Evaluating the Performance of Rehabilitated Roadway Base with Geogrid Reinforcement in the Presence of Soil-Geogrid-Interaction

Document Type : Regular Paper

Authors

Faculty of Civil Engineering, Semnan University, Semnan, Iran

Abstract

One of the efficient techniques to improve the behavior of the paved road under traffic loads is implementing the geosynthetic material in the sub-base or the soil under the road. In the past years, many researches have been done about this topic, but the study on the effect of soil/load conditions on the performance of the rehabilitated paved road by geogrid in order to investigate the effective parameters on it is still open. In this paper a series of 2D FEM models using the software PLAXIS-2D are carried out to evaluate the effects of soil/load conditions which includes the effect of the subgrade material and load properties (such as modulus of elasticity, Poisson's ratio, drainage conditions, shear strength and the area of load), in the presence of soil-geogrid-interaction. The results showed that the use of a geogrid reinforcement layer decreases the vertical settlement in a soft subgrade surface, and this indicates that the main mechanism of the geogrid is to restrain soils from lateral displacement through interlocking with the particles. In addition, it is concluded that increasing the Poisson's ratio of the subgrade leads to reducing the vertical settlement and increasing the value of modulus elasticity leads to decrease of the vertical displacement, it is also shown that with increasing un-drained shear strength, vertical deflection has also decreased.

