A corrugation evaluation method for guiding corrugation track maintenance

Abstract

The invention discloses a corrugation evaluation method for guiding corrugated track maintenance. The method comprises the following steps: segmenting a wave length influence quantity value L of a corrugated rod section, a wave depth influence quantity value D of the corrugated section, a vibration effective value influence quantity value G and sustaining kilometer post length K of the corrugated section, which are obtained through calculating the track detection parameters of the corrugated section, into N sections with sub-section lengths K according to a calculation formula of N=int(K / k)+1, wherein the wheel track acting force influence quantity value of each section is An, calculating the maintenance decision value W of each corrugated section of the track through a track corrugation comprehensive maintenance decision function, and determining whether to maintain according to the size of the W value of each section; and deciding the priority according to the size of the W value of each section and then guiding the track corrugation maintenance. According to the method disclosed in the invention, the track engineering and the vehicle engineering are combined to carry out track state system engineering estimation, the track corrugation maintenance is guided, the maintenance mode is optimized, the maintenance effect is estimated, the wheel track acting force relation can be optimized and the train running safety can be ensured.

Description

technical field [0001] The invention relates to the technical field of fault diagnosis, in particular to an evaluation method for guiding rail corrugation maintenance. Background technique [0002] China's urbanization process is relatively fast. The national urbanization rate was 52.57% in 2012, 53.73% in 2013, and 54.77% in 2014. It is predicted that by 2020, the national urbanization rate will exceed 60%, and the huge influx of people into cities will mean that public transportation will have to bear more traffic. [0003] For this reason, in the national "Twelfth Five-Year Plan", it is proposed to build a comprehensive transportation system, clarify the priority development strategy of public transportation, vigorously develop the urban public transportation system, and increase the share ratio of public transportation travel. Scientifically formulate urban rail transit technical routes, standardize construction standards, and orderly promote the construction of urban r...

AI Technical Summary

Problems solved by technology

When the train runs in the corrugation section, it will cause abnormal dynamic response of the train, accelerate the mechanical damage of the bogie and other related installation parts, and increase the risk of safe operation of the train;

[0007] 2) The howling sound from the train passing the corrugated track has become one of the main sources of rail traffic noise. In some curved sections, the adoption of vibration reduction measures not only failed to reduce vibration, but aggravated the noise and vibration

Seriously reduce the comfort of passengers and affect the quality of operating services;

[0008] 3) Increase the workload and cost of operation and maintenance. The emergence of corrugation intensifies the dynamic effect of wheel and rail, accelerates the damage of trains, and increases maintenance and repair costs

[0010] At present, the maintenance methods of conventional track corrugation are more derived from the experience of China National Railways. The wave depth value is used as the measure of track maintenance and repair. This method can judge the geometry of track corrugation, but it cannot be used for the force on the wheel and rail. associate

[0011] In the actual situation, the wheel-rail force is not necessarily small when the corrugation depth is small, and the wheel-rail force is not necessarily large when the corrugation depth is large. The track maintenance standard based solely on the wave depth value cannot effectively improve the wheel-rail force. Traffic safety operation has brought hidden dangers and reduced the quality of operational services

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