Method for maintaining and handling railway ballastless track with frost heaving

Abstract

The invention provides a method for maintaining and handling a railway ballastless track with frost heaving. The method includes the steps that geometric dimensions and linear position parameters of the railway ballastless track are obtained; the railway ballastless track is divided into frost heaving convex parts and frost heaving non-convex parts according to the geometric dimensions and linear position parameters of the railway ballastless track, the frost heaving convex parts are parts where protrusions are generated by the railway ballastless track in a frost heaving season, and the frost heaving non-convex parts are parts where protrusions are not generated by the railway ballastless track in the frost heaving season. According to the method, track elevations of the frost heaving non-convex parts are lifted or track elevations of the frost heaving convex parts are lowered before a roadbed frost heaving season, part of the track elevations of the frost heaving convex parts is preferably selected to be lowered in the roadbed frost heaving season, the elevation of the railway ballastless track can be adjusted accurately, the situation that the railway ballastless track unevenly deforms and the geometric dimensions and the parameters exceed specified values caused by the fact that a roadbed and a bridge and culvert foundation suffer from frost heaving is avoided, ride comfort of the railway ballastless track is improved, and comfort, stability and security are guaranteed when a train runs.

Description

technical field [0001] The invention relates to the technical field of railway track construction and maintenance, in particular to a method for maintaining and treating railway ballastless tracks with frost heave problems. Background technique [0002] Frost heave problems of subgrades and bridge culvert foundations are common in seasonally frozen soil regions around the world. Uneven frost heave and thaw settlement affect the operation quality of railways, especially high-speed railways. If severe uneven frost heave or thaw settlement is not If it is dealt with in time, it will cause large deformation of the track and endanger the safety of railway traffic. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a maintenance treatment method for railway ballastless track with the problem of frost heaving, which can avoid large uneven deformation of the ballastless track due to frost heaving, improve the smoothness of ...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above technical problems, the embodiment of the present invention provides a maintenance treatment method for railway ballastless track with frost heave problem, as long as the elevation difference between the frost heave raised part and the frost heave non-raised part is within a certain range and the positions are relatively Fixed, using this method can permanently solve the problem of uneven deformation of ballastless track caused by frost heave of subgrade and bridge culvert foundation. The method includes:

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