Recommendations for Numerical Rail Substructure Modeling Considering Nonlinear Elastic Behavior
Publication: Journal of Transportation Engineering
Volume 139, Issue 8
Abstract
This paper considers the problem of modeling railway track substructure. The most commonly used methodology for designing the railway substructure cross section does not considerably differ from that proposed in the 1980s. For the bearing capacity of the subgrade, the currently used design methodology implicitly meets one objective: the stresses transmitted to the subgrade must be compatible with its bearing capacity. The bearing capacity depends on the qualities and thicknesses of the soils that compose the subgrade, from the formation layer to the lower layers. In addition, railway administrations have included additional recommendations based on their experience. During the last decade, finite-element models (FEM) have been shown to be a very useful tool for designing cross sections. These models are often very complex and require a very high computational time to be solved. To reduce this complexity and computational time while remaining faithful to the reality to be modeled, this paper proposes some recommendations to develop a parameterized numerical model in three dimensions within the elastic nonlinear range under the static load of a given railway section. To adequately reproduce the real behavior of materials (elastoplastic) and the contact surfaces between very different materials adequately, artifices to use the model in the elastic range are propsed. In addition, the goodness of this design is analyzed using multilayer numerical models. This model may be a very useful tool for analyzing the behavior of different types of railway cross sections.
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Acknowledgments
The authors acknowledge the collaboration of Javier Moreno and Vicente Cuellar from the Geotechnical Laboratory of CEDEX. Their assistance has been critical for the proper execution of this research.
References
ANSYS 12.0 [Computer software]. Canonsburg, PA, Ansys.
Banimahad, M., and Woodward, P. (2007). “Numerical study of train speed effect on railway track response.” 9th Int. Railway Engineering Conf. (CD-ROM), London, UK.
Chaves, E. (2012). Notes on continuum mechanics, Sprinter/CIMNE, Spain.
Comité D-177 (ORE). (1983a). “Adaptation optimale de la voie classique au trafic de l’avenir.”, Comportement des Structures d’Assise de la Voie sous Charges Repetees, Office de Recherches et d’Essais de l’Union Internationale des Chemins de Fer (in French).
Comité D-177 (ORE). (1983b). “Adaptation optimale de la voie classique au trafic de l’avenir.”, Abaques de Comportement du Systeme Voie/Fondation, Office de Recherches et d’Essais de l’Union Internationale des Chemins de Fer (in French).
Esveld, C. (2001). Modern railway track, 2nd Ed., MRT-Productions, The Netherlands.
Gallego, I. (2006). “Heterogeneidad resistente de las vías de Alta Velocidad: Transición terraplén-estructura.” Ph.D. thesis, Dept. of Civil Engineering, University of Castilla la Mancha, Ciudad Real, Spain, 14–15 (in Spanish).
Gallego, I., and López, A. (2009). “Numerical simulation of embankment-structure transition design.” J. Rai Rapid Transit, 223(4), 331–342.
Gallego, I., López, A., Vieira, E. W., and Rivas, A. (2012). “Design of embankment-structure transitions for railway infrastructure.” Proc. ICE Transp., 165(1), 27–37.
Gallego, I., Muñoz, J., Rivas, A., and Sanchez-Cambronero, S. (2011). “Vertical track stiffness as a new parameter involved in designing high-speed railway infrastructure.” J. Transp. Eng., 137(12), 971–979.
Gonzalez, P., Cuadrado, M., and Romo, E. (2001). “Small structures built in embankments of high speed railway lines. variation of the overall track rigidity and design recomentations.” World Congress on Railway Research, Colonia, Germany.
López, A. (1976). “La distribucion de tensiones en la capa de balasto y la determinacion del espesor necesario.” Revista AIT, 11(1), 66–77 (in Spanish).
López, A. (2006). Infraestructuras ferroviarias, Ediciones UPC, Barcelona (in Spanish).
Ministerio de Fomento. (1999). “Recomendaciones para el proyecto de plataformasferroviarias.” Servicio de Publicaciones del Ministerio de Fomento, Spanish Ministry of Development, Madrid (in Spanish).
Nielsen, J., and Oscarsson, J. (2004). “Simulation of dynamic train–track interaction with state-dependent track properties.” J. Sound Vib., 275(3), 515–532.
Popp, K., Kruse, H., and Kaiser, I. (1999). “Vehicle-track dynamics in the mid-frequency range.” Veh. Syst. Dyn., 31(5–6), 423–464.
Poulos, H., and Davis, E. (1991). Elastic Solution for soil and rock mechanics, Center for Geotechnical Research, Univ.of Sydney, Sydney.
Profilidis, V. (1983). “La voie et la fondation modelisation mathematique.” Ph.D. thesis, École Nationale des Ponts et Chaussées, Paris (in French).
Profilidis, V., and Humbert, P. (1986). “Étude en élastoplasticité par la mef du comportament de la voie ferrée et de sa fondation.” Bull. Liaison du LCPC, 141 (in French).
Proud’Homme, M. (1970). “La voie.” Revue Générales de Chemiins de Fer, 1(1), 56–72 (in French).
Sauvage, G., and Larible, G. (1982). “La modelisation par elements finis des cauches d’assise de la voie ferrée.” Revue Générale des Chemins de Fer, 9(1), 475–484 (in French).
Shahu, J., Rao, N., and Yudhbir, P. (1999). “Parametric study of resilient response of traces with a sub-ballast layer.” Can. Geotech. J., 36(6), 1137–1150.
UIC 719R. (2006). Earthworks and track bed for railway lines, 3rd Ed., Union Internationale de Chemins de Fer, Paris.
Woodward, P., Zettor, B., Kaddouri, A., and Banimahd, M. (2005). “Advanced non-linear dynamic finite element modelling of railway track behaviour.” Proc., 8th Int. Conf. on Railway Engineering (CD-ROM), London, UK.
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Published In
Journal of Transportation Engineering
Volume 139 • Issue 8 • August 2013
Pages: 848 - 858
Copyright
© 2013 American Society of Civil Engineers.
History
Received: Oct 25, 2012
Accepted: Mar 14, 2013
Published online: Mar 16, 2013
Published in print: Aug 1, 2013
Discussion open until: Aug 16, 2013
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