Track structure mechanical property evaluation method based on vibration noise frequency spectrum feature matching

Abstract

The invention discloses a track structure mechanical property evaluation method based on vibration noise frequency spectrum feature matching, wherein vibration acceleration and noise radiation, generated when a train passes by, of a track structure in normal and defected states are tested, and consequently a frequency spectrum curve feature database of the acceleration and sound pressure data corresponding to various damage defects is built. The processed to-be-detected track structure vibration and noise test data is compared through the built database, thus, track traffic track structure mechanical state assessment and identification and judging of various damage defects based on vibration noise joint test are realized, the shortcoming of failure in systematic assessment of the track structure mechanical state through single vibration or noise test data in the past is remedied, and safe and steady running of the track traffic is guaranteed.

Description

technical field [0001] The invention relates to the evaluation of the mechanical performance of the railway track structure, in particular to a method for evaluating the mechanical performance of the rail structure based on the matching of vibration and noise frequency spectrum features. Background technique [0002] Rail transit plays a huge role in meeting my country's passenger transportation needs and promoting economic development. The smoothness and stability of the track structure of rail transit are directly related to the running state of high-speed trains. Under the combined action of complex vehicle loads and environmental loads, the service state of the track structure continues to degrade, resulting in gradual damage to the line and reducing the track load. The running quality of traffic vehicles. Therefore, it is necessary to carry out scientific and timely detection and evaluation of the service status of the rail transit track structure, to find out the caus...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a track structure mechanical performance evaluation method based on vibration and noise spectrum feature matching for track structure disease identification and evaluation, so as to solve the problem that the traditional track structure mechanics cannot be comprehensively and scientifically evaluated due to separate vibration or noise tests. status problem

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