Effect of geosynthetic reinforcement creep on the long term performance of an embankment

Karim, M.R. and Gnanendran, C.T. and Lo, S.C.R. (2012) Effect of geosynthetic reinforcement creep on the long term performance of an embankment. In: GeoCongress 2012: State of the Art and Practice in Geotechnical Engineering, 2012, Oakland, CA.

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Abstract

Geo-synthetic reinforcements are often used to enhance the stability of geotechnical structures such as embankments. These geosynthetic polymers often show significant creep deformational behaviour. In the short-term performance of a geotechnical structure, it may not play a significant role. However, while dealing with the long term behaviour, it is necessary to investigate its effect. In this paper two plane strain fully coupled finite element analysis have been conducted; one with and the other without taking into account of the creep behaviour of geosynthetics. A well documented field case of Leneghans embankment (Geogrid improved wide embankment constructed near Sydney, Australia in 1990s) have been used for this purpose. It is evident from the analyses that though the geosynthetic reinforcements may play a vital role in the performance/stability of an embankment in the early days (during and after construction), its contribution may become insignificant with time and the creep of geo-synthetic may not play a significant role in the long term stability.

Item Type: Conference or Workshop Item (Paper)
Additional Information: Conference code: 100952 Export Date: 16 December 2013 Source: Scopus CODEN: GSPUE doi: 10.1061/9780784412121.137 Language of Original Document: English Correspondence Address: School of Engineering and Information Technology, UNSWatADFA, ACT- 2600, Australia References: Chai, J.-C., Miura, N., Performance of embankments with and without reinforcement on soft subsoil (2002) Canadian Geotechnical Journal, 39, pp. 838-848; Duncan, J.M., Chang, C.-Y., Nonlinear analysis of stress and strain in soils (1970) Soil Mechanics and Foundation Division, Proceedings of ASCE 96(SM5, pp. 1629-1653; Hird, C.C., Pyrah, I.C., Finite element modelling of vertical drains beneath embankments on soft ground (1992) Geotechnique, 42 (3), pp. 499-511; Karim, M.R., Gnanendran, C.T., Predicting the long-term performance of a wide embankment on soft soil using an elastic-visco-plastic model (2010) Canadian Geotechnical Journal, 47, pp. 244-257; Karim, M.R., Manivannan, G., Predicting the long-term performance of a geogrid-reinforced embankment on soft soil using two-dimensional finite element analysis (2011) Canadian Geotechnical Journal, 48 (5), pp. 741-753; Kutter, B.L., Sathialingam, N., Elastic-viscoplastic modelling of the ratedependent behaviour of clays (1992) Geotechnique, 42, pp. 427-441; Li, A.L., Rowe, R.K., Effects of viscous behavior of geosynthetic reinforcement and foundation soils on the performance of reinforced embankments (2008) Geotextile and Geomembranes, 26, pp. 317-334; Lo, S.R., Mak, J., Long-term performance of a wide embankment on soft clay improved with prefabricated vertical drains (2008) Canadian Geotechnical Journal, 45, pp. 1073-1091; Perkins, S.W., Constitutive modeling of geosynthetics (2000) Geotextile and Geomembranes, 18, pp. 273-292; Taylor, D.W., Research on consolidation of clays (1942) Cambridge, Massachuesetts, Department of Civil and Sanitary Engineering, Massachusetts Institute of Technology, , Serial 85: serial 85; Voskamp, W., Vliet, F.V., Variation in creep rate at constant loading of PET geogrid strapping (2001) Landmarks in Earth Reinforcement. A. A. Balkema and Lisse., 1, pp. 159-164; Yeo, S.-S., Evaluation of creep behavior of high density polyethylene and polyethyelene-terephthalate geogrids (2010) Geotextile and Geomembranes, 28, pp. 409-421; Zhang, C., Moore, I.D., Nonlinear mechanical response of high density polyethylene. Part I: Experimental investigation and model evaluation (1997) Polymer Engineering and Sciences, 37 (2), pp. 404-413 Sponsors: The Geo-Institute of the American Society of Civil Engineers
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Engineering
Depositing User: Mr Jenal S
Date Deposited: 20 Mar 2014 02:28
Last Modified: 20 Mar 2014 02:28
URI: http://eprints.um.edu.my/id/eprint/8777

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