Vibration Reduction Performance and Parameter Optimization of Damping Pad Floating Slab Track Bed
[1]XU Ping,LIU Xiangming,ZHANG Wenyue,et al.Vibration Reduction Performance and Parameter Optimization of Damping Pad Floating Slab Track Bed[J].Journal of Zhengzhou University (Engineering Science),2026,47(5):111-118.[doi:10.13705/j.issn.1671-6833.2025.05.025]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
47
Number of periods:
2026 Issue 5
Page number:
111-118
Column:
Public date:
2026-09-09
- Title:
- Vibration Reduction Performance and Parameter Optimization of Damping Pad Floating Slab Track Bed
- Keywords:
- damping pad; floating slab; vibration reduction performance; parameter optimization; FEM simulation; dynamic response
- CLC:
- U455. 49
- Abstract:
- The problem of environmental vibration and secondary structural noise caused by subway train operation along the line is becoming increasingly prominent, and so it is necessary to carry out the optimization research on vibration reduction performance of damping pad floating slab track bed. Firstly, One operating metro line of Zheng‑zhou was selected as an engineering example, and the vibration signals of ordinary track bed and damping pad floating slab track bed were in‑situ tested, the Z‑weighted vibration acceleration levels were obtained with 1/3 octave spectrum analysis, and the damping pad floating slab had better vibration reduction performance compared to ordinary integral track bed, which could reach 12.80 dB. Secondly, The simulation model of damping pad floating slab track bed‑tunnel‑soil was established with ABAQUS software. The accuracy of the model and rationality of assumption were verified compared with measured data, the single factor analysis method was adopted. The results showed that: by appropriately reducing the vertical stiffness of the fasteners, increasing the density of the floating slab and reducing the static modulus of the damping pad vibration reduction performance of the damping pad floating slab track bed can be improved. Finally, an optimized combination scheme for damping pad floating slab track bed was proposed for parameters such as fastener stiffness, static modulus of vibration damping pad and floating slab density. The optimized damping pad floating slab track bed could achieve better vibration reduction performance with comparative analysis through finite element simulation.
- References:
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Last Update:
2026-09-07
