Estimation of earth pressure against retaining walls with different limited displacement modes based on elastic theory

Le, Zhang; Dang, Faning; Wang, Xu; Ding, Jiulong; Gao, Jun; Zhang, Yu

doi:10.1007/s11629-021-6844-x

Cited by 3 publications

(12 citation statements)

References 52 publications

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“…This fluctuation is attributed to the unevenness of the failure surface, which causes the soil on both sides of the surface to interact under vertical pressure, leading to σ x fluctuations. The upper limit of this fluctuation corresponds to the result of Zhang [49], while the lower limit corresponds to the method in this paper, which exhibits good consistency with the numerical results.…”

Section: Discrete Element Experimentssupporting

confidence: 82%

“…Within this range, the principal stress direction remains constant, and σ y is the intermediate principal stress. Therefore, the difference between the method in this paper and Zhang [49] in the active earth pressure region is not significant, differing by…”

Section: Discrete Element Experimentsmentioning

confidence: 82%

“…It can be seen that the σ y is also a function of the ε x , that is, it varies with the direction and amount of displacement of the retaining wall, and it can be seen that Zhang [49] assumed that the σ y in the soil behind the wall is the static earth pressure is not appropriate.…”

Section: Calculation Methods For Earth Pressure Considering Axial Stressmentioning

confidence: 99%

“…The numerical results were compared with the results of this study, Zhang [49] and Rankine theory, as shown in Figure 10.…”

Section: Discrete Element Experimentsmentioning

confidence: 99%

“…Xie [48] assumed a planar damage surface with constant shear strain along the slip plane, but this assumption does not adequately represent the actual behavior during the displacement process. Zhang [49] assumed that the stress in the soil behind the wall along the axial direction of the wall is the static earth pressure, which is different from the actual situation. A review of the relevant literature indicates that most of these studies have certain limitations.…”

Section: Introductionmentioning

confidence: 99%

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Calculation Method of Earth Pressure Considering Wall Displacement and Axial Stress Variations

Dang,

Wang,

Cao

et al. 2023

Applied Sciences

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Current earth pressure calculation methods suffer from certain limitations because they do not consider the effect of retaining wall displacement. In this study, the soil behind the wall is assumed to be in a plane strain state, and drawing upon nonlinear elastic constitutive theory, an earth pressure calculation method is proposed, capable of considering both axial stress and wall displacement. To account for changes in soil modulus with confining pressure, the tangent modulus from the Duncan-Chang nonlinear model is introduced. Depending on the direction of the principal stress behind the retaining wall, the static earth pressure point, the major principal stress inflection point, and the minor principal stress second inflection point are determined. The conditions for the existence of the second inflection point are also given. These specific points, together with the limit earth pressure point, divide the earth pressures acting on the wall into six regions. The study provides earth pressure calculation formulas for T (translation) mode, RBT (rotation about a point below the base) mode, and RTT (rotation about a point above the top) mode based on the characteristics of wall displacement distribution in each mode. The proposed method exhibits good agreement with the test results, offering an effective approach for accurately calculating earth pressures related to displacement.

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Section: Discrete Element Experimentssupporting

confidence: 82%

Section: Discrete Element Experimentsmentioning

confidence: 82%

Section: Calculation Methods For Earth Pressure Considering Axial Stressmentioning

confidence: 99%

“…The numerical results were compared with the results of this study, Zhang [49] and Rankine theory, as shown in Figure 10.…”

Section: Discrete Element Experimentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Calculation Method of Earth Pressure Considering Wall Displacement and Axial Stress Variations

Dang,

Wang,

Cao

et al. 2023

Applied Sciences

Self Cite

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Active Earth Pressure Calculation for a Translational Retaining Wall Considering the Influence of Basement Inverse Slope

Chen,

Qian,

2024

Int. J. Geomech.

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Hazards and Treatment of Collapsible Loess Foundation on Ultrahigh Voltage Transmission Lines

Zhang,

Hu,

et al. 2023

Advances in Civil Engineering

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With the development of ultrahigh voltage transmission line construction in northwest China, an increasing number of overhead transmission lines are crossing the loess regions. Ensuring the stability of electricity transmission towers and mitigating the risk of collapse are crucial prerequisites for the construction of transmission lines. Taking the 750 kV demonstration electricity transmission line in Guanting–Lanzhou East as an example, representative loess samples were selected for compression and collapsing sensitivity tests. Four foundation treatment schemes were designed, and the wetting deformation characteristics were investigated through numerical simulation of the rainfall infiltration process. Corresponding optimisation schemes were proposed. The collapsing process was divided into four stages through laboratory collapsing tests. The relationship function between saturation and the Duncan–Chang model parameters of loess was established, which was introduced into the finite element model to consider the rainfall infiltration process. The analysis of the displacement field, and loess saturation field with time after rainfall infiltration for the four schemes showed that adding a lime-stabilised soil cushion layer and waterproof layer to the inclined column foundation had the best effect. Given that the design scheme needs to consider safety and economy, the thickness of the cushion layer was optimised, thereby reducing the use of lime-stabilised soil by 20%. Research findings provide meaningful guidance for the design of transmission tower foundations in loess areas.

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Estimation of earth pressure against retaining walls with different limited displacement modes based on elastic theory

Cited by 3 publications

References 52 publications

Calculation Method of Earth Pressure Considering Wall Displacement and Axial Stress Variations

Calculation Method of Earth Pressure Considering Wall Displacement and Axial Stress Variations

Active Earth Pressure Calculation for a Translational Retaining Wall Considering the Influence of Basement Inverse Slope

Hazards and Treatment of Collapsible Loess Foundation on Ultrahigh Voltage Transmission Lines

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