Keywords

Main Subjects


[1] Borges, J.L.,Cardoso, A.S.(2001). “Structural behaviour and parametric study of reinforced embankments on soft clays.” Computers and Geotechnics,Vol.28, Issue 3,pp. 209-233.
[2] Daud, N.N.,  Yusoff, Z  and  Muhammed, A.(2015). “Ground Improvement of Problematic Soft Soils Using Shredded Waste Tyre.”The Sixth Jordanian International Civil Engineering Conference (JICEC06).
[3] Gu, J.(2011). “Computational modeling of geogrid reinforced soil foundation and geogrid reinforced base in flexible pavement.” A Dissertation Submitted to the Graduate Faculty of the Louisiana State University and Agricultural and Mechanical College in partial fulfillment of the requirements for the degree of Doctor of Philosophy, Hebei University of Technology.
[4] Kazimierowicz-Frankowska, K.(2007). “ Influence of geosynthetic reinforcement on the load-settlement characteristics of two-layer subgrade.” Geotextiles and Geomembranes, Vol.25, Issue 6,pp. 366-376.
[5] Zornberg, J., Gupta, R.(2010).“Geosynthetics in pavements: North American contributions.” in Theme Speaker Lecture, Proceedings of the 9th International Conference on Geosynthetics, Guarujá, Brazil.Vol.1,pp.379-400.
[6] Hufenus, R.,Rueegger,R .,Banjac,R., Mayor, P.,Springman, S.M.,Bronnimann,R.(2006). “ Full-scale field tests on geosynthetic reinforced unpaved roads on soft subgrade.” Geotextiles and Geomembranes.Vol. 24,Issue1,pp. 21-37.
[7] Jenner, C. and Paul.J .(2000). “ Lessons learned from 20 years experience of geosynthetic reinforcement on pavement foundations.” Proceedings of the 2nd European Geosynthetics Conference. Vol.1: Mercer Lecture, Keynote Lectures, Geotechnical Applications. 
[8] Perkins, S.W., Ismeik,M and Fogelsong, M.(1999). “ Influence of geosynthetic placement position on the performance of reinforced flexible pavement systems.” Conference:Geosynthetics '99: Specifying Geosynthetics and Developing Design Details, Vol. 1.
[9] Moghaddas-Nejad, F. and Small, J.(2003). “ Resilient and Permanent Characteristics of Reinforced Granular Materials by Repeated Load Triaxial Tests.” Geotechnical Testing Journal, Vol. 26, No. 2, pp. 152-166, https://doi.org/10.1520/GTJ11324J. ISSN 0149-6115.
[10] Perkins, S.W.,Cheristopher, B.,Eli L,C.(2004).“Development of design methods for geosynthetic reinforced flexible pavements.” Final report prepared for the US Department of Transportation Federal Highway Administration, Washington, DC, FHWA Report Reference Number DTFH61-01-X-00068.
[11] Perkins, S.W., Svanø, G.(2006). “Assessment of Interface Shear Growth from Measured Geosynthetic Strains in a Reinforced Pavement Subject to Repeated Loads.” Eighth International Conference on Geosynthetics,  J. Kuwano and J. Koseki eds., Vol.3, pp. 813-816, Yokohama, Japan.
[12] Nair, A.M., Latha. G.M. (2014).“Large Diameter Triaxial Tests on Geosynthetic-Reinforced Granular Subbases. Journal of Materials in Civil Engineering.” Vol. 27,Issue 4, DOI: http://dx.doi.org/10.1061/(ASCE)MT.1943-5533.0001088
[13] Nazzal,M.(2007).“Laboratory characterization and numerical modeling of geogrid reinforced bases in flexible pavements.” Ph. D. Dissertation, Louisiana State University, Baton Rouge, LA.
[14] Al-Qadi, I., Dessouky, S.H.,Kwon, J and Tutumluer, E.(2008). “Geogrid in flexible pavements: validated mechanism.”Transportation Research Record: Journal of the Transportation Research Board, Issue 2045,pp. 102-109. http://dx.doi.org/10.3141/2045-12.
[15] Henry,K.S.,William,D.,Joshua,C.,Humphrey,D and Barna,L.(2009).“Structural improvements of flexible pavements using geosynthetics for base course reinforcement.” Final Report, ERDC/CRREL TR-09-11, DTIC Document.
[16] Pasquini, E., Bocci,M.,Ferroti, G and Canestrari, F. (2013).“Laboratory characterisation and field validation of geogrid-reinforced asphalt pavements.”Journal Road Materials and Pavement Design. Vol.14, Issue 1, pp. 17-35.
[17] Chan, F., Barksdale, R.D. and Brown, S.F. (1989).“Aggregate base reinforcement of surfaced pavements.” Journal of the Geotextiles and Geomembranes.Vol. 8, Issue 3, pp. 165-189. https://doi.org/10.1016/0266-1144(89)90002-2.
[18] Miura, N.,Sakai, A and Taesiri,Y.(1990). “Polymer grid reinforced pavement on soft clay grounds.” Journal Geotextiles and Geomembranes. Volume 9, Issue 1: pp. 99-123.
[19] Wathugala, G., Huang, B and Pal,S.(1996). “ Numerical simulation of geosynthetic-reinforced flexible pavements.”Transportation Research Record: Journal of the Transportation Research Board,  Volume 1534 ,DOI: 10.3141/1534-09. pp. 58-65.
[20] Leng, J., Gabr, M.(2005). “ Numerical analysis of stress–deformation response in reinforced unpaved road sections.”Journal of the Geosynthetics International .Volume12,Issue2: pp. 111-119. DOI: 10.1680/gein.12.2.111.61187.
[21] Kwon, J.,Tutumluer,E and Kim,M.(2005). “ Development of a mechanistic model for geosynthetic-reinforced flexible pavements.”Journal of the Geosynthetics International.Volume 12,Issue 6: pp. 310-320. DOI: 10.1680/gein.2005.12.6.310.
[22] Siriwardane, H., Gondle, R and Kutuk, B.(2010). “ Analysis of flexible pavements reinforced with geogrids.” Journal of the Geotechnical and Geological Engineering. Volume 28, Issue 3: pp. 287-297.
[23] Nazzal, M.D., Abu-Farsakh, M.Y. and Mohammad,L.N.(2010). “ Implementation of a critical state two-surface model to evaluate the response of geosynthetic reinforced pavements.” International Journal of Geomechanics. Volume 10, Issue 5: pp. 202-212.
[24] Benmebarek, S., Remadna, M.S. and Belounar, L.(2013). “ Numerical modeling of reinforced unpaved roads by geogrid.” The Online Journal of Science and Technology. Volume 3,Issue 2,pp,109-115.
[25] Hussein, M.G.,Meguid, M.A.(2013). “Three-Dimensional Finite Element Analysis of Soil-Geogrid Interaction under Pull-out Loading Condition.” in Geo Montreal, S, Montreal, Quebec.
[26] Huang, W.C.(2014). “ Improvement evaluation of subgrade layer under geogrid-reinforced aggregate layer by finite element method.” International Journal of Civil Engineering. Volume 12, Issue 3: pp. 204-215.
[27] Palmeira, E.M.(2009). “Soil–geosynthetic interaction: Modelling and analysis.” Geotextiles and Geomembranes. Vol. 27,Issue 5, pp. 368-390.
[28] Khaji, N. and Khodakarami, M.(2012). “A semi-analytical method with a system of decoupled ordinary differential equations for three-dimensional elastostatic problems.” International Journal of Solids and Structures. Vol. 49,Issue 18,pp. 2528-2546.
[29] Khodakarami, M. and Khaji, N.(2011). “Analysis of elastostatic problems using a semi-analytical method with diagonal coefficient matrices. Engineering Analysis with Boundary Elements.” Vol. 35,Issue 12,pp. 1288-1296.
[30] Khodakarami, M. and Khaji,N.(2014). “ Wave propagation in semi-infinite media with topographical irregularities using Decoupled Equations Method.” Soil Dynamics and Earthquake Engineering.  65,pp.102-112. http://dx.doi.org/10.1016/j.soildyn.2014.06.006.
[31] Khodakarami, M., Khaji, N and Ahmadi, M.(2012). “Modeling transient elastodynamic problems using a novel semi-analytical method yielding decoupled partial differential equations.” Computer Methods in Applied Mechanics and Engineering. Volumes 213–216,  pp. 183–195, http://dx.doi.org/10.1016/j.cma.2011.11.016.
[32] Mirzajani, M., Khaji, N and M. Khodakarami, M.I.(2015). “A new global nonreflecting boundary condition with diagonal coefficient matrices for analysis of unbounded media.” Applied Mathematical Modelling.Vol.40,Issue4,pp.2845–2874. http://dx.doi.org/10.1016/j.apm.2015.09.083.
[33] Moayedi, H., Kazemian,S., Prasad, A and Huat.K.B.B. (2009). “ Effect of geogrid reinforcement location in paved road improvement.” Electronic Journal of Geotechnical Engineering. 14,pp.1-11.
[34] PLAXIS. Reference manual, 2D – version 9.0, PLAXIS. Delft, Netherlands: Delft University of Technology; 2008.