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I
igs.org.in
article
https://igs.org.in/storage/proceedings-uploads/TH7-42-170523010334.pdf
Fig. 1. Modeled Geotextile reinforced slope adopted for finite element analysis Table 1. Summary of the soil properties and reinforcement parameters used in FEA Soil/ Reinforcement Ψ () c (kN/m2) () E (MPa) EA (kN/m2) Lg (m) Sv (m) Embankment 7 7 37 0.35 33 N.A Base Layer 2 10 32 0.35 34 Geotextile N.A 4500-13500 6.4 1.0 c =cohesion, E = Modulus of Elasticity, EA = Reinforcement Stiffness, Lg = Length of Geotextile, N.A = Not Applicable, Sv = Vertical Spacing of Geotextile Layers, = [...] (Lg) of 6.4 m. The uniform vertical spacing (Sv) of 1.0 m between any two geotextile layers was chosen. To simulate staged construction method which is adopted at site, finite element tool PLAXIS 2D was used for stability analysis. The construction of slopes was simulated in 7 stages of equal height for all the slope inclinations. The results showed that minimum axial forces were developed at the top most geotextile layer for all the four slope inclinations (= 45, 60, 75& 90). Maximum [...] and validate finite element methods. Bergado et al. (2002) conducted stability analysis of embankment with and without reinforcement using PLAXIS 2D and concluded that single layer of high-strength geotextile (HSG) increases the critical slope height up to 1.5 times higher than that of the unreinforced case. HSG can significantly reduce vertical as well as horizontal displacement during plastic analysis. Zornberg and Arriaga (2003) conducted digital image analysis and centrifugal testing to
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scirp.org
article
https://www.scirp.org/pdf/ojce_2023030910394677.pdf
GeoStudio 2018 R2 finite element tool was used for analyzing the geo- synthetic reinforced embankment slopes underlain by soft clay soil.
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sciencedirect.com
article
https://www.sciencedirect.com/science/article/pii/S2772883825000731
Global warming has intensified erratic climatic events, such as increased rainfall, flooding, and rapid drawdown, often triggering slope failures. This study investigates the influence of primary and secondary geotextile reinforcements on the stability of unsaturated soil slopes under rapid and transient drawdown conditions. Seepage forces were analyzed using the effective stress B-bar method and finite element method (FEM), while slope stability was assessed using the limit equilibrium method [...] equilibrium method (LEM) integrated with the unsaturated soil mechanics concepts. Results revealed that the combined use of the primary and secondary geotextile reinforcements significantly improves slope stability by mitigating shear stresses near the slope face, reducing shallow failure surfaces, and ensuring global stability. Drainage-enabled geotextiles were particularly effective, facilitating rapid dissipation of pore pressure, lowering the phreatic surface, and achieving a higher factor [...] ## Graphical abstract
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## Keywords
Slope stability
Unsaturated slope
Drawdown
Geotextile
Finite element method
Limit equilibrium method
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## Cited by (5)
L
library.ctr.utexas.edu
research
https://library.ctr.utexas.edu/hostedpdfs/tsusm/0-6792-1.pdf
deep-seated global, lateral squeeze, and bearing failure. Seismic limit-equilibrium approaches were used in some cases. Other engineers implemented a finite element analysis for designing adequate reinforcement based on the limit-state approach. Objectives were to find problem areas, investigate potential failure mechanisms, and design a safe, reliable, and economical structure. A common computational approach for designing slopes was to use analysis software. Additional information regarding [...] Stevenson Environmental Services Purpose: Maximize Available Land Duration: 09/2006 to 05/2011 Geosynthetic Material: Reinforcement: Polyester Geogrid & Geotextile Foundation & Embankment Soil: Foundation Soil Unit Weight (γ, lb/ft3) 56 Embankment Soil 90 Cohesion Friction Angle (c, lb/ft2) (ϕ,°) 0.29 0 0 29 Maximum Settlement of Loading Slab: 14 ft Slope Height: 70 ft Slope Length: 7920 ft Slope Angle: 1H:3V Design Method: Finite Element Analysis Construction Sequence: Install foundation [...] Transportation and Infrastructure Engineer: Western Canada Contractor: Kiewit/Flatiron General Partnership Purpose: Support Structure for Bridge Abutment Geosynthetic Material: Reinforcement: Polyethylene Geogrid Facing: Welded Wire Units Erosion Control: Geocomposite Slope Height: 30 ft Slope Angle: 69° Design Method: Finite Element Analysis Construction Sequence: A series of stone support columns were first installed at a depth of 66 ft, then the area was topped with a level granular
L
library.geosyntheticssociety.org
article
https://library.geosyntheticssociety.org/wp-content/uploads/resources/proceed…
Geosynthetic reinforced soil is recently one of the most commonly used soil improvement techniques to increase the stability of unreinforced slopes.
R
researchgate.net
research
https://www.researchgate.net/publication/269390926_Analyses_of_reinforced_soi…
This study will focus on the two dimensional finite element and limit equilibrium analyses of reinforced slopes.
A
agruamerica.com
article
https://agruamerica.com/slope-stability-analysis
The correct geosynthetic reinforcement must be determined to meet both long-term strength and soil interaction requirements. Failures commonly occur at interfaces, especially where geotextile and soil interact. Therefore, a stability analysis can evaluate the compatibility of the slope with a geosynthetic material as well as ensure the safe design of a slope. [...] Global stability and geosynthetics interact in base-liner situations where a failure plane resembling an arc can develop. This can be a very complicated calculation involving slope geometry, internal shear strength of the overlying and underlying mass, and veneer shear strength of the geosynthetics involved. For more complex slope analyses, methods other than limit equilibrium such as finite element analysis will be needed.
## The Important Role of Geosynthetics [...] The geometry of the slope, incorporated materials, soil, environmental (soil gasses) and geological forces (seismic and groundwater) are only a few of the factors to consider in determining slope stability. A careful analysis can assess the likelihood of sliding or collapse of the slope, its impacts and proper reinforcement techniques.
R
rosap.ntl.bts.gov
official
https://rosap.ntl.bts.gov/view/dot/37897/dot_37897_DS1.pdf
166 Case Study #55: Dickey Lake Roadway Grade Improvement Location: Dickey Lake, Montana Owner: Montana Department of Transportation Purpose: Support Structure for Roadway Geosynthetic Material: Reinforcement: Geogrid (6850 lb/ft) Facing: Biaxial Geogrid Erosion Control: Welded Wire Forms & Organic Blanket Embankment Soil: Glacial Till Slope Height: 30 ft to 60 ft Slope Angle: 1.5H:1V to 0.84H:1V Design Method: Global Stability Analysis with Safety Factors Construction Specifications: Montana Department of Transportation Construction Sequence: Reconstruction of a portion of US 93 around the shore of Dickey Lake required the use of an earth retention system to maintain grade and alignment.