Repair method for ballastless track foundation settlement

A technology of foundation settlement and ballastless track, applied in tracks, track maintenance, roads, etc., can solve the problems of uncontrollable slurry expansion, difficult to accurately lift the track structure, etc., and achieve the effects of convenient construction, fast construction speed, and simple construction machinery.

Inactive Publication Date: 2015-03-25
RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method has the problem that the expansion of the grout in the foundation is uncontrollable, and it is difficult to achieve precise lifting of the track structure

Method used

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  • Repair method for ballastless track foundation settlement
  • Repair method for ballastless track foundation settlement
  • Repair method for ballastless track foundation settlement

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with accompanying drawing.

[0024] figure 1 It is a schematic diagram of using the method according to the invention to repair the foundation settlement of the ballastless track. Ballastless track 100 generally comprises foundation 1 (see image 3 with Figure 5 ), the supporting layer 2 above the foundation 1 and the track plate 3 arranged above the supporting layer 2, and the rail 4 is arranged above the track plate 3 (such as image 3 shown). Usually, the foundation 1 is graded gravel, the support layer 2 is a continuous plain concrete slab poured on site, the track slab 3 is a prefabricated short concrete slab, and multiple track slabs 3 are continuously laid on the support layer 2 . Usually the width of the track plate 3 is less than the width of the supporting layer 2, such as figure 1 The width difference shown in d.

[0025] When the foundation 1 settles, the supporting layer 2 will also...

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Abstract

The invention relates to a repair method for ballastless track foundation settlement. The method includes the first step of lifting a supporting layer of a settlement area to make a corresponding track board lifted by a preset rising amount, the second step of conducting grouting and compacting on the lower portion of the lifted supporting layer, and the third step of finishing grouting and completing repair. By means of the method, the lifting accuracy can be accurately controlled.

Description

technical field [0001] The invention relates to the field of ballastless tracks of high-speed railways, in particular to a method for repairing settled ballastless tracks. Background technique [0002] At present, the most commonly used track structure form of high-speed railways at home and abroad is ballastless track. According to the location of the track, the ballastless track can be divided into the following four types: track on the subgrade, track on the bridge, track in the tunnel and track in the turnout area. [0003] A ballastless track generally consists of the following structure: a track slab carrying the rails, a bearing layer supporting the track slab, and a foundation below the bearing layer. The support layer is usually an integral cast-in-place plain concrete slab and its width is greater than that of the track slab, and the foundation below the support layer is graded crushed stone. Due to the long service time of some railway lines, complex geological ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01B2/00E01B1/00
CPCE01B37/00E01B1/002E01B2204/06E01B2204/09
Inventor 张千里答治华蔡德钩陈锋马伟斌李中国王立军程远水刘杰朱忠林闫宏业
Owner RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI
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