A Repair Method for Settling Ballastless Track

A repair method and ballastless track technology, which is applied in track, track laying, track maintenance, etc., can solve the problems of small lifting force, low lifting speed, and poor lifting accuracy, and achieve convenient construction, light and handy equipment, and realization of repair work Effect

Active Publication Date: 2018-07-03
中铁四院集团工程建设有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problems of small lifting force, low lifting speed and poor lifting accuracy in the grouting method used in the prior art mentioned in the above background technology, and to provide a repair method for subsiding ballastless track

Method used

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  • A Repair Method for Settling Ballastless Track
  • A Repair Method for Settling Ballastless Track
  • A Repair Method for Settling Ballastless Track

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Embodiment Construction

[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0029] Such as Figure 1~3 , the present embodiment needs to open the glue injection hole 3 on the base plate 2, the glue injection hole 3 of this embodiment penetrates the base plate 2 and extends into the graded crushed stone layer 8 directly below the base plate 2, in order to ensure the high injection rate The expansion force generated by the polymer can stably act on the base plate 2 and the track plate 1 , and the lower end of the glue injection hole 3 in this embodiment is located directly below the base plate 2 and the track plate 1 . The diameter of the injection hole 3 is 20-30 mm, and the depth is 500-800 mm.

[0030] Each base plate 2 is provided with 1 to 4 groups of glue injection holes 3, and two adjacent groups of glue injection holes 3 are arranged at intervals along the extending direction of the track. The distance...

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Abstract

The invention relates to the technical field of repairing of ballastless tracks, in particular to a repairing method for a settling ballastless track. Expandable high-polymer materials are injected into the space between a base plate and a graded broken stone layer, the raising height of the base plate is adjusted by controlling the injection quantity of the expandable high-polymer materials, and injection of the expandable high-polymer materials is stopped when the base plate rises approximately to the design height; and polymer grouting materials are injected into the space between the base plate and the graded broken stone layer after the high-polymer materials are completely stable, the space between the graded broken stone layer and the base plate is filled with the grouting materials, and repairing of the track is completed after the grouting materials are stable. According to the repairing method for the settling ballastless track, the advantages of the rubber injection pressure, expansion force of a chemical reaction of high polymer, and high strength, good stability, low price and the like of the early-strength shrink-free polymer grouting materials are combined, lifting of the ballastless track can be achieved truly, and the stability of the ballastless track can be guaranteed after the ballastless track is lifted.

Description

technical field [0001] The invention relates to the technical field of repairing ballastless tracks, in particular to a repairing method for subsiding ballastless tracks. Background technique [0002] Ballastless track is an advanced track technology in the world today. It uses reinforced concrete base plate instead of ballast, which can reduce maintenance, reduce dust and beautify the environment. Ballastless track has the characteristics of good track stability, continuity and smoothness, long service life, good structural durability, and less maintenance workload. Therefore, most of the high-speed railways built in my country at this stage are based on ballastless track. my country has a vast territory and complex and changeable geological conditions. Ballastless tracks constructed in unfavorable geological areas such as soft soil, loess, artificial fill, and karst will have the problem of subgrade deformation. A large number of engineering practices have shown that unde...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01B29/04
CPCE01B29/04
Inventor 陈占陈仕奇彭志鹏邬强赵勇孟长江崔国庆王亮何新辉李丹王伟陈侃
Owner 中铁四院集团工程建设有限责任公司
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