Deformation and Stability Analyses of Hybrid Earth Retaining Structures

Sundaravel, Vairamani; Dodagoudar, G. R.

doi:10.1007/s40891-020-00222-1

Cited by 7 publications

(2 citation statements)

References 56 publications

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“…The shear strength would subsequently decrease, resulting in shallow slope instabilities [5,6]. The use of structural measures such as surface and subsurface drainage improvements to minimize infiltration and to lower the groundwater table, construction of retaining structures to support collapsible mass, and internally stabilized systems have long been used to prevent these slope instabilities [7][8][9]. However, the application of vegetation for slope rectification is becoming popular among geotechnical engineers due to its low cost, aesthetic value, and sustainability [10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Effects of Chrysopogon zizanioides root biomass and plant age on hydro-mechanical behavior of root-permeated soils

Rajamanthri

Jotisankasa

Aramrak

2021

Int. J. of Geosynth. and Ground Eng.

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Root biomass and plant age have been recognized to influence the hydro-mechanical properties of root-permeated soils, but its direct field observation was scarce. In this study, influences of Chrysopogon zizanioides (vetiver grass) of various plant ages (up to 2 years) on soil-water retention curves (SWRCs), saturated permeability, specific water-retention capacity and soil aggregate stability have been investigated. Undisturbed soil samples were obtained at different locations, representing the root zone, upslope, and downslope from the vetiver hedgerow at three bio-engineered slopes in Western Thailand. As root biomass increased, air-entry suction of soil slightly decreased, and porosity significantly increased due to the formation of macropores and aggregated soil structure in the root zone (0-15 cm depth). Nevertheless, below the root zone (15-25 cm depth), the air-entry suction of soil increased with root biomass due to the occupancy of soil pores by roots. Saturated permeability shows a positive correlation with plant age in the root zone, while a slightly negative correlation was found below the root zone. The upslope and downslope soil samples showed a negative correlation due to the effect of sediment trap. The specific water retention capacity and soil aggregate stability became higher in the root zone and positively correlated with plant age.

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Section: Introductionmentioning

confidence: 99%

Effects of Chrysopogon zizanioides root biomass and plant age on hydro-mechanical behavior of root-permeated soils

Rajamanthri

Jotisankasa

Aramrak

2021

Int. J. of Geosynth. and Ground Eng.

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“…Selecting a suitable soil constitutive model plays a vital role in determining the fit of the simulation results to the field data. Considering the nonlinear relation between the stiffness and the dynamic shear modulus of the soil under work load [17,18], the finite element software Plaxis 3D and the Hardening Soil Model with Small Strain Stiffness (HSS model) were used to analyze the project. To minimize the boundary effects, according to existing study results [19,20], the model dimensions were set to 300 m * 300 m * 40 m. e basic soil elements of the 3D finite element mesh are the 10-node tetrahedral elements.…”

Section: Establishing the Three-dimensional Finite Element Modelmentioning

confidence: 99%

Deformation Response Research of the Existing Subway Tunnel Impacted by Adjacent Foundation Pit Excavation

Dong

Mei

Yang

et al. 2021

Advances in Materials Science and Engineering

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The excavation of foundation pits is one of the most important factors causing changes to the initial stress state of its surrounding soil, thus affecting the safety of nearby existing subway tunnels. In order to study the deformation in metro lines induced by adjacent foundation pit excavation, a three-dimensional model based on an actual engineering case was established, and the deformation regulations of the retaining wall, surrounding soil, and tunnels were investigated, which also validated the model’s feasibility. Additionally, the deformation and strain response of the subway tunnel under different selection parameters of the enclosing structure and soil were studied. The results showed that, after the foundation pit excavation, the soil inside the pit underwent an uplift, the surrounding soil outside of the pit showed vertical settlement, and the retaining wall created a deformation towards the interior of the pit. Mechanical parameters of plate elements have a small influence on the deformation of metro lines. Axial strain and maximum displacement of the subway tunnel increase with the increase in the soil’s Poisson’s ratio, and on the contrary, they decrease with the increase in the m-value and G 0 , ref . The maximum responses of the subway tunnel came from changes to G 0 , ref and υ . These analysis results can be used for the safety evaluation of subway tunnel operation, design, and construction in other similar engineering settings.

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Prediction and validation of geogrid tensile force distribution in back-to-back MSE walls under rail axle load: finite-element and intelligent techniques

Vadavadagi,

Chawla,

Kumar

2024

Environ Earth Sci

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Deformation and Stability Analyses of Hybrid Earth Retaining Structures

Cited by 7 publications

References 56 publications

Effects of Chrysopogon zizanioides root biomass and plant age on hydro-mechanical behavior of root-permeated soils

Effects of Chrysopogon zizanioides root biomass and plant age on hydro-mechanical behavior of root-permeated soils

Deformation Response Research of the Existing Subway Tunnel Impacted by Adjacent Foundation Pit Excavation

Prediction and validation of geogrid tensile force distribution in back-to-back MSE walls under rail axle load: finite-element and intelligent techniques

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