Performance of Geosynthetic-Reinforced Soils Under Static and Cyclic Loading

M. Touahmia

Abstract


This paper investigates and discusses the composite behavior of geosynthetic reinforced soil mass. It presents the results of a series of large-scale laboratory tests supported by analytical methods to examine the performance of geogrid reinforcement subjected to static and cyclic pullout loading. The testing equipment and procedures used for this investigation are outlined. The results show that geosynthetic reinforcement can mobilize great resistance to static pulling load under high confining pressures. The reinforcement exhibits gradual deformation under cyclic loading showing no sign of imminent pullout failure for all levels of applied loads. In general, the results demonstrate that geosynthetic can be used in situations where loads are non-static, although care will be required in ensuring that appropriate factors of safety are applied to control the resulting deformation. A simplified analytical model for calculating the pulling capacity of geosynthetic reinforcement is proposed.


Keywords


geosynthetics; reinforced soil; geogrid; static loading; cyclic loading

Full Text:

PDF

References


M. B. Hossain, M. Z. Hossain, T. Sakai, “Interaction properties of geosynthetic with different backfill soils”, International Journal of Geosciences, Vol. 3, No. 5, pp. 1033-1039, 2012

J. P. Giroud, “Quantification of geosynthetic behavior”, Geosynthetics International, Vol. 12, No. 1, pp. 2-27, 2015

E. M. Palmeira, “Soil–geosynthetic interaction: modelling and analysis”, Geotextiles and Geomembranes,Vol. 27, No. 5, pp. 368-390, 2009

J. G. Zornberg, D. Leshchinsky, “Comparison of international design criteria for geosynthetic-reinforced soil structures” in Landmarks in Earth Reinforcement, Ochiai et al. (Eds), Vol. 2, pp. 1095-1106, 2003

K. H. Yang, P. Utomo, T. L. Liu, “Evaluation of force-equilibrium and deformation based design approaches for predicting reinforcement loads within geosynthetic reinforced soil structures”, Journal of GeoEngineering, Vol. 8, No. 2, pp. 41-54, 2013

M. P. Pinho-Lopes, A. M. Paula, M. L. Lopes, “Soil–geosynthetic interaction in pullout and inclined-plane shear for two geosynthetics exhumed after installation damage”, Geosynthetics International, Vol. 23, No. 5, pp. 331-347, 2016

A. McGown, “The behaviour of geosynthetic reinforced soil systems in various geotechnical applications”, 2nd European Conference on Geosynthetics, EuroGeo 2000, Bologna, Italy, 1, pp. 3-26, 2000

R. A. Jewell, G. W. E. Milligan, R. W. Sarsby, D. Dubois, “Interaction between soil and geogrids”, in Polymer Grid Reinforcement, Thomson Telford Limited, London, UK, pp. 18-30, 1984

M. J. I. Alam, S. R. Lo, M. R. Karim, “Pull-out behaviour of steel grid soil reinforcement embedded in silty sand”, Computers and Geotechnics, Vol. 56, pp. 216-226, 2014




eISSN: 1792-8036     pISSN: 2241-4487