8 results ·
● Live web index
S
sciencedirect.com
article
https://www.sciencedirect.com/science/article/pii/S2772883825000731
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 [...] 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 [...] Under a Creative Commons license
Open access
## Highlights
•Dual-role geotextiles enhance slope stability under drawdown conditions.
•Drainage-enabled geotextile achieves a 24 % higher FOS than non-drainage type.
•Combined primary and secondary geotextiles prevent shallow failure surfaces.
•Permeable geotextiles accelerate pore pressure dissipation, lowering phreatic line.
•Sustainable geotextile solutions reduce slope failure risks amid climate uncertainty.
## Abstract
L
library.geosyntheticssociety.org
article
https://library.geosyntheticssociety.org/wp-content/uploads/resources/proceed…
Salih Keskin and Laman 2014). The outcome of these research has established that reinforcing slopes with geosynthetic layers significantly improves the bearing capacity of the footing and reduces settlement. The literature shows that there is a limited study on the stability analysis of reinforced slopes that are not subjected to footing loads on the crest. A typical application of the outcome of such investigations is landscape works. Mehdipour et al. (2013) investigated the stability of [...] may involve a low-height steep slope that may not need a stone wall support as shown in Figure 1. In such cases, the slopes can be reinforced with geosynthetic layers (geotextile or geogrid), to improve the stability, defined in terms of factor of safety F to an acceptable value. Geosynthetic layers have proven to be effective and economical in improving the mechanical properties of soils, and moreover, they allow to construct environmentally friendly and sustainable structures (Shukla et al. [...] following problem: Determine the factor of safety of a reinforced and unreinforced sandy soil slope with β=50°, γ=16.5 kN/m3, c’=1 kPa, ϕ’=33°, and H=3 m 4.1 Solution It is first required to calculate the stability number, N=c’/γHtan ϕ’ . For this case N=0.03. Using the calculated N value and the stability charts presented in Figure 3 (a-b), the factors of safety for the unreinforced and reinforce slopes are calculated to be 0.85 and 1.25, respectively. It is shown in this analysis that
S
scdot.org
article
https://www.scdot.org/content/dam/scdot-legacy/business/pdf/geotech/2022-by-c…
test. Slope stability analyses should account for interface shear strength along a geocomposite drain. The geocomposite/soil interface will most likely have a friction value that is lower than that of the soil. Thus, a potential failure surface may be induced along the interface. Geotextile reinforcements (primary and intermediate layers) must be more permeable than the reinforced fill material to prevent a hydraulic build up above the geotextile layers during precipitation. Special emphasis on [...] or uniaxial) and geotextiles. These reinforcements are a wrapped face consisting of a layer of geogrid that wraps around the face and a layer of geotextile to prevent erosion of the reinforced soil materials. Inextensible reinforcements consist of bars or bar mats (metallic grids) and shall meet the requirements in STS SC-M-713 (latest version) for Geotechnical Design Manual APPENDIX D January 2022 D-25 Mechanically Stabilized Earth (MSE) Walls for the inextensible material properties. These [...] the Number Average Molecular Weight of PET Yarns Based on Relative Viscosity Value ASTM D7409 – Standard Test Method for Carboxyl End Group Content of Polyethylene Terephthalate (PET) Yarns ASTM D5261 – Standard Test Method for Measuring Mass per Unit Area of Geotextiles D.6 UNREINFORCED STABILITY The overall (global) stability of the unreinforced slope is checked first to determine if reinforcement is required, if the potential for deep-seated failure surfaces is possible, and to determine the
C
colemanmoorecompany.com
article
https://www.colemanmoorecompany.com/feeds/blog/geotextile-slope-stabilization
### Reinforcement
Woven geotextiles and geogrids add tensile strength to the soil mass, distributing applied loads and improving shear resistance. On soft or weak soils where a slope cannot support its own weight, reinforcement is the primary function. High-strength geogrids used in Geosynthetic-Reinforced Soil (GRS) walls and slopes are designed to deliver this tensile capacity with low strain and a high bond coefficient with soil.
### Filtration and Pore Pressure Relief [...] Geotextile fabric for slope protection is a permeable synthetic or natural material installed on or within a slope to control erosion, reinforce soil, and manage water movement. Depending on the product, it functions as a filter, reinforcement layer, separator, or surface cover — preventing soil loss from rainfall, runoff, and gravity.
### What are the options for slope stabilization? [...] Geotextiles address multiple failure mechanisms at once: reinforcing soil, controlling drainage, protecting exposed surfaces, and separating dissimilar materials. Engineers, contractors, and municipalities across Iowa use them on everything from highway embankments to riverbank revetments.
This guide covers the main types of geotextile fabric, how they stabilize slopes, how to choose the right product, installation best practices, and common applications.
