Method, system and device for detecting hidden diseases of ballastless track

Abstract

The invention discloses a method for detecting hidden diseases of a ballastless track of a railway. The method comprises the following steps that: a relation set of ballastless tracks of preset disease types and corresponding preset characteristic parameter points is established, wherein the ballastless tracks of the preset disease types are disease tracks containing cavities of different shapes, and the preset characteristic parameter points are characteristic expressions of geomagnetic signals; geomagnetic field signals of a to-be-detected ballastless track are collected through a signal collecting device, and characteristic extraction is performed to obtain to-be-detected characteristic parameter points; and the relation between the to-be-detected characteristic parameter points and the preset characteristic parameter points in the relation set by adopting a preset identification model so as to judge the disease type and the corresponding position of the ballastless track of the railway; the hidden disease maintenance level of the ballastless track is diagnosed on the basis of the structural characteristics and maintenance regulations of the detected track; and imaging processing is performed according to the corresponding relation set of the to-be-detected characteristic parameter points and the ballastless track disease types, and disease characteristics are labeled. The invention further provides a corresponding system and device.

Description

technical field [0001] The invention belongs to the technical field of rail transit, relates to urban rail transit and railway track structures, and in particular to a method, system and device for detecting hidden defects of ballastless rails. Background technique [0002] The ballastless track structure of the rail transit public works project directly bears the passage of trains. Under the conditions of high density and high speed, its quality, disease occurrence or not, and performance status are directly related to the safety of train operation. Among them, the surface diseases of the ballastless track of rail transit are easy to check and find, and corresponding countermeasures are taken in time for maintenance. However, the hidden diseases of ballastless track in rail transit are generally difficult to find, and it is easy to cause hidden dangers to the safety of trains running at high speed. Common hidden diseases of ballastless track include CA mortar voids, wide j...

AI Technical Summary

Problems solved by technology

However, ultrasound mainly uses penetration testing, which requires two opposite test surfaces, which does not conform to the structural characteristics of ballastless tracks, and cannot be directly used for the detection of internal defects of ballastless tracks.

The impact echo method is very effective for the detection and location of cracks, delaminations and voids in concrete, but the detection resolution and sensitivity are low

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