DOI QR코드

DOI QR Code

The effectiveness of geosynthetic reinforcement, tamping, and stoneblowing of railtrack ballast beds under dynamic loading: DEM analysis

  • Lobo-Guerrero, Sebastian (American Geotechnical & Environmental Services, Inc.) ;
  • Vallejo, Luis E. (Department of Civil and Environmental Engineering, University of Pittsburgh)
  • 투고 : 2010.03.16
  • 심사 : 2010.08.11
  • 발행 : 2010.09.25

초록

Discrete Element Method (DEM) simulations were developed to investigate the effectiveness of geosynthetic reinforcement and the effectiveness of maintenance techniques performed on a simulated ballast bed subjected to dynamic loading. The results from four samples subjected each one to a total of 425 load cycles are presented: one unreinforced and unmaintained sample, one unmaintained but reinforced sample, one unreinforced sample subjected to maintenance in the form of stoneblowing after 200 load cycles, and one unreinforced sample subjected to maintenance in the form of tamping after 200 load cycles. The obtained values of permanent deformation as a function of the applied number of load cycles for the four cases are presented together allowing a comparison of the effectiveness of each technique. Moreover, snapshots of the simulated track sections are presented at different moments of the simulations. The simulations indicated that the geosynthetic reinforcement may not be beneficial for the analyzed case while stoneblowing was the most effective maintenance technique.

