Browse > Article
http://dx.doi.org/10.7782/JKSR.2015.18.3.252

Behavior Characteristics of Ballasted Track on Asphalt Roadbed Using Real Scale Test  

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. 252-260 More about this Journal
Abstract
Ballasted track on an asphalt roadbed can be beneficial for its various effects such as (i) decreasing of roadbed thickness by dispersing train load; (ii) prevention of both strength reduction and weakening in roadbed system by preventing rainwater penetration; and (iii) reducing maintenance cost by preventing roadbed mud-pumping and frostbite. With these beneficial effects, ballasted track on asphalt roadbed has been widely used in Europe and Japan, and relevant research for applying such ballasted track on asphalt roadbed systems in Korea is ongoing. In this study, full-scale static and dynamic train load tests were performed to compare the performance of ballasted track on asphalt roadbed and ballasted track. The optimum thickness levels of asphalt and reinforced roadbeds, corresponding to the design criteria for reinforced roadbed of high-speed railway, was estimated using the FEM program ABAQUS. Test results show that the earth pressure on reinforced roadbed of ballasted track on the asphalt roadbed was relatively low compared with that of simple ballasted track. The elastic and plastic displacements of simple ballasted track on the asphalt roadbed were also lower than those of ballasted track. These test results may indicate that the use of ballasted track on asphalt roadbed is an advantageous system in view of long-term maintenance.
Keywords
Ballasted track on the asphalt roadbed; Reinforced roadbed; Full scale test;
Citations & Related Records
Times Cited By KSCI : 2  (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 Korea Railway Research Institute (2012) Development of asphalt roadbed and track system suited to speed up, Korea Railway Research Institute.
3 Jerry G. Rose, Paulo F. Teixeira, Peter Veit (2010) International design practices, applications and performances of asphalt/bituminous railway trackbeds, the 2010 Joint Rail Conference, Urbana Illinois, pp. 1-23
4 Y. Momoya, E. Sekine (2007) Performance-based design method for railway asphalt roadbed, Doboku Gakkai Ronbunshuu E, 63, pp. 608-619.   DOI
5 Y. Momoya (2007) New railway roadbed design, Railway Technology Avalanche, (20), December, pp. 118.
6 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.
7 Korea Railway Network Authority (2011) Rail design standard(roadbed), Korea Railway Network Authority.
8 Railway Technical Research Institute (2007) Design standards for railway structures and commentary earth structures, railway technical research institute.
9 B. Lichtberger (2005) Track Compendium. Formation, Permanent Way, Maintenance, Economics, 1st edition, Europress, Hamburg, Germany.
10 T.H. Lee, E. Nsabimana, C.Y. Choi, Y.H. Jung (2013) Dynamic change of stresses in subsoil under concrete slab track subjected to increasing train speeds, Journal of the Korean Geotechnical Society, 29(10), pp. 57-66.   DOI
11 G.W. Song (2014) Development of thickness design charts for asphalt trackbed foundation based on 2D finite element analyses, Master's thesis, Pai-Chai University.
12 Korea Railway Network Authority (2006) KTX Daegu-Ulsan (Track 4Gongu) track laying and other construction, Korea Railway Network Authority, detail design report.
13 Makoto Sunaga (1996) A study on reasonable design method for reinforcing railroad roadbed, Railway Technical Research institute.
14 Hideki Miyashita, Mitsuaki Nakamura, Xi Cao (2008) Investigation into the performance of a developed earth-pressure sensor, Japan Society of Civil Engineering, 64, pp. 696-711.
15 Korea Railway Network Authority (2012) Railway design guidance and manual, Ballasted Track, KR C-14030.