DOI QR코드

DOI QR Code

Study on vibration energy characteristics of vehicle-track-viaduct coupling system considering partial contact loss beneath track slab

  • Liu, Linya (Engineering Research Center of Railway Environment Virbration and Noise, Ministry of Education, East China Jiaotong University) ;
  • Zuo, Zhiyuan (Engineering Research Center of Railway Environment Virbration and Noise, Ministry of Education, East China Jiaotong University) ;
  • Zhou, Qinyue (Engineering Research Center of Railway Environment Virbration and Noise, Ministry of Education, East China Jiaotong University) ;
  • Qin, Jialiang (Engineering Research Center of Railway Environment Virbration and Noise, Ministry of Education, East China Jiaotong University) ;
  • Liu, Quanmin (Engineering Research Center of Railway Environment Virbration and Noise, Ministry of Education, East China Jiaotong University)
  • 투고 : 2020.01.02
  • 심사 : 2020.02.22
  • 발행 : 2020.08.25

초록

CA mortar layer disengagement will give rise to the overall structural changes of the track and variation in the vibration form of the ballastless track. By establishing a vehicle-track-viaduct coupling analysis and calculation model, it is possible to analyze the CRTS-I type track structure vibration response while the track slab is disengaging with the power flow evaluation method, to compare the two disengaging types, namely partial contact loss at one edge beneath track slab and partial contact loss at midpoint beneath track slab. It can also study how the length of disengaging influences the track structures vibration power. It is showed that when the partial contact loss beneath track slab, and the relative vibration energy level between the rail and the track slab increases significantly within [10, 200]Hz with the same disengaging length, the partial contact loss at one edge beneath track slab has more prominent influence on the vibration power than the partial contact loss at midpoint beneath track slab. With the increase of disengaging length, the relative vibration energy level of the track slab grows sharply, but it will change significantly when it reaches 1.56 m. Little effect will be caused by the relative vibration energy level of the viaduct. The partial contact loss beneath the track slab will cause more power distribution and transmission between the trail and track slab, and will then affect the service life of the rail and track slab.

키워드

과제정보

This study is financially supported by National Natural Science Grant (No. 51578238, 51968025), Jiangxi Province Natural Science Grant for Key Projects (No. 20192ACBL20009), and Jiangxi Province Key Research and Development Fund (No. 20181BBE50013).