키워드

참고문헌

  1. Anderson, W.F. and Key, A.J. (2000), "Model testing of two-layer railway track ballast", J. Geotech. Geoenviron. Eng. - ASCE, 126(4), 317-323. https://doi.org/10.1061/(ASCE)1090-0241(2000)126:4(317)
  2. Bertrand, D., Nicot, F., Gotteland, P. and Lambert, S. (2005), "Modelling a geo-composite cell using discrete analysis", Comput. Geotech., 32, 564-577. https://doi.org/10.1016/j.compgeo.2005.11.004
  3. Chareyre, B. and Villard, P. (2005), "Dynamic spar elements and discrete element methods in two dimensions for the modeling of soil-inclusion problems", J. Eng. Mech. - ASCE, 31(7), 689-698.
  4. CP Rail Specification for Ballast (1987), Appendix of the transportation research record, 1131, 59-63.
  5. Cundall, P.A. and Strack, O.D.L. (1979), "A discrete numerical model for granular assemblies", Geotechnique, 29(1), 47-65. https://doi.org/10.1680/geot.1979.29.1.47
  6. Indraratna, B., Ionescu, D. and Christie, H.D. (1998), "Shear behavior of railway ballast based on large-scale triaxial tests", J. Geotech. Geoenviron. Eng. - ASCE, 124(5), 439-449. https://doi.org/10.1061/(ASCE)1090-0241(1998)124:5(439)
  7. Indraratna, B., Khabbaz, H., Salim, W. and Christie, D. (2006), "Geotechnical properties of ballast and the role of geosynthetics in rail track stabilization", Ground Improvement, 10(3), 91-101. https://doi.org/10.1680/grim.2006.10.3.91
  8. Itasca Consulting Group, Inc. (2002), PFC2D (Particle Flow Code in Two Dimensions) version 3.0; sections: Theory and Background; FISH in PFC.
  9. Klassen, M.J., Clifton, A.W. and Watters, B.R. (1987), "Track evaluation and ballast performance specifications", Transport. Res. Record, 1131, 35-44.
  10. Lim, W.L. and McDowell, G.R. (2005), "Discrete element modelling of railway ballast", Granular Matter, 7, 19- 29. https://doi.org/10.1007/s10035-004-0189-3
  11. Lobo-Guerrero, S. and Vallejo, L.E. (2005a), "Crushing a weak granular material: experimental numerical analyses", Geotechnique, 55(3), 245-249. https://doi.org/10.1680/geot.2005.55.3.245
  12. Lobo-Guerrero, S. and Vallejo, L.E. (2005b), "Analysis of crushing of granular material under isotropic and biaxial stress conditions", Soils Found., 45(4), 79-87.
  13. Lobo-Guerrero, S. and Vallejo, L.E. (2005c), "Discrete element method evaluation of granular crushing under direct shear test conditions", J. Geotech. Geoenviron. Eng. - ASCE, 131(10), 1295-1300. https://doi.org/10.1061/(ASCE)1090-0241(2005)131:10(1295)
  14. Lobo-Guerrero, S. and Vallejo, L.E. (2005d), "DEM analysis of crushing around driven piles in granular materials", Geotechnique, 55(8), 617-623. https://doi.org/10.1680/geot.2005.55.8.617
  15. Lobo-Guerrero, S. and Vallejo, L.E. (2006a), "Discrete element method analysis of railtrack ballast degradation during cyclic loading", Granular Matter, 8(3-4), 195-204. https://doi.org/10.1007/s10035-006-0006-2
  16. Lobo-Guerrero, S. and Vallejo, L.E. (2006b), "Modeling granular crushing in ring shear tests: experimental and numerical analyses", Soils Found., 46(2), 39-49. https://doi.org/10.3208/sandf.46.39
  17. McDowell, G.R., Buchanan, J. and Lim, W.L. (2004), "Performance of ballast mixtures", Ground Eng., 37(10), 28-31.
  18. McDowell, G.R. and Stickley, P. (2006), "Performance of geogrid-reinforced ballast", Ground Eng., 39(1), 26-30.
  19. McMichael, P. and McNaughton, A. (2003), The stoneblower - delivering the promise; development, testing and operation of a new track maintenance system, TRB 2003 Annual Meeting, CD-ROM.
  20. Mittal, S., Sharma, A.K., Lokesh, B.V. and Dwivedi, A. (2009), "Study of behaviour of ballast using geosynthetics", Proceedings of the 4th Asian Regional Conference of Geosynthetics, Shangai, China. Li, G., Chen, Y., and Tang, X., Editors, 656-661.
  21. Pintner, R.M., Vinson, T.S. and Johnson E.G. (1987), "Nature of fines produced in aggregate processing", J. Cold Reg. Eng., 1(1), 10-21. https://doi.org/10.1061/(ASCE)0887-381X(1987)1:1(10)
  22. Raymond, G.P. and Bathurst, R.J. (1987), "Performance of large-scale model single tie-ballast systems", Transport. Res. Record, 1131, 7-14.
  23. Raymond, G.P. (2000), "Track and support rehabilitation for a mine company railroad", Can. Geotech. J., 37, 318- 332. https://doi.org/10.1139/t99-108
  24. Szymoniak, T. (1986), Reliability of the Dimethyl sulfoxide (DMSO) Accelerated Weathering Test to Predict the Degradation Characteristics of Basaltic Road Aggregates, M.S. Dissertation, Department of Civil and Environmental Engineering, Oregon State University, Corvallis, Oregon.
  25. Tannant, D.D. and Wang, C. (2004), "Thin tunnel liners modeled with particle flow code", Eng. Computation., 21(2/3/4), 318-342. https://doi.org/10.1108/02644400410519811
  26. Vallejo, L.E. and Chik, Z. (2009), "Fractal and laboratory analyses of the crushing and abrasion of granular materials", Geomech. Eng., 1(4), 323-335. https://doi.org/10.12989/gae.2009.1.4.323
  27. Villard, P. and Chareyre, B. (2004), "Design methods for geosynthetic anchor trenches on the basis of true scale experiments and discrete element modelling", Can. Geotech. J., 41, 1193-1205. https://doi.org/10.1139/t04-063

피인용 문헌

  1. Micromechanics-Based Investigation of Fouled Ballast Using Large-Scale Triaxial Tests and Discrete Element Modeling vol.143, pp.2, 2017, https://doi.org/10.1061/(ASCE)GT.1943-5606.0001587
  2. Experimental and Discrete Element Modeling of Geocell-Stabilized Subballast Subjected to Cyclic Loading vol.142, pp.4, 2016, https://doi.org/10.1061/(ASCE)GT.1943-5606.0001431
  3. Numerical investigation of geocell reinforced slopes behavior by considering geocell geometry effect vol.24, pp.6, 2010, https://doi.org/10.12989/gae.2021.24.6.589