Browse > Article
http://dx.doi.org/10.7782/JKSR.2014.17.5.355

Effects of Transverse Cracks on Stress Distributions of Continuously Reinforced Concrete Tracks Subjected to Train Loads  

Bae, Sung Geun (Department of Civil and Environmental Engineering, University of Ulsan)
Choi, Seongcheol (Department of Civil and Environmental Engineering, Chung-Ang University)
Jang, Seung Yup (High-speed Railroad Research Center, Korea Railroad Research Institute)
Cha, Soo Won (Department of Civil and Environmental Engineering, University of Ulsan)
Publication Information
Journal of the Korean Society for Railway / v.17, no.5, 2014 , pp. 355-364 More about this Journal
Abstract
The restrained volume changes of concrete due to variations of temperature and moisture produce transverse cracks in continuously reinforced concrete tracks (CRCTs). Such cracks are known to significantly affect the behaviors and long-term performance of CRCT. To investigate the effects of the transverse cracks on the behavior of CRCT and to develop more reasonable maintenance standards for cracks, in this study, the stress distribution of the track concrete layers (TCL) and the hydraulically stabilized base course (HSB) with transverse cracks were numerically predicted by a three dimensional finite element analysis when CRCT was subjected to train loads. The results indicate that the bending stresses of TCL and vertical stresses at the interfaces between TCL and HSB increased as the cracks were deepened. In addition, vertical stresses were locally concentrated near reinforcing steel in cracks in TCL when full-depth cracks developed, which may lead to punch-outs in CRCTs. Comparably, the effects of crack width and spacing were not as significant as crack depth. This study indicates that ensuring the long-term performance of CRCTs requires adequate maintenance not only for crack width and spacing but also for crack depth. Our results also show that locating HSB joints between sleepers is beneficial to the long-term performance of CRCTs.
Keywords
Continuously reinforced concrete track (CRCT); Finite element analysis; Transverse crack; Stress distribution; Long-term performance;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 S.G. Bae, S.C. Choi, S.Y. Jang, S.W. Cha (2014) Prediction of crack pattern of continuously reinforced concrete track induced by temperature change and shrinkage of concrete, Journal of Korean Society for Railway, 17(4), pp. 270-280.   과학기술학회마을   DOI
2 J. Eisenmann, H.G. Leykauf (2001) Betonfahrbahnen, Ernst & Sohn, Berlin, 321p.
3 D.G. Zollinger, E.J. Barenberg (1990) Continuously reinforced pavement, Punchouts and other distresses and implications for design, Project No. IHR-518, Illinois Cooperative Research Program Series No.227.
4 J. Eisenmann, H.G. Leykauf (2000) Feste Fahrbahn fur Schienenbahnen, Betonkalendar, pp. 291-326.
5 KRTC (2006) Execute Design of Track for Gyeong-Bu High Speed Line 2nd Phase(Dong-Daegu-Busan), Korea Railway Network Authority.
6 TNO DIANA (2003) DIANA-Finite Element Analysis user's manual, TNO DIANA, The Netherlands
7 C. Esveld (2001) Modern railway track, 3rd ed., MRT productions, Zaltbommel, 654p.
8 L.S Lim, M.G. Park, Y.K. Nam, J.H. Jeong (2009) Investigation of friction characteristics between concrete slab and subbase layers, Journal of Korean Society of Civil Engineers, 29(6D), pp. 719-726.   과학기술학회마을
9 S.M. Kim, M.C. Won, B.F. McCullough (2000) Three-dimensional analysis of continuously reinforced concrete pavements, Transportation Research Record - Journal of the Transportation Research Board, No. 1730, Transportation Research Board, National Research Council, pp. 43-52.
10 CEB-FIP Model Code 1990 (1990) Comite Euro-International du Beton (CEB).
11 S.W. Wattar (2001) Aggregate interlock behavior of large crack width concrete joints in PCC airport pavements, PhD Thesis, University of Illinois at Urbana-Champaign.
12 E.N.B.S. Julio, F.A.B. Branco, V.D. Silva (2004) Concrete-toconcrete bond strength, Influence of the roughness of the substrate surface, Construction and Building Materials, 18(9), pp. 675-681.   DOI
13 S.G. Millard, R.P. Johnson (1984) Shear transfer across cracks in reinforced concrete due to aggregate interlock and to dowel action. Magazine of Concrete Research, 36(126), pp. 9-21.   DOI   ScienceOn
14 M.C. Won (2011) continuously reinforce concrete pavement, identification of distress mechanisms and improvement of mechanistic-empirical design procedures, Transportation Research Record - Journal of the Transportation Research Board, No.2226, pp. 51-59.
15 NCHRP (2003) Guide for mechanistic-empirical design of new and rehabilitated pavement structures, Appendix LL: Punchouts in continuously reinforced concrete pavements.