show that the evolution of the arching structure causes the aeolian sand deformation to gradually extend to the backfill surface and stationary zone, generating two triangular arching surfaces between the movable beams and sliding surface at the junction of the active and stationary zones. Cracks in the arching and sliding surfaces were connected to form a W-shaped shear band. The development of the soil pressure was divided into four arching structure stages. The different stages of the inner and outer arches of the bearing characteristics had strong differences. Taking the appearance of the first arch surface as the time point, the soil pressure changes abruptly and the inner and outer arches alternate to bear the as a major role. The beam spacing significantly affected the arching evolution. A smaller beam spacing formed an initial bending configuration with an inconspicuous arching structure and incomplete shear band. As the beam spacing increased, the arching shape changed from triangular to parabolic, sudden changes in the soil pressure were more pronounced, and the arch height increased. The relative density and water content had little impact on the arch shape and shear zone but significantly affected the arching strength, soil pressure transfer, and arching height. The medium and high relative densities and low water contents resulted in a stronger arching structure and greater arching height, while low relative densities and high water contents weakened the soil pressure transfer. The range values for the optimum beam spacing, relative density, and water contents are given based on the variation characteristics of the evaluated parameters (E, n) under different conditions.

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Section: Determination Of Backfill Heightmentioning

confidence: 99%

Section: Determination Of Backfill Heightmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Passive Soil Arching Effect in Aeolian Sand Backfills for Grillage Foundation

Zhang,

Liu,

Tian

et al. 2023

Sensors

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“…Chevalier and Otani [22] presented experimental and numerical studies of the Trapdoor problem in 3D with rectangular Trapdoor. Ma and Huang [23] study the 3D effect of soil arching effect in piled-embankments by discrete element simulation.…”

Section: Introductionmentioning

confidence: 99%

Three-Dimensional Theoretical Model for Soil Arching with Inclined Slip Surfaces

Chen¹,

Liang²,

Xu³

et al. 2022

Preprint

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Terzaghi proposed two-dimensional (2D) arching theory through trapdoor tests based on the assumption of a vertical slip surfaces. However, the original 2D assumption is different from a real three-dimensional (3D) excavation condition and an actual slip surfaces caused by downward movement of a trapdoor is an inclined surface. Therefore, a 3D theoretical model was proposed in this study considering inclined slip surfaces. Horizontal thin layer differential element method was used to obtain the loosening soil pressure. Using the 3D theoretical model, the effects of buried depth ratio of loose area, length of loose area, soil parameters, and lateral earth pressure coefficient were investigated. The loosening earth pressure was highly affected by inclination angle of slip surface, buried depth ratio and length of loose area. Neglecting the inclined slip surface will underestimate the value of the loosening earth pressure, which will lead to the insecurity of the design. Loosening earth pressure calculated by this study was also compared with trapdoor tests. Results from this study was in good agreement with the experimental results. Compared with the traditional 2D solution, results from this study can more accurately analyze the soil arching effect in 3D excavation cases.

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“…Chevalier and Otani [22] presented experimental and numerical studies of the trapdoor problem in 3D with a rectangular trapdoor. Ma and Huang [23] studied the 3D effect of soil arching in piled embankments by discrete element simulation.…”

Section: Introductionmentioning

confidence: 99%

Three-Dimensional Theoretical Model for Soil Arching with Inclined Slip Surfaces

Chen

Liang

et al. 2022

Applied Sciences

View full text Add to dashboard Cite

Terzaghi proposed two-dimensional (2D) arching theory through trapdoor tests based on the assumption of a vertical slip surfaces. However, the original 2D assumption is different from a real three-dimensional (3D) excavation condition and actual slip surfaces caused by the downward movement of a trapdoor are inclined surfaces. Therefore, a 3D theoretical model was proposed in this study considering inclined slip surfaces. Horizontal thin-layer differential element method was used to obtain the loosening soil pressure. Using the 3D theoretical model, the effects of the buried depth ratio of loose area, length of loose area, soil parameters, and lateral earth pressure coefficient were investigated. The loosening earth pressure was highly affected by inclination angle of slip surface, buried depth ratio and length of loose area. Neglecting the inclined slip surface will underestimate the value of the loosening earth pressure, which will lead to the insecurity of the design. Loosening earth pressure calculated by this study was also compared with trapdoor tests. Results from this study was in good agreement with the experimental results. Compared with the traditional 2D solution, results from this study can more accurately analyze the soil arching effect in 3D excavation cases.

show abstract

DEM Study of the Three Dimensional Effect of Soil Arching in Piled-Embankments

Cited by 5 publications

References 20 publications

Passive Soil Arching Effect in Aeolian Sand Backfills for Grillage Foundation

Passive Soil Arching Effect in Aeolian Sand Backfills for Grillage Foundation

Three-Dimensional Theoretical Model for Soil Arching with Inclined Slip Surfaces

Three-Dimensional Theoretical Model for Soil Arching with Inclined Slip Surfaces

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