Retracted: Influence of Track Support Stiffness of Railway Tracks on Track Impact Factor
This article has been corrected.
VIEW CORRECTIONPublication: Journal of Engineering Mechanics
Volume 140, Issue 8
Abstract
Track support stiffness (TSS) is used as a quality index of railway tracks to assess their performance and bearing capacity. TSS depends on the elastic stiffness of the elastic materials and the structural characteristics of the track system. The theoretically designed track impact factor (TIF), which is used to design ballasted and slab tracks in the Republic of Korea, is not detailed enough to describe various track types and TSS. In this study, the relationship between the TSS and the TIF for various types of tracks currently employed in Korean urban transit was assessed by performing field tests using actual vehicles running along the service lines. Field tests were performed on ballasted tracks (with good and bad ballast conditions) and three slab track types (i.e., sleeper-embedded track, rail floating track, and sleeper floating track). The theoretically designed TIF and TSS were compared with the corresponding TIF and TSS measured through field tests for the various track types on the service line. The condition of ballast (gravel) and the spring stiffness of the rail support materials directly affected the TSS. Moreover, the TIF for the service line appeared to increase with the TSS; therefore, it was inferred that the TSS directly affected the TIF.
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Acknowledgments
The writers express sincere appreciation to Seoul Metro and Shinbundang Railroad Co., Ltd. (DX LINE), for providing financial support for this project.
References
American Railway Engineering and Maintenance-of-Way Association (AREMA). (2012). Manual for railway engineering, American Railway Engineering and Maintenance of Way Association, Lanham, MD.
Berggren, E. G., Kaynia, A. M., and Dehlbom, B. (2010). “Identification of substructure properties of railway tracks by dynamic stiffness measurements and simulations.” J. Sound Vib., 329(19), 3999–4016.
Choi, J. (2013). “Influence of track support stiffness of ballasted track on dynamic wheel-rail forces.” J. Transp. Eng., 709–718.
Choi, J., Park, Y., and Lee, S. (2011). “The evaluation of track impact factor on the various track type in urban transit.” J. Korean Soc. Railway, 14(3), 248–255 (in Korean).
Esveld, C. (2001). Modern railway track, 2nd Ed., MRT Productions, Zaltbommel, Netherlands.
Graduate School of Railway, Seoul National University of Science and Technology. (2009). A study on the maintenance and estimate of fatigue life for used rail. Seoul Metro, Seoul (in Korean).
Gu, G., and Choi, J. (2013). “The dynamic response of rail support.” Veh. Syst. Dyn., 51(6), 798–820.
Korean Agency for Technology and Standards. (2010). “Standard test method for sieve analysis of fine and coarse aggregates.” KS F 2502, 5610–1058 A, Gwacheon, Korea.
Indraratna, B., and Salim, W. (2005). Mechanics of ballasted rail tracks: A geotechnical perspective, Taylor & Francis, London.
International Union of Railways. (1965). “Office for Research and Experiments, question D71, stresses in the track, ballast and formation as a result of rolling loads, stresses in rails, Part 2: Calibration and measuring procedures.” Rep. No.1, Utrecht, Netherlands.
Knothe, K., and Grassie, S. L. (1993). “Modelling of railway track and vehicle/track interaction at high frequencies.” Veh. Syst. Dyn., 22(3–4), 209–262.
Korea Rail Network Authority. (2011). “Railway design standard (track part).” Seoul (in Korean).
Lee, D., Park, Y., and Choi, J. (2011). “A study on the evaluation of track support stiffness on the various track type in urban transit.” J. Korean Soc. Railway, 14(3), 262–270 (in Korean).
Lichtberger, B. (2010). Track compendium, Eurail Press, Hamburg, Germany.
Origin 7.5 [Computer software]. Northampton, MA, OriginLab.
Na, S. H., Suh, S. B., Son, K. J., and Kim, J. H. (2001). “Experimental study on the variation of track stiffness between earthwork and bridge.” Proc., Korean Society for Railway Autumn Conf., Korean Society for Railway, 281–288 (in Korean).
Naudé, F. P. (2005). “Development of a methodology for calculating stresses in track components.” Master of Engineering (Mech.) thesis, Univ. of Pretoria, Pretoria, South Africa.
Naudé, F. P., Frohling, R. D., and Theron, N. J. (2005). “Development of a methodology to calculate stresses in track components.” J. Rail Rapid Transit, 219(4), 213–224.
Öberg, J. (2006). “Track deterioration of ballasted tracks-Marginal cost models for different railway vehicles.” TRITA AVE 2006:88 Rep., Division of Rail Vehicles, Dept. of Aeronautical and Vehicle Engineering, Royal Institute of Technology, KTH, Stockholm, Sweden, 8–10.
Rail Safety & Standards Board. (2005). “Review of the effect of track stiffness on track performance.” Evergreen House, London.
Railway Technical Research Institute (RTRI). (1997). Design standard and manual for railway structure, track structure (ballasted track), Railway Technical Research Institute, Tokyo (in Japanese).
Sato, Y. (1995). “Japanese studies on deterioration of ballasted track.” Veh. Syst. Dyn., 24(Suppl 1), 197–208.
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© 2014 American Society of Civil Engineers.
History
Received: Apr 11, 2013
Accepted: Oct 29, 2013
Published online: Oct 31, 2013
Discussion open until: Jul 7, 2014
Published in print: Aug 1, 2014
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