Non-limit passive soil pressure on rigid retaining walls

Dou, Guotao; Xia, Junwu; Yu, Wenjie; Fang, Yuan; Bai, Weigang

doi:10.1016/j.ijmst.2017.03.020

Cited by 9 publications

(6 citation statements)

References 9 publications

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“…However, experiments by Terzaghi [3] and Fang [4] showed a robust correlation between the earth pressure behind the retaining wall and the wall displacement. Subsequent experiments have shown that the soil arching effect [5,6] and the displacement pattern [7][8][9] also affect the earth pressure distribution.…”

Section: Introductionmentioning

confidence: 99%

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: Introductionmentioning

confidence: 99%

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

Dang,

Wang,

Cao

et al. 2023

Applied Sciences

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“…In order to improve the traditional earth pressure theory, the earth pressure calculation in rotating mode is mainly based on three methods, namely, (a) the sliding soil wedge method, (b) the retaining wall displacement method, and (c) the horizontal differential element method. Although (a) has the natural advantage of being based on Coulomb's theory, it cannot reflect the distribution of earth pressure [10]. In addition, (b) relies on experience to predict the stress state of the fill behind the wall but lacks research on the earth pressure mechanism [11].…”

Section: Introductionmentioning

confidence: 99%

Calculation of Nonlimit Active Earth Pressure against Rigid Retaining Wall Rotating about Base

2022

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A retaining wall with sandy fill was considered as the research object in order to study the nonlimiting active earth pressure under the rotation about the base (RB mode). Rankine’s and Coulomb’s earth pressure theories are no longer applicable to the above conditions (RB mode and nonlimiting active earth pressure). In order to improve the traditional earth pressure calculation methods (Rankine and Coulomb), a calculation method using curvilinear thin layer elements is presented with overall considerations of wall displacement, soil arching effect, and friction angle exertion coefficient to deduce the nonlimit active earth pressure under RB. Additionally, the calculation results were in good agreement with model test data (from Fang and Smita). Moreover, a parametric analysis was carried out. It was revealed that the developed value of the shear strength decreased with the depth, and the active earth pressure distribution curve was linear and nonlinear in the upper and lower halves, respectively.

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“…Therefore, the classical earth pressure theory is not completely suitable for earth pressure design and calculation of rotary retaining walls. To overcome this limitation, some scholars have estimated the retaining-wall earth pressure under displacement modes of rotation around the wall bottom (RB) and rotation around the wall top (RT) [5][6][7][8][9]. In addition, the retaining wall is inevitably built near natural rocks and supporting structures, which form a confined filling between the retaining wall and the existing support [10,11].…”

Section: Introductionmentioning

confidence: 99%

Inclined Layer Method-Based Theoretical Calculation of Active Earth Pressure of a Finite-Width Soil for a Rotating-Base Retaining Wall

et al. 2022

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In this study, we evaluated the active earth pressure on a retaining wall with a narrow cohesive fill under the rotation about the base mode. Under these conditions, Rankine’s and Coulomb’s earth pressure theories are not strictly effective. To improve the traditional earth pressure calculation methods (Rankine and Coulomb methods) and deduce the active earth pressure under the rotation about the base mode, here, we propose a new calculation method that incorporates the effects of wall displacement, soil arching and soil cohesion using inclined thin-layer elements. The calculation results are in good agreement with the model test data. Based on the parameter analysis, a critical aspect ratio of B/H = cotβ is determined along with a detailed elucidation of the various influencing factors (such as aspect ratio, cohesion and friction angle). The paper presents several solutions to improve the stability and lower the costs of retaining walls.

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Non-limit passive soil pressure on rigid retaining walls

Cited by 9 publications

References 9 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

Calculation of Nonlimit Active Earth Pressure against Rigid Retaining Wall Rotating about Base

Inclined Layer Method-Based Theoretical Calculation of Active Earth Pressure of a Finite-Width Soil for a Rotating-Base Retaining Wall

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