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Numerical modeling of reinforced unpaved roads by geogrid

Year 2013, Volume: 3 Issue: 2, 109 - 116, 23.07.2016

Abstract

In this paper, numerical computations using Flac software are carried out to investigate the improvement of the bearing capacity of a reinforced unpaved roadway over soft clay. Placed between the subgrade and base course, or within the base course, the geosynthetic improves the performance of unpaved roads carrying channelized traffic and unpaved areas subjected to random traffic. The present study focuses on the mechanisms by which the reinforcement improves the behavior of the roadway under the effect of a static single load. The loading of the road is carried out by imposed displacement of the load contact until reaching a final displacement called rut. The pressure-displacement behavior was determined for small and large strain analysis for unpaved roads with or without reinforcement. The analysis of the distribution and the importance of tangential and normal stresses on the soil-base interface provide an explanation to the effect of the reinforcement in the improvement of the bearing capacity or what is commonly called mechanism of reinforcement. The study also highlights the effect of the stiffness and the anchorage length of the geogrid on the reinforcement

References

  • Barenberg, E. J., Hales, J., and Dowland, J. (1975). Evaluation of Soil-Aggregate Systems with MIRAFI Fabric. Report No. UILU-ENG-75-2020, prepared for Celanese Fibers Marketing Company. University of Illinois.
  • Burd, H. J., and Brocklehurst, C. J. (1990). Finite Element Studies of the Mechanics of Reinforced Unpaved Roads. Proceedings of the Fourth International Conference on Geotextiles, Geomembranes and Related Products,
  • Balkema, Vol. 1 (pp 217-221). The Hague, Netherlands. FLAC (2000) – Fast Lagrangian analysis of continua, Itasca Consulting Group, Inc., Minneapolis, MN.
  • Giroud, J. P., and Noiray, L. (1981). Geotextile Reinforced Unpaved Road Design. Journal of the Geotechnical Engineering Division, ASCE, Vol. 107, No. GT9 (pp 1233-1254).
  • Giroud, J. P., and Han, J. (2004). Design method for geogrid-reinforced unpaved roads. I: Development of design method. J. Geotech. Geoenviron. Eng., 130(8) (pp 775–786).
  • Giroud, J. P., and Han, J. (2004). Design method for geogrid-reinforced unpaved roads. II: Calibration and applications. J. Geotech. Geoenviron. Eng., 130(8) (pp 787–797).
  • Houlsby, G. T., and Jewell, R. A. (1990). Design of Reinforced Unpaved Roads for Small Rut Depths. Proceedings of the Fourth International Conference on Geotextiles, Geomembranes, and Related Products, Balkema, Vol. 1 (pp 171-176). The Hague, Netherlands.
  • Perkins, S.W. and Ismeik, M. (1997). A Synthesis and Evaluation of Geosynthetic-Reinforced Base Layers in flexible Pavements: Part I and Part II. Geosynthetics International, Vol. 4, No. 6 (pp 549-621).
  • Steward, J.E., Williamson, R., and Mohney, J. (1977). Guidelines for the use of Fabrics in Construction of low – Volume Roads. Report N° FHWA – IS – 78 – 205, Pacific Northwest Region Forest Service, US. Departement of Agriculture, Washngton, DC, USA, 172 p.
Year 2013, Volume: 3 Issue: 2, 109 - 116, 23.07.2016

Abstract

References

  • Barenberg, E. J., Hales, J., and Dowland, J. (1975). Evaluation of Soil-Aggregate Systems with MIRAFI Fabric. Report No. UILU-ENG-75-2020, prepared for Celanese Fibers Marketing Company. University of Illinois.
  • Burd, H. J., and Brocklehurst, C. J. (1990). Finite Element Studies of the Mechanics of Reinforced Unpaved Roads. Proceedings of the Fourth International Conference on Geotextiles, Geomembranes and Related Products,
  • Balkema, Vol. 1 (pp 217-221). The Hague, Netherlands. FLAC (2000) – Fast Lagrangian analysis of continua, Itasca Consulting Group, Inc., Minneapolis, MN.
  • Giroud, J. P., and Noiray, L. (1981). Geotextile Reinforced Unpaved Road Design. Journal of the Geotechnical Engineering Division, ASCE, Vol. 107, No. GT9 (pp 1233-1254).
  • Giroud, J. P., and Han, J. (2004). Design method for geogrid-reinforced unpaved roads. I: Development of design method. J. Geotech. Geoenviron. Eng., 130(8) (pp 775–786).
  • Giroud, J. P., and Han, J. (2004). Design method for geogrid-reinforced unpaved roads. II: Calibration and applications. J. Geotech. Geoenviron. Eng., 130(8) (pp 787–797).
  • Houlsby, G. T., and Jewell, R. A. (1990). Design of Reinforced Unpaved Roads for Small Rut Depths. Proceedings of the Fourth International Conference on Geotextiles, Geomembranes, and Related Products, Balkema, Vol. 1 (pp 171-176). The Hague, Netherlands.
  • Perkins, S.W. and Ismeik, M. (1997). A Synthesis and Evaluation of Geosynthetic-Reinforced Base Layers in flexible Pavements: Part I and Part II. Geosynthetics International, Vol. 4, No. 6 (pp 549-621).
  • Steward, J.E., Williamson, R., and Mohney, J. (1977). Guidelines for the use of Fabrics in Construction of low – Volume Roads. Report N° FHWA – IS – 78 – 205, Pacific Northwest Region Forest Service, US. Departement of Agriculture, Washngton, DC, USA, 172 p.
There are 9 citations in total.

Details

Other ID JA56NE42NS
Journal Section Articles
Authors

Sadok Benmebarek This is me

Mohamed Saddek Remadna This is me

Lamine Belounar This is me

Publication Date July 23, 2016
Published in Issue Year 2013 Volume: 3 Issue: 2

Cite

APA Benmebarek, S., Remadna, M. S., & Belounar, L. (2016). Numerical modeling of reinforced unpaved roads by geogrid. TOJSAT, 3(2), 109-116.
AMA Benmebarek S, Remadna MS, Belounar L. Numerical modeling of reinforced unpaved roads by geogrid. TOJSAT. July 2016;3(2):109-116.
Chicago Benmebarek, Sadok, Mohamed Saddek Remadna, and Lamine Belounar. “Numerical Modeling of Reinforced Unpaved Roads by Geogrid”. TOJSAT 3, no. 2 (July 2016): 109-16.
EndNote Benmebarek S, Remadna MS, Belounar L (July 1, 2016) Numerical modeling of reinforced unpaved roads by geogrid. TOJSAT 3 2 109–116.
IEEE S. Benmebarek, M. S. Remadna, and L. Belounar, “Numerical modeling of reinforced unpaved roads by geogrid”, TOJSAT, vol. 3, no. 2, pp. 109–116, 2016.
ISNAD Benmebarek, Sadok et al. “Numerical Modeling of Reinforced Unpaved Roads by Geogrid”. TOJSAT 3/2 (July 2016), 109-116.
JAMA Benmebarek S, Remadna MS, Belounar L. Numerical modeling of reinforced unpaved roads by geogrid. TOJSAT. 2016;3:109–116.
MLA Benmebarek, Sadok et al. “Numerical Modeling of Reinforced Unpaved Roads by Geogrid”. TOJSAT, vol. 3, no. 2, 2016, pp. 109-16.
Vancouver Benmebarek S, Remadna MS, Belounar L. Numerical modeling of reinforced unpaved roads by geogrid. TOJSAT. 2016;3(2):109-16.