Field measurement and vibration reduction evaluation of rubber floating slab track on metro lines

  • Pengsong Wang School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China
  • Tao Xin School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China Beijing Key Laboratory of Track Engineering, Beijing Jiaotong University, Beijing 100044, China
  • Yu Ding School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China
  • Sen Wang School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China
  • Xiaoli Zheng Beijing Municipal Institude of City Planning and Design , Beijing 100045 , China
Keywords: Field measurement, Rubber floating slab track, Metro line, Vibration reduction

Abstract

Rubber floating slab track (RFST) is a vibration reduction track structure widely adopted in metro lines because the environmental vibration problems induced by urban rail transit are getting worse. Due to the complexity of rubber materials and the uncertainty of environmental factors, there may be some differences in the vibration reduction effects of RFST between its design and service phase. To monitor and evaluate realistic vibration reduction effects of RFST, field measurements are carried out on four typical cross sections in a tunnel of a metro line. Vertical accelerations of rail, track slab, and tunnel wall are collected
for straight-line (SL) and curved-line (CL) segments. The measurement data are analysed and compared between common track and RFST. Time-domain and frequency-domain analysis are carried out, and Z weighted vibration acceleration level on tunnel wall is calculated. The field measurement results show the vibration reduction effects of RFST are remarkable. It can hinder the transmission of vibration from the track to the tunnel. The results can provide a reference for the application of RFST in metro lines.

References

A. Wang, Z. Wang, Z. Zhao, Y. Zhang, Y. Duan, T. Lei, M. Du,

(2015), Effects of Track Stiffness and Tuned Rail Damper on Rail

Roughness Growth and Rail Vibration Levels on Metro System.

Noise and Vibration Mitigation for Rail Transportation Systems,

Vol. 126, 667-674.

Z. Q. Yan, V. Markine, A. J. Gu, Q. H. Liang, (2014), Optimization

of the dynamic properties of the ladder track system to control rail

vibration using the multipoint approximation method. Journal of

Vibration and Control, Vol. 20, issue 13, 1967-1984.

Y. Dere, (2016), Effectiveness of the floating slab track system

constructed at Konya Light Rail. Measurement, Vol. 89, 48-54.

G. Montella, G. Mastroianni, G. Serino, (2012), Experimental and

numerical investigations on innovative floating-slab track including

recycled rubber elements. Proceedings of International Conference

on Noise and Vibration Engineering (Isma2012) / International

Conference on Uncertainty in Structural Dynamics (Usd2012),

-2879.

M. H. Li, M. Ma, W. N. Liu, B. L. Jiang, (2019), Influence of static

preload on vibration reduction effect of floating slab tracks. Journal

of Vibration and Control, Vol. 25, issue 6, 1148-1163.

G. S. Jee, H. H. Nguyen, S. Y. Jang, H. Lee, W. Chung, (2018), Key

Characteristics of a Floating Slab Track Based on Longitudinal

Interaction Analysis. Mathematical Problems in Engineering.

R. X. Cui, L. Gao, X. P. Cai, Y. L. Zhong, (2012), Research on the

Design for the Rubber Vibration Isolator of Floating Slab Track.

New Technologies of Railway Engineering, 299-304.

H. Jin, S. H. Zhou, W. N. Liu, (2017), Optimization of vibration

reduction of the rubber floating-slab tracks. Journal of

Vibroengineering, Vol. 19, issue 2, 1214-1224.

G. Hu, P. Zhang, G. R. Wang, M. Zhang, M. Li, (2017), The

influence of rubber material on sealing performance of packing

element in compression packer. Journal of Natural Gas Science and

Engineering, Vol. 38, 120-138.

Mechanical vibration and shock—evaluation of human exposure to

whole body vibration—part 1: general requirements, (1997), ISO

-1:1997.

Published
2019-08-27
Section
Articles

Most read articles by the same author(s)