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http://dx.doi.org/10.7782/JKSR.2014.17.2.123

Analysis of Permanent Deformations in Asphalt Mixtures for Design of Asphalt Trackbed Foundation  

Lim, Yujin (Department of Civil and Railroad Engineering Paichai University)
Lee, JinWook (Korea Railroad Research Institute)
Lee, SeongHyeok (Korea Railroad Research Institute)
Lee, ByeongSik (Formerly Paichai University, Sedam E&C)
Publication Information
Journal of the Korean Society for Railway / v.17, no.2, 2014 , pp. 123-132 More about this Journal
Abstract
In this study, permanent deformation of asphalt trackbed was investigated by performing repetitive load test on specimen made with dense graded asphalt mixture that was specially prepared for asphalt trackbed foundation. The obtained test results were compared with those computed from the prediction model proposed by AASHTO 2002, called MEPDG. No prediction model adaptable only for permanent deformation of the asphalt trackbed foundation has yet been developed, so the prediction model by AASHTO was adapted in this study to simulate permanent deformation of trackbed foundations in asphalt slab track and in ballasted asphalt track. In order to simulate permanent deformation, a finite element analysis was performed to obtain stresses generated in trackbed due to wheel load. It was found that the predicted permanent deformation was much smaller than the anticipated deformation and that the asphalt track could be stable during the service life of the structure.
Keywords
Asphalt trackbed; Permanent deformation; Triaxial compressive repeated loading test; Finite element analysis; Trackbed design;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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1 D. Li, E.T. Selig (1998) Method for railroad track foundation design. I: development, J. Geotech. Geoeng. Eng., ASCE, 124(4), pp. 316-322.   DOI   ScienceOn
2 UIC (1994) Earthworks and track-bed layers for railway lines. UIC Code 719R, International Union of Railways, Paris, France.
3 D.L. Heath, M.J. Shenton, R.W. Sparrow, J.M. Waters (1972) Design of conventional rail track foundations, Proc. Inst. Civ. Eng., 51, pp. 251-267.   DOI
4 E.C. Shin, H.S. Yang, C.Y. Choi (2008) Estimation of Reinforced Roadbed Thickness based on Experimental Equation, Proc. 2008 Spring conf. Korean Society for Railways, Daegu, pp. 1734-1742.
5 C.L. Monismith, N. Ogawa, C.R. Freeme (1975) Permanent Deformation Characteristics of Subgrade soils due to Repeated Loading, Transportation Research Record, Issue 537, pp. 1-17.
6 R.B. Leahy (1989) Permanent Deformation Characteristics of Asphalt Concrete, PhD Thesis, University of Maryland.
7 AASHTO (2002) 2002 Design Guide of New and Rehabilitated Pavement Structures, Research Report, National Cooperative Highway Research Program, USA.
8 Ministry of Land, Transport and Maritime Affairs (2011) Development of Korean Pavement Design Method and Pavement Improvement Guideline, Korea Pavement Research Program.
9 K.H. Lee, J.Y. Jeon (2004) Permanent Deformation Characteristics of Hot Mix Asphalt by Various Creep Tests, Journal of the Korean Society of Civil Engineers, 24(2D), pp. 195-203.   과학기술학회마을
10 Ministry of Land, Transport and Maritime Affairs (2005) Hot mix asphalt design guidelines.
11 RailOne GmbH (2012) Asphalt Slab Track-GETRACKA1/A3- System description for KRRI.
12 RTRI (2007) Specifications in-Detail for Design of Rail Structures: Earth Structures.
13 K.E. Kaloush, M.W. Witczak (2002) Simple Performance test for Permanent Deformation of Asphalt Mixture, Annual Transportation Research Board Meeting.
14 B.S. Lee (2012) Analysis of Dynamic Modulus and Permanent Deformations in Asphalt Mixtures for Design of Asphalt Trackbed Foundation, Master's Thesis, Paichai University.
15 KRRI (2013) Technical Touring Report of German Asphalt Track System.