Abstract
The high traffic density of railway line causes ballasted track to be extremely busy, and thus it is particularly important to improve the efficiency during railway maintenance. The changing law of dynamic characteristics of ballast bed during operation for the dynamic track stabilizer is conducive to optimize simulation analysis of the vehicle-track system, so as to provide an optimized choice of operating parameters for promoting the pertinence and efficiency of dynamic track stabilizer. This paper presents the acceleration response of vehicle-track-subgrade system during operation of a WD-320 dynamic track stabilizer and proposes the range of effective operating parameters. Then, the influence of operating parameters on the dynamic characteristics of the ballast bed is discussed for searching the optimal operating parameters under the single factor influence. Finally, the change laws including the support stiffness, damping, lateral resistance, and subsidence for the ballast bed are studied, and a parameterized model for dynamic characteristics of the ballast bed which can optimize the selection for operating parameters is constructed, rendering an effective reference variable for improving the simulation accuracy of the vehicle-track coupling system.
Highlights
Bo Yan and Jingjing YangReceived 16 January 2021; Revised 8 February 2021; Accepted 2 March 2021; Published 11 March 2021
At present, high speed and heavy loading are the development direction of the railway traffic system, which leads to the extremely busy status of railway transportation
In order to accelerate the development of modern railway construction, we provide some effective references for optimizing the large-scale railway maintenance equipment and improving the operation accuracy, operation efficiency, and track quality
Summary
Received 16 January 2021; Revised 8 February 2021; Accepted 2 March 2021; Published 11 March 2021. E high traffic density of railway line causes ballasted track to be extremely busy, and it is important to improve the efficiency during railway maintenance. E changing law of dynamic characteristics of ballast bed during operation for the dynamic track stabilizer is conducive to optimize simulation analysis of the vehicle-track system, so as to provide an optimized choice of operating parameters for promoting the pertinence and efficiency of dynamic track stabilizer. The change laws including the support stiffness, damping, lateral resistance, and subsidence for the ballast bed are studied, and a parameterized model for dynamic characteristics of the ballast bed which can optimize the selection for operating parameters is constructed, rendering an effective reference variable for improving the simulation accuracy of the vehicle-track coupling system
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