참고문헌

  1. Carlone, L. and Thompson, D.J. (2001), "Vibration of a rail coupled to a foundation beam through a series of discrete elastic supports", SU ISVR TM-873; University of Southampton, United Kingdom.
  2. Dai, G., Wang, M. and Liu, W. (2018), "Experimental study on deformation of CRTS II ballastless track-simply supported beam bridge under dynamic load", J. Vib. Shock, 37(07), 102-108. https://doi.org/10.13465/j.cnki.jvs.2018.07.016.
  3. Fu, N., Yu, L., Zhao, Z. and Li, C. (2018), "Study of vibration energy properties of double-block ballastless damping track", J. China Railway Soc., 40(10), 115-122. https://doi.org/ 10.3969/j.issn.1001-8360.2018.10.016.
  4. Fenander, A. (1997), "Frequency dependent stiffness and damping of railpads", Proc. Institution of Mech. Eng., Part F J. Rail Rapid Transit, 211(1), 51-62. https://doi.org/10.1243/0954409971530897.
  5. Hamet, J.F. (1999), "Railway noise: Use of the Timoshenko model in rail vibration studies", Acta Acustica united with Acta Acustica united with Acustica, Acustica, 85(1), 54-62.
  6. Kaewunruen, S. and Remennikov, A.M. (2007), "Investigation of free vibrations of voided concrete sleepers in railway track system", Proc. Institution Mech. Eng., 221(4), 495-507. https://doi.org/10.1243/09544097JRRT141.
  7. Li, P., Liu, X. and Li, G. (2014), "Influence of CA mortar void on dynamic characteristics of unit slab track on bridge", China Railway Sci., 35(03), 20-27. https://doi.org/10.3969/j.issn.1001-4632.2014.0304.
  8. Li, Z. and Wu, T. (2010), "Analysis of vibration power flow for a railway vehicle-track-viaduct coupled system", J. Vib. Shock, 29(11), 78-82+93+254. https://doi.org/10.13465/j.cnki.jvs.2010.11.032.
  9. Liu, H.P., Wu, T.X. and Li, Z.G. (2009), "Theoretical modeling and effectiveness study of rail vibration for noise control", J. Sound Vib., 323(3-5), 594-608. https://doi.org/10.1016/j.jsv.2009.01.036.
  10. Liu, L., Qin, J., Zhou, Y., Xi, R. and Peng, S. (2019a), "Structural noise mitigation for viaduct box girder using acoustic modal contribution analysis", Struct. Eng. Mech., 72(04), 421-432. https://doi.org/10.12989/sem.2019.72.4.421.
  11. Liu, L., Song, R., Zhou, Y. L. and Qin, J. (2019b), "Noise and vibration mitigation performance of damping pad under CRTS-III ballastless track in high speed rail viaduct", KSCE J. Civil Eng., 23(8), 3525-3534. https://doi.org/10.1007/s12205-019-1947-4.
  12. Liu, L., Qin, J., Liu, Q., Yau, J.D. and Song, R. (2019c), "Spectral analysis of train-rail-bridge coupling system considering frequency-dependent stiffness of rail fastening systems", J. Marine Sci. Technol., 27(2), 114-122. https://doi.org/10.6119/JMST.201904_27(2),0004.
  13. Liu, L., Lu, P. and Qin, J. (2019d), "Random vibration analysis of vehicle-track coupling system based on fastener FVMP model", J. China Railway Soc., 41(05), 93-100. https://doi.org/10.3969/j.issn.1001-8360.2019.05.011.
  14. Ren, J., Li, X., Yang, R. Wang, P. and Xie, P. (2016), "Criteria for repairing damages of CA mortar for prefabricated framework-type slab track", Construct. Building Mater., 110, 300-311. https://doi.org/10.1016/j.conbuildmat.2016.02.036
  15. Ren, J., Wang, J., Li, X., Wei, K., Li, H. and Deng, S. (2020), "Influence of cement asphalt mortar debonding on the damage distribution and mechanical responses of CRTS I prefabricated slab", Construct. Build. Mater., 230, 1-12. https://doi.org/10.1016/j.conbuildmat.2019.116995
  16. Schulte-Werning, B., Beier, M. and Degen, K.G. (2006), "Research on noise and vibration reduction at DB to improve the environmental friendliness of rail- way traffic", J. Sound Vib., 293(3-5), 1058-1069. https://doi.org/10.1016/j.jsv.2005.08.065.
  17. Shi, G., Yang J., Yang X., Zhang, X. (2017), "Vertical vehicle-track-bridge coupling vibration based on dynamic flexibility method", J. Central South U., 48(4), 1119-1126. https://doi.org/10.11817/j.issn.1672-7207.2017.04.036.
  18. Song, R., Liu, L. Xu, B., Liu, Q., Qin, J. (2018), "Study on vibration reduction performance of rubber pads for track viaducts based on dynamic flexibility method", Noise Vib. Control, 38(3), 141-145. https://doi.org/10.3969/j.issn.1006-1355.2018.03.027.
  19. Song, X., Zhai, W. and Wang, S. (2012), "Vertical displacement distributions of ballastless track infrastructure of high-speed railways", China Civil Eng. J., 45(05), 162-168. https://doi.org/10.15951/j.tmgcxb.2012.05.007.
  20. Sun, L., Duan, Y., Zhao, L. and Zhang, Y. (2014), "Dynamic characteristic analysis of CRTS II plate ballastless track structure of high speed railway", J. Southeast University, 44(2), 406-412. https://doi.org/10.3969/j.issn.1001-0505.2014.02.032.
  21. Thompson, D.J. and Verheij, J.W. (1997), "The dynamic behaviour of rail fasteners at high frequencies", Appl. Acoustics, 52(1), 1-17. https://doi.org/ 10.1016/S0003-682X(97)00016-9.
  22. Xu, H., Lin, K.Y. and Wang, P. (2017), "Effect analysis of CRTS I type CA mortar degradation on its fatigue life", J. Railway Eng. Soc., 34(12), 31-34. https://doi.org/10.3969/j.issn.1006-2106.2017.12.007.
  23. Zhu, Z., Gong, W., Zhang, L., Yu, Z. and Chengbiao, C. (2018), "An efficient hybrid algorithm for dynamic analysis of train-track-bridge coupled system based on separation iterative method and coupled time-varying method", China Railway Sci., 39(01), 66-74. https://doi.org/10.3969/j.issn.1001-4632.2018.01.09.