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library.geosyntheticssociety.org
article
https://library.geosyntheticssociety.org/wp-content/uploads/resources/proceed…
this analysis that reinforcing the slope will improve F by 47% (almost double) from unstable state (F<1) to a stable condition (F = 1.25). 5. CONCLUSIONS A parametric study has been conducted to determine the influence of soil strength parameters on the factor of safety of low-height (3 m) unreinforced and reinforced slopes with varying angles from 40° to 60°. The study was conducted using the limit equilibrium method, available in the commercial software, Slope/W. Based on the results and [...] by Zonberg et al. (1998) and Tiwari and Samadhiya (2016) for reinforced slopes, a parametric study was carried out on the 40°, 50°, and 60° slopes (unreinforced and reinforced) as presented in Figure 2 (a-d) by varying the slope soil strength parameters (c’ from 0 to 5 kPa and ϕ’ from 30° to 50°), while keeping the slope height, geosynthetic layout and soil unit weight constant, to determine their effect on the factor of safety, F. The range of c’ and ϕ’ adopted in the study are typical of [...] to provide adequate slope stability. Michalowski (1997) analyzed the stability of slopes with geosynthetic layers installed at equal vertical spacing throught the slope height. The investigation produced design charts that can determine the required reinforcement strength and length to prevent slope failure. Zhu et al. (2014) prepared charts for quick assessment of the stability of stacked geotextile tubes. The charts allowed the factor of safety to be evaluated base on the slope geometry and
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onlinepubs.trb.org
article
https://onlinepubs.trb.org/Onlinepubs/sr/sr247/sr247-017.pdf
The Analysis of Wall Supports to Stabilize Slopes. In Application of Walls to Landslide Control Problems, Proceedings of two sessions, American Society of Civil Engineers National Convention, Las Vegas (R. B. Reeves, ed.), American Society of Civil Engineers, New York, N.Y., pp. 19-29. Murray, R. T. 1982. Fabric Reinforcement of Embankments and Cuttings. In Proc., Second International Conference on Geotextiles, Las Vegas, Industrial Fabrics Association International, St. Paul, Minn., Vol. 3, [...] high steep slopes and high walls. Steep slopes of reinforced soil or vertical retaining walls take up less of the right-of-way, and thus they are especially attractive for landslide repairs adjacent to transportation facilities. Common types of backfill reinforcement inclu-sions include steel or polymeric strips, steel or polymeric grids, geotextile and geogrid sheets, and steel cables or bars attached to different anchor systems. The two main mechanisms of stress trans-fer between the [...] walls include landslide stabilization on remote moun-tain roads, highway retaining walls on steep slopes, embankment walls for temporary or per-manent road widening or diversion, and highway embankment walls on soft foundation soils (Mitchell and Villet 1987). The use of geotextiles in reinforced-soil walls followed shortly after the introduction of Rein-forced Earth. The first geotextile-reinforced wall was built in France in 1971. In the United States, the first such wall was one 3.3 rn high
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hrpub.org
article
https://www.hrpub.org/download/20231030/CEA42-14892396.pdf
Oct 30, 2023 — This study compares the safety factors on the pre- landslide slopes, the existing condition slopes, and the slopes with geotextile reinforcement ...Read more11 pages
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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 [...] a higher factor of safety (1.790) compared to non-drainage geotextiles (1.439). These findings highlight the dual role of geotextiles in providing reinforcement and drainage, confirming their potential as a sustainable solution for mitigating slope failures during rapid drawdown in the face of climate uncertainty.
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homepage.ntu.edu.tw
research
https://homepage.ntu.edu.tw/~khyang/word/Paper/Chou%20et%20al.%20(2023)%20JOG…
“A method of analysis of the stability of em-bankments assuming parallel inter-slice forces.” Geotech-nique, 24(4), 661-665. Taipei Civil Engineers Association, (2004). Guidelines for Design and Construction of Reinforcement Soil Retaining Structures in Integration with Ecology and Landscape. Thuo, J.N., Yang, K.-H., and Huang, C.-C. (2015). “Infiltration into unsaturated reinforced slopes with nonwoven geotextile drains sandwiched in sand layers.” Geosynthetics Interna-tional, 22(6), 457-474. [...] Sadrnejad, A., and Arjomand, M.A. (2009). “Strength enhancement of clay by encapsulating geogrids in thin layers of sand.” Geotextiles and Geomembranes, 27(6), 447-455. Abdi, M.R. and Zandieh, A.R. (2014). “Experimental and numer-ical analysis of large-scale pull-out tests conducted on clays reinforced with geogrids encapsulated with coarse material.” Geotextiles and Geomembranes, 42(5), 494-504. Abu-Farsakh, M., Coronel, J., and Tao, M.J. (2007). “Effect of soil moisture content and dry [...] In 1993, it was the highest GRS structure in the world. Figure 7(b) displays a 30-m RSS at National Chi Nan University used for slope stabilization. Chou et al. (2020) conducted a detailed investigation of the sus-tainable renovation of this RSS. Figure 7(c) presents a 40-m RSS near Sun Moon Lake used for landslide remediation. Figure 7d displays a 25-m RSS in Tianliao Moon World used for slope pro-tection and to prevent the breach of the uphill lake due to severe mudstone erosion. Because
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damsafety.org
article
https://damsafety.org/reference/reinforced-slopes-using-geotextile-fibers-com…
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 [...] Home
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# Reinforced Slopes Using Geotextile - Fibers Composite
Resource Type
Industry Papers and Articles
Reference Title
Reinforced Slopes Using Geotextile - Fibers Composite
Author/Presenter
Gregory, Garry H.
Year
1998
Date
October 12-16, 1998
Event Location
Louisville, Kentucky
Abstract/Additional Information
Paper on file with ASDSO.
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solmax.com
article
https://www.solmax.com/ca/en/blog/what-are-the-key-considerations-in-designin…
Geosynthetic materials, including geotextiles and geogrids, play a versatile role in RSS, enhancing structural support, facilitating drainage, and supporting vegetation growth. These synthetic solutions bridge the gap between soft and hard facing options for reinforced slopes, offering tailored reinforcement that meets specific site requirements. They are particularly valuable in environments subjected to dynamic weather conditions and hydraulic pressures, where traditional materials might fail [...] In situations where reinforced slopes are subjected to severe erosive forces associated with water currents and wave attack, the erosion protection system must be specifically designed to resist these forces. Typically, such severe cases will require a ‘hard’ armor erosion protection system such as riprap, gabions, articulating concrete blocks, or fabric-formed concrete. While these systems do not incorporate a geosynthetic face wrap, a geotextile filter is typically installed beneath the [...] ### 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.
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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.