Browse > Article
http://dx.doi.org/10.7782/JKSR.2015.18.3.241

Optimal Section of Ballasted Asphalt Track Considering Design Lifetime and Economic Feasibility  

Lee, Seonghyeok (High-Speed Railroad Systems Research Center, Korea Railroad Research Institute)
Lee, Jinwook (High-Speed Railroad Systems Research Center, Korea Railroad Research Institute)
Lee, Hyunmin (High-Speed Railroad Systems Research Center, Korea Railroad Research Institute)
Publication Information
Journal of the Korean Society for Railway / v.18, no.3, 2015 , pp. 241-251 More about this Journal
Abstract
Compared with ballasted track (BT), ballasted asphalt track (BAT) has been increasingly adopted in many countries due to its more greatly reduced reinforced roadbed thickness and smaller cumulative plastic deformation, and its advantages in terms of maintenance. In this respect, the authors' previous research includes analysis of BAT sections that show performance similar to that of BT sections of the present specifications; reliability verification of the analysis results through real-sized static and dynamic train-load tests were performed. Based on previous research, this paper estimates the track lifetime using the strain of the lower roadbed according to reinforced roadbed thickness; using probabilistic LCC analysis, this paper presents a BAT section that satisfies the design lifetime and that has performance similar to or higher than that of BT.
Keywords
Ballasted Asphalt Track; Tension Strain; Design Life; Asphalt Concrete Roadbed; LCC Analysis;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 S.H. Lee, J.W. Lee, Y.J. Lim (2013) Development of asphalt track system suited to speed-up, The Magazine of the Korean Society of Civil Engineers, 61(11), pp.10-17.
2 Railway Technical Research Institute (2007) Design standards for railway structures and commentary earth structures, Railway technical research institute.
3 Korea Railway Research Institute (2012) Development of asphalt roadbed and track system suited to speed-up, Korea Railway Research Institute.
4 P.F. Teixeira, P.A. Ferreira, A. Lopez Pita, C. Casas, et al. (2009) The use of bituminous subballast on future high-speed lines in Spain: Structural design and economical impact, International Journal of Railway, 2(1), pp. 1-7.
5 T. Moco Ferreira, P. Fonseca Teixeira, R. Cardoso (2011) Impact of bituminous subballast on railroad track deformation considering atmospheric actions, Journal of Geotechnical and Geoenvironmental Engineering, 137(3), pp. 288-292.   DOI
6 Y.H. Huang, J.G. Rose, C. Lin (1986) Structural design of hot mix asphalt underlayments for railroad trackbeds, Proceedings of the Association of asphalt Paving Technologists, 54, pp. 502-528.
7 T.J. Lyu, J.W. Lee, S.H. Lee, K.S. Park, et al. (2013) Behavior characteristics of ballasted asphalt roadbed by static and dynamic train loading, Spring Conference of the Korean Society for Railway, Korea, pp. 990-997.
8 G.W. Song (2014) Development of thickness design charts for asphalt trackbed foundation based on 2D finite element analyses, Master's thesis, Paichai University.
9 H. Miyashita, M. Nakamura, X. Cao (2008) Investigation into the Performance of a developed earth-pressure sensor, Japan Society of Civil Engineering, 64, pp. 696-711.
10 Asphalt Institute (1998) HMA trackbeds-hot mix asphalt for quality railroad and transit trackbeds, information series 137.