A NUMERICAL MODEL ON GEOSYNTHETIC REINFORCED PILE SUPPORTED EMBANKMENTS

Reinforced pile embankments are started use more commonly because they allow fast construction of highways. When geosynthetics are adopted to piled fills, this kind of structures are then called as geosynthetic reinforced piled structures. When the geosynthetics are used, area of pile caps is reduced because geosynthetic transfers fill load to piles by its membrane effect. In this study, effect of multi – layer reinforcement is investigated using 2D finite element method. For this purpose, settlements, pressures, excess pore water and horizontal displacements are analyzed. Results showed that using two and three layers of reinforcement significantly decreases settlements on foundation soil and embankment surface. Placement of additional layer has great effect on settlements, pressures, excess pore water pressure and horizontal displacements. It is also found out that, two layers of reinforcement is more effective when only settlements are considered.

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  • [1] Terzaghi K. Theoretical Soil Mechanics. Ninth Printing. London, Chapman and Hall, Limitea. New York, John Wiley and Sons, Inc.
  • [2] J. Han and M.A. Gabr. J. Geotech. Geoenviron. Eng. 2002.128:44-53.
  • [3] S.J.M. Van Eekelen, A.Bezuijen, H.J. Lodder, A.F. van Tol. Model experiments on piled embankments. Part 1. Geotextiles and Geomembranes 2012; 32: 69-81.
  • [4] S.J.M. Van Eekelen, A.Bezuijen, H.J. Lodder, A.F. van Tol. Model experiments on piled embankments. Part 1. Geotextiles and Geomembranes 2012; 32: 82-94.
  • [5] A. Bhasi, K. Rajagopal. Numerical study of basal reinforced embankments supported on floating/end bearing piles considering pile – soil interaction. Geotextiles and Geomembranes 2015; 43: 524-536.
  • [6] Han-Jiang Lai, Jun-Jie Zheng, Jun Zhang, Rong-Jun Zhang, Lan Cui. DEM analysis of “soil”-arching within geogrid-reinforced and unreinforced pile-supported embankments. Computers and Geotechnics 2014; 61: 13-23.
  • [7] Haofeng Xing, Zheng Zhang, Huabei Liu, Hua Wei. Large-scale tests of pile-supported earth platform with and without geogrid. Geotextiles and Geomembranes 2014; 42: 586-598.
  • [8] J. Huang, J. Han. Two-dimensional parametric study of geosynthetic-reinforced column-supported embankments by coupled hydraulic and mechanical modeling. Computers and Geotechnics 2010; 37: 638-648.
  • [9] J. Huang, J. Han. 3D coupled mechanical and hydraulic modeling of a geosynthetic-reinforced deep mixed column-supported embankment. Geotextiles and Geomembranes 2009;27: 272-280.
  • [10] Jun Zhang, Jun-Jie Zheng, Bao-Guo Chen, Jien-Hua Yin. Coupled mechanical and hydraulic modeling of a geosynthetic-reinforced and pile-supported embankment. Computers and Geotechnics 2013; 52: 28-37.
  • [11] K.-W. Liu, R. Kerry Rowe. Performance of reinforced, DMM column-supported embankment considering reinforcement viscosity and subsoil’s decreasing hydraulic conductivity. Computers and Geotechnics 2016;71: 147-158.
  • [12] Ling Zhang, Minghua Zhao, Yuxia Hu, Heng Zhao, Bingchu Chen. Semi-analytical solutions for geosynthetic-reinforced and pile-supported embankment. Computers and Geotechnics 2012;44: 167-175.
  • [13] Priyanath Ariyarathne, D.S. Liyanapathirana. Review of existing design methods for geosynthetic-reinforced pile-supported embankments. Soils and Foundations 2015;55(1): 17-34.
  • [14] Weihua Lu, Linchang Miao. A simplified 2-D evaluation method of the arching effect for geosynthetic-reinforced and pile-supported embankments.
  • [15] Balaka Ghosh, Behzad Fatahi, Hadi Khabbaz. Mechanical Model to Analyse Multilayer Geosynthetic Reinforced Granular Layer in Column Supported Embankments. Procedia Engineering 2016;143: 387-394.
  • [16] Julian Lehn, Christian Moormann, Johannes Aschrafi. Numerical Investigations on the Load Distribution over the Geogrid of a Basal Reinforced Piled Embankment under Cyclic Loading. Procedia Engineering 2016;143: 435-444.
  • [17] Suzanne J.M. Van Eekelen. The 2016-update of the Dutch Design Guideline for Basal Reinforced Piled Embankments. Procedia Engineering 2016;143: 582-589.
  • [18] Suzanne J.M. Van Eekelen and Arjan A.M. Venmans. Piled Embankment or a Traditional Sand Construction: How to Decide? A Case Study. Procedia Engineering 2016;143: 590-597.
  • [19] Wan-Huan Zhou, Jun-Yuan Lao, Yisheng Huang, Renpeng Chen. Three-Dimensional Finite Element Modelling of Soil Arching in Pile-Supported Geogrid-Reinforced Embankments. Procedia Engineering 2016;143: 607-614.
  • [20] H.L. Liu, Charles W. W. Ng, K. Fei. Performance of a Geogrid-Reinforced and Pile-Supported Highway Embankment over Soft Clay: Case Study. J. Geotech. Geoenviron. Eng. 2007;133: 1483-1493.
  • [21] Rui, R., van Tol, A. F., Xia, Van Eekelen, S.J.M., Hu, G. Investigation of Soil-Arching Development in Dense Sand by 2D Model Tests. Geotechnical Testing Journal. 2016;36: 415-430.
  • [22] S.J.M. Van Eekelen, A. Bezuijen, A.F. van Tol. Analysis and modification of the British Standard BS8006 for the design of piled embankments. Geotextiles and Geomembranes 2011;29: 345-359.
  • [23] S.J.M. Van Eekelen, A. Bezuijen, H.J. Lodder, A.F. van Tol. Model experiments on piled embankments. Part I. Geotextiles and Geomembranes 2012;32: 69-81.
  • [24] S.J.M. Van Eekelen, A. Bezuijen, H.J. Lodder, A.F. van Tol. Model experiments on piled embankments. Part II. Geotextiles and Geomembranes 2012;32: 82-94.
  • [25] S.J.M. Van Eekelen, A. Bezuijen, A.F. van Tol. Validation of analytical models for the design of basal reinforced piled embankments. Geotextiles and Geomembranes 2015;43: 56-81.
  • [26] Braja M. Das. Principles of Geotechnical Engineering. 7th ed. Stamford, CT, USA: Cengage Learning.
  • [27] Suliman B. A. Mohamed, Kuo Hsin Yang, Wen – Yi Hung. Finite element analysis of two tier geosynthetic – reinforced soil walls: Comparison involving centrifuge tests and limit equilibrium results. Computers and Geotechnics 2014;61: 67-84.
  • [28] Plaxis Material Models Manuel 2016.
  • [29] Stein Sturr. Determination of Soil Stiffness Parameters. Short Course on Computation Geotechnics + Dynamics. Boulder Colorado, January 5-8, 2004.