Key Takeaways:
L
library.ctr.utexas.edu
research
https://library.ctr.utexas.edu/hostedpdfs/tsusm/0-6792-1.pdf
recommended the use of geogrid or a combination of geogrid and geotextile for slope reinforcement, while the others recommended independent use of geotextile. Some prefer high strength geotextiles over geogrids, as they provide a separation function and can be more cost effective in certain cases. Figure 2. Recommended Design Methods. The internal stability of a soil slope can be determined by four basic factors, including the slope angle (β), soil weight (W), cohesion (c), and internal [...] overall slope stability were 40 ft for the bottom three geogrid layers and 30 ft at the top of the slope. The slope face was constructed using prefabricated welded wire forms bents to the specified slope batter of 45°. A secondary reinforcement and a seven ounce non-woven geotextile were place in each wire form prior to primary geogrid placement and compacted soil. The secondary reinforcement provided surficial slope stability and a minimum 6 ft top and bottom embedment specified by [...] Analysis Figure 20. External Stability Analysis of Geosynthetic Reinforced Steep Slopes (Berg et al., 2009). The analysis performed in Step 5 should provide the factor of safety for failure surfaces behind the reinforced soil zone. However, as a check, classical rotational slope stability methods such as Bishop (1955), Morgenstern and Price (1965), Spencer (1967), or others may be used. Appropriate computer programs may also be employed. To determine local bearing failure at the toe (lateral
C
cdn.glenraven.net
article
https://cdn.glenraven.net/geogrid/pdf/en_us/StrataSlope_Reinforced-soil-slope…
it was shown that the use of horizontally placed geosynthetic reinforcement to stabilize surficial soils in slope applications is a commonplace procedure. For steep reinforced slopes, for example, relatively short secondary reinforcement layers are placed between the primary reinforcement to provided stability to the surface soil during and after construction to help with the growth of vegetation. ANALYSIS The cross section in Figure 17 illustrates a typical steep slope arrangement with geogrid [...] a licensed design professional. ________________________________________________________________________ © Copyright 2010 by Strata Systems, Inc. Page 3 Version 100119 REINFORCED SOIL SLOPES AND EMBANKMENTS For the purposes of this document, a reinforced slope is defined as a compacted fill embankment that incorporates the use of horizontally placed geosynthetic reinforcement to enhance the stability of the soil structure. This broad definition encompasses many and varied applications. In this [...] Slope Angles < 45 degrees The use of secondary or intermediate geogrid layers is a very useful and economic way to provide stability at the face of reinforced slopes with inclinations gentler than 45 degrees (1H:1V). Intermediate geogrid layers are relatively short layers of lightweight geogrid reinforcement placed at relatively tight spacing between the layers of primary reinforcement. In addition to providing surficial stability to the reinforced slope, the intermediate geogrids provide a
D
damsafety.org
article
https://damsafety.org/reference/reinforced-slopes-using-geotextile-fibers-com…
The primary reinforcement provides overall stability, while the intended purpose of the secondary reinforcement is to reduce raveling and minifailures of the slope face between the primary reinforcement layers. However, in many cases the secondary reinforcement does not effectively reduce the raveling and mini-failures long term. This has resulted in significantly increased maintenance costs on many projects. Until recently, no viable solution for this problem was available. Within the past [...] of slopes. This combination of geosynthetics has the potential to virtually eliminate any significant future maintenance problems due to raveling and mini-failures at the slope face, for properly designed reinforced embankments. Brief case histories of slopes constructed using fiber-reinforced soil, and design examples using high-strength geotextile - fibers composite are discussed. [...] Planar geosynthetics such as high-strength geotextiles and geogrids have been in widespread use as earth slope reinforcement for more than a decade. The use of these materials in slope applications has been highly successful. Common practice has been to provide primary reinforcement in discrete layers throughout the reinforced zone, with shorter, intermittent layers of the planar reinforcement placed between the primary layers at the slope face to act as secondary reinforcement. The primary
S
solmax.com
article
https://www.solmax.com/ca/en/blog/what-are-the-key-considerations-in-designin…
### Design principles of reinforced soil slopes
The design of reinforced soil slopes hinges on two critical components: the facing system and the reinforcement strategy. The facing system is integral to erosion protection and structural support, enabling the formation of slopes that surpass natural stable inclinations without compromising stability. Secondary reinforcement, typically comprising geosynthetic materials, aids in compaction and mitigates surficial sloughing at the slope face. [...] Reinforced soil slopes (RSS) stand as a cornerstone in modern geotechnical engineering, offering robust solutions for constructing slopes with inclinations less than 70 degrees from the horizontal. These structures are pivotal in combating erosion, facilitating vegetation growth, and ensuring the stability of steepened terrain. The general facing systems deployed in these constructions can be broadly classified into two types: soft or vegetated and hard armored systems, which may or may not [...] When employing geosynthetic materials, ensuring UV stability is crucial for long-term effectiveness, especially in environments with significant exposure to sunlight. Structures with a design life greater than three years, as recommended by FHWA guidelines, should use UV-stable materials to prevent degradation over time. In vegetated structures, where vegetation might provide some protection from UV light, the use of UV-stable facing is still recommended to safeguard against areas where