Abstract: The longitudinal resistance performance of a granular ballast bed under cyclic symmetric displacement loading was studied based on a full-scale test model of ballast track structures. The change law of the longitudinal resistance characteristics of the ballast bed under variable displacement amplitudes was analyzed. The results show that: the resistance-displacement curves of a granular ballast bed are a set of closed hysteretic curves, indicating obvious energy consumption; a granular ballast bed softens gradually during the cyclic process with constant displacement amplitude, and the residual deformation rate increases nonlinearly with increasing cycle number; the peak value of the longitudinal resistance of lines decreases with increasing cycle number; the cyclic softening of a granular ballast bed is dependent on the displacement amplitude–the higher the displacement, the more severe the cyclic softening will become; after cyclic displacement loading is applied several times, the longitudinal resistance of the bed will degenerate obviously, and the higher the displacement amplitude, the higher the longitudinal resistance attenuation rate of the ballast bed will become.

散粒体道床在对称位移循环加载下的纵向阻力性能

[1]Anderson, W.F., Fair, P., 2008. Behaviour of railroad ballast under monotonic and cyclic loading. Journal of Geotechnical and Geoenvironmental Engineering, 134(3):316-327. https://doi.org/10.1061/(asce)1090-0241(2008)134:3(316)

[2]Chen, R., Wang, P., Wei, X.K., 2013. Track-bridge longitudinal interaction of continuous welded rails on arch bridge. Mathematical Problems in Engineering, 2013:494137.

[3]Esveld, C., 2001. Modern Railway Track. MRT Press, the Netherlands.

[4]Han, J., Zhao, G.T., Xiao, X.B., et al., 2015. Effect of softening of cement asphalt mortar on vehicle operation safety and track dynamics. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 16(12):976-986.

[5]Hayano, K., Koike, Y., Nakamura, T., et al., 2014. Effects of sleeper shape on lateral resistance of railway ballasted tracks. Proceedings of the Geo-Shanghai International Conference, p.491-499.

[6]Hayashikawa, T., Abdel Raheem, S.E., Hashimoto, I., 2004. Nonlinear seismic response of soil-foundation-structure interaction model of cable-stayed bridges tower. 13th World Conference on Earthquake Engineering, No. 3045.

[7]Indraratna, B., Salim, W., 2005. Mechanics of Ballasted Rail Tracks: a Geotechnical Perspective. Taylor and Francis/ Balkema, London, UK.

[8]Indraratna, B., Thakur, P.K., Vinod, J.S., 2010. Experimental and numerical study of railway ballast behavior under cyclic loading. International Journal of Geomechanics, 10(4):136-144.

[9]Indraratna, B., Nimbalkar, S., Neville, T., 2014a. Performance assessment of reinforced ballasted rail track. Proceedings of the Institution of Civil Engineers-Ground Improvement, 167(1):24-34.

[10]Indraratna, B., Nimbalkar, S., Rujikiatkamjorn, C., 2014b. From theory to practice in track geomechanics–Australian perspective for synthetic inclusions. Transportation Geotechnics, 1(4):171-187.

[11]Jing, G.Q., 2012. Railway Ballast Bed. China Railway Publishing House, Beijing, China (in Chinese).

[12]Kennedy, J., 2011. A Full-scale Laboratory Investigation into Railway Track Substructure Performance Ballast Reinforcement. PhD Thesis, Heriot-Watt University, Edinburgh, UK.

[13]Kerokoski, O., 2010. Determination of longitudinal and transverse railway track resistance. Joint Rail Conference, p.157-165.

[14]Le Pen, L., 2008. Track Behaviour: the Importance of the Sleeper to Ballast Interface. PhD Thesis, University of Southampton, Southampton, UK.

[15]Le Pen, L., Powrie, W., 2011. Contribution of base, crib and shoulder ballast to the lateral sliding resistance of railway track: a geotechnical perspective. Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit, 225(2):113-128.

[16]Le Pen, L., Bhandari, A.R., Powrie, W., 2014. Sleeper end resistance of ballasted railway tracks. Journal of Geotechnical and Geoenvironmental Engineering, 140(5):04014004.

[17]Lim, W.L., 2004. Mechanics of Railway Ballast Behaviour. PhD Thesis, University of Nottingham, Nottingham, UK.

[18]Mamou, A., Powrie, W., Priest, J.A., et al., 2017. The effects of drainage on the behaviour of railway track foundation materials during cyclic loading. Géotechnique, 68(4):1-10.

[19]MOR (Ministry of Railways of the People’s Republic of China), 2008. Railway Ballast, TB/T 2140-2008. MOR, China (in Chinese).

[20]Nimbalkar, S., Indraratna, B., 2016. Improved performance of ballasted rail track using geosynthetics and rubber shockmat. Journal of Geotechnical and Geoenvironmental Engineering, 142(8):04016031.

[21]Nurmikolu, A., 2012. Key aspects on the behaviour of the ballast and substructure of a modern railway track: research-based practical observations in Finland. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 13(11):825-835.

[22]Ruge, P., Birk, C., 2007. Longitudinal forces in continuously welded rails on bridge decks due to nonlinear track bridge interaction. Computers & Structures, 85(7-8):458-475.

[23]Shi, Y.J., Wang, M., Wang, Y.Q., 2011. Experimental and constitutive model study of structural steel under cyclic loading. Journal of Constructional Steel Research, 67(8):1185-1197.

[24]Sung, W., Shih, M., Lin, C., 2005. The critical loading for lateral buckling of continuous welded rail. Journal of Zhejiang University-SCIENCE, 6A(8):878-885.

[25]UIC (International Union of Railways), 2001. Track/Bridge Interaction Recommendations for Calculations, UIC 774-3E. International Union of Railways, Paris, France.

[26]Wang, Z.G., Jing, G.Q., Yu, Q.F., et al., 2015. Analysis of ballast direct shear tests by discrete element method under different normal stress. Measurement, 63:17-24.

[27]Yan, B., Dai, G.L., 2014. Analysis of interaction between continuously-welded rail and high-speed railway bridges considering loading-history. Journal of the China Railway Society, 36(6):75-80 (in Chinese).

[28]Zakeri, J.A., Barati, M., 2015. Utilizing the track panel displacement method for estimating vertical load effects on the lateral resistance of continuously welded railway track. Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit, 229(3):262-267.

[29]Zhou, D.P., 1995. Rheological Mechanics and Application in Geotechnical Engineering. Southwest Jiaotong University Press, Chengdu, China (in Chinese).