Dynamic Behaviour of Metro Train and Embedded Track System II: Effect of Track Parameters on Dynamic Behaviour

doi:10.3901/JME.2020.24.173

Abstract

Abstract: Embedded track has broad application prospect in vibration and noise reduction of metro. However, it is still necessary to ensure that the embedded track has good dynamic performance. Therefore, embedded track is of great significance to study the effect of track structure and material parameters on the dynamic behavior of the metro train and embedded track system. Based on the developed dynamic model of the metro train and embedded track system, the effect of the filling material characteristics, the geometric dimensioning of the slab and the supporting material characteristics under the slab on the system dynamic behaviour to determine the optimal range of track parameters are analyzed. The results show that the reasonable value range of the vertical stiffness of the filling material is 80-110 kN/mm per meter, the reasonable value range of the lateral stiffness of the filling material is 30-50 kN/mm per meter, and the reasonable value range of the supporting stiffness of the track plate is 1-5 MN/mm per square meter. In addition, the reasonable range of geometric dimension of slab is also analyzed. Is provided The basis is provided for the design and parameter selection of metro embedded track and theoretical support is provided for the application of embedded track in metro from the perspective of dynamics.

Key words: embedded track, metro train, dynamics behaviour, stiffness, damping, geometric dimensioning

CLC Number:

U211
U491

HAN Jian, XIAO Xinbiao, YANG Gang, WEN Zefeng, JIN Xuesong. Dynamic Behaviour of Metro Train and Embedded Track System II: Effect of Track Parameters on Dynamic Behaviour[J]. Journal of Mechanical Engineering, 2020, 56(24): 173-180.

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