Study on the Calculation Method of Active Earth Pressure and Critical Width for Finite Soil Behind the Retaining Wall

Huang, Kan; Liu, Runing; Sun, Yiwei; Li, Linyi; Xie, Yipeng; Peng, Xuejun

doi:10.3389/feart.2022.883668

Cited by 3 publications

(2 citation statements)

References 24 publications

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“…At the same time, some model experiments have demonstrated that the sliding surface is a curved surface [8,11]. Based on the curved sliding surface, several researchers [8,28,29] developed a theoretical formula for the earth pressure of finite soil between a rock face and a solid retaining wall. However, these researches focused on finite width soil near the building or bedrock.…”

Section: Introductionmentioning

confidence: 99%

“…But the research on active earth pressure for sloping finite soil while accounting for shear stress and curved slip surface needs further development. Following methodology of Huang et al [28], it was assumed in this study that the backfill had a cycloidal slip surface of the finite soil in translation mode. The horizontal flat-element method calculates the distribution of active earth pressure while accounting for the shear stress between the horizontal element layers; thus, an active earth pressure calculation model for sloping finite soil is established.…”

Section: Introductionmentioning

confidence: 99%

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Active Earth Pressure for Sloping Finite Soil While Accounting for Shear Stress and Curved Slip Surface

Wang

Xin-xi

et al. 2022

Geofluids

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Calculating the earth pressure of the sloping soil having finite width behind the retaining wall is difficult for stability calculation. Thus, a novel method to calculate the active pressure of cohesionless sloping finite soil behind a retaining wall was developed to investigate. Taking cohesionless soil as the research object and considering the principal stress rotation of soil, the resultant force for active earth pressure, action point position, and earth pressure distribution of sloping finite soil was obtained based on assumptions of the translational mode of the rigid retaining wall and cycloidal slip surface. The accuracy of the proposed method was verified by model tests. The influence of the slope height ratio l / H and slope angle α on earth pressure was analyzed in this study. The result revealed that the horizontal component of the active earth pressure distribution curve for sloping finite soil was linear in area I and nonlinear with a drum shape in area II. There was a noticeable change at the junction of the two areas. The resultant force of earth pressure and the height of action point of resultant force increased and tended to reach a certain value as the aspect ratio l / H increased. When l / H ≥ 0.4 , the height of the action point of resultant force tended to be two-fifths the height of the wall. The resultant force and the height of the action point decreased linearly as the slope bottom angle increased.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Active Earth Pressure for Sloping Finite Soil While Accounting for Shear Stress and Curved Slip Surface

Wang

Xin-xi

et al. 2022

Geofluids

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Analysis of Active Earth Pressure Behind Rigid Retaining Walls Considering Curved Slip Surface

Liu

2023

Geotech Geol Eng

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The active earth pressure acting on the rigid vertical retaining walls under translation mode has been investigated in this paper with a two-dimensional analytical method without prior hypotheses of the shape of soil arch, i.e. the trajectory of minor principle stress, which is totally different from with the existing method of combination of soil arch shape and horizontal flat-element analysis. Different emerging failure surface was compared and a parabolic surface was especially discussed in details. The proposed formula can be employed to predict the distribution of earth pressure and stresses in the failure zone. Furthermore, the analytical expression of the minor principle stress trajectory in the failure zone was derived from the stress equations. The results of the proposed analysis were compared with test data as well as the results of existing theories to validate its accuracy and applicability. The proposed distribution of earth pressure is in good agreement with the test data. Finally, a simple yet practical formulation was established to conveniently estimate active earth pressure in field.

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Determination of the Influence of the Disturbance Caused by Traversing Cross-Type Deep Foundation Pit Excavations

et al. 2023

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Accurately recognizing the influence of excavation disturbance on the traversing cross-type deep foundation pit of the subway, determining the active range of the disturbance, and reasonably arranging the structure within its range can effectively ensure the safety of the project and save resources to achieve the goal of sustainable development. A three-dimensional model was established using the soil small strain hardening model to examine the subway deep foundation pit project in the CBD (central business district) core area of Fuzhou Coastal New City, where the soil is mainly soft soil with high natural water content, high compressibility, and weak permeability. The model was verified against the theoretical solution of Melan, and the deformation characteristics of the cross-asymmetric foundation pit excavation were analyzed. The results show that, due to repeated disturbance from excavation and unloading between the foundation pits, the soil arching effect, and changes in the boundary conditions, the structure at the intersection and the surrounding soil interact. The horizontal displacement of the retaining structure and the surrounding surface settlement are quite different from those observed from a single foundation pit excavation. For instance, the maximum horizontal displacement of profile 1-3 in Zone I decreases by 26.1%, while the maximum horizontal displacement of profile 1-1 in Zone II increases by 20.4%, and the maximum surface settlement around the profiles also has similar characteristics. The disturbance on the retaining structure and soil in different areas at the intersection can be divided into positive and negative effects. The active range of the “disturbance influence zone” is determined: the foundation pit of Metro Line 6 is 3.5 He and the foundation pit of Metro Line F1 is 3.0 He. Finally, the influence of changes in the groundwater level on the active range of the “disturbance influence zone” is discussed.

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Study on the Calculation Method of Active Earth Pressure and Critical Width for Finite Soil Behind the Retaining Wall

Cited by 3 publications

References 24 publications

Active Earth Pressure for Sloping Finite Soil While Accounting for Shear Stress and Curved Slip Surface

Active Earth Pressure for Sloping Finite Soil While Accounting for Shear Stress and Curved Slip Surface

Analysis of Active Earth Pressure Behind Rigid Retaining Walls Considering Curved Slip Surface

Determination of the Influence of the Disturbance Caused by Traversing Cross-Type Deep Foundation Pit Excavations

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