The Treatment Method of Ballastless Track Deformation

Abstract

The present invention provides a treatment method for ballastless track deformation, said method comprising: step A, monitoring the track elevation, determining the track section to be adjusted and the amount of drop or lift; step B, determining the displacement depth h1; step C , breaking the supporting layer, excavating the roadbed with a height of h2 and the foundation with a height of h3 under the supporting layer layer by layer from top to bottom to form a replacement area, wherein h2+h3>h1; step D, replace Material is placed in the partial replacement area, wherein the compressive strength and deformation modulus of the replacement material are not less than the compressive strength and deformation modulus of the roadbed; step E, reduce or Elevate the support layer and monitor the track elevation simultaneously; step F, continue to fill the replacement material until full; step G, repair the gap and / or shoulder. The above method realizes the thorough treatment of the deformation of the track structure efficiently and at low cost.

Description

technical field [0001] The invention relates to a method for adjusting the elevation of a track, in particular to a method for adjusting the elevation of a ballastless track. Background technique [0002] At present, my country's high-speed railway is developing rapidly, but due to factors such as subgrade filling and deep foundation expansion or contraction, some high-speed railway lines that use ballastless track lines have successively experienced problems such as arching or sinking. In order to ensure safe operation, it has to The speed limit measures have seriously affected the normal operation of my country's high-speed rail lines. [0003] In view of the above problems, those skilled in the art generally adopt methods such as excavating part of the roadbed drop, grouting lifting and mechanical jacking to adjust the track elevation, but the expansion or contraction of the roadbed or foundation is continuous, and after a period of time After that, the track section that...

AI Technical Summary

Problems solved by technology

[0002] At present, my country's high-speed railway is developing rapidly, but due to factors such as subgrade filling and deep foundation expansion or contraction, some high-speed railway lines that use ballastless track lines have successively experienced problems such as arching or sinking. In order to ensure safe operation, it has to The adoption of speed limit measures has seriously affected the normal operation of my country's high-speed rail lines

[0003] In view of the above problems, those skilled in the art generally adopt methods such as excavating part of the roadbed drop, grouting lifting and mechanical jacking to adjust the track elevation, but the expansion or contraction of the roadbed or foundation is continuous, and after a period of time After that, the track section that has been adjusted may still have arching or sinking again, and this method cannot fundamentally control the arching or sinking of the track

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