Summary
A procedure for the stability analysis and design of geosynthetic reinforced soil slopes over a firm foundation is described. Firstly the unreinforced slope is analysed, and for this a circular failure method is used which allows a surcharge load to be taken into account. Any method of slip circle analysis could be used to identify the coordinates of the centre of the slip circle, its radius and the minimum factor of safety. In this study, both internal and external stability analysis of the reinforced slope is presented. Internal stability deals with the resistance to pullout failure within the reinforced soil zone resulting from the soil/reinforcement interaction. The external stability is considered by an extension of the bilinear wedge method which allows a slip plane to propagate horizontally along a reinforcing sheet. The results for total tensile force, internal and external stability are presented in the form of charts.
For given properties of soil and slope geometry, the required strength of the geosynthetic and the length of reinforcement at the top and bottom of the slope can be determined using these charts. The results are compared with the published design charts by Schmertmannet al. (1987).
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References
Beech, J.F. (1987) Importance of stress-strain relationship in reinforced soil system design, inProceedings of Geosynthetics '87 Conference, New Orleans, USA, pp. 133–44.
Chouery, V.E., Watson, C.H. and Berg, R.R. (1989) Critical failure planes in analysis of reinforced slope, inProceedings of Geosynthetics '89 Conference, San Diego, USA, pp. 269–78.
Fowler, J. (1982) Theoretical design consideration for fabric reinforced embankment, inProceedings of the Second International Conference on Geotextiles, Las Vegas, Nevada, USA,3, pp. 665–70.
Jewell, R.A. (1982) A limit equilibrium design method for reinforced embankments on soft foundations, inProceedings of the Second International Conference on Geotextiles, Las Vegas, Nevada, USA,3, pp. 671–6.
Koerner, R. (1990)Designing with Geosynthetics, Prentice-Hall, Englewood Cliffs, IInd edition.
Langston, P.J. and Williams, N.D. (1989) Design method for reinforced embankments on soft foundations, inProceedings of Geosynthetics '89 Conference, San Diego, USA, pp. 172–83.
Leshchinsky, D. and Boedeker, R.H. (1989) Geosynthetic reinforced soil structures,American Society of Civil Engineers, Journal of Geotechnical Engineering,115, 1459–77.
Leshchinsky, D. and Reinschmidt, A.J. (1985) Stability of membrane reinforced slopes,American Society of Civil Engineers, Journal of Geotechnical Engineering,111, 1285–1279.
Murray, R. (1982) Fabric reinforcement of embankments and cuttings, inProceedings of the Second International Conference on Geotextiles, Las Vegas, Nevada, USA,3, pp. 707–13.
Rowe, R.K. (1984) Reinforced embankment: analysis and design,American Society of Civil Engineers, Journal of Geotechnical Engineering,110, 231–145.
Schmertmann, G.R., Chouery-Curtis, V.E., Johnson, R.D. and Bonaparte, R. (1987) Design charts for geogrid reinforced soil slopes, inProceedings of Geosynthetics '87 Conference, New Orleans, USA, pp. 108–20.
Schneider, H.R. and Holtz, R.D. (1986) Design of slopes reinforced with geotextile and geogrid,Geotextiles and Geomembrane,3, 29–51.
Verduin, J.R. and Holtz, R.D. (1989) Geosynthetically reinforced slopes: a new procedure, inProceedings of Geosynthetics '89 Conference, San Diego, USA, pp. 279–90.
Wallace, R.B. and Fluet, J.E. (1987) Slope reinforcement using geogrid, inProceedings of Geosynthetics '87 Conference, New Orleans, USA, pp. 121–32.
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Mandal, J.N., Labhane, L. A procedure for the design and analysis of geosynthetic reinforced soil slopes. Geotech Geol Eng 10, 291–319 (1992). https://doi.org/10.1007/BF00880706
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DOI: https://doi.org/10.1007/BF00880706