A method of rectifying elevation disease of ballastless track subgrade

A ballastless track and track technology, applied in the direction of roads, tracks, track maintenance, etc., can solve the problems of roadbed soil materials being easily affected by external influences, affecting railway operations, and limited adjustment capabilities, achieving small impact, less excavation, and Adjust the effect with high control

Active Publication Date: 2021-12-28
RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI +1
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] However, the complex geological conditions and huge differences in the natural environment along the high-speed railway make the subgrade often face various unfavorable factors. The complexity of the subgrade soil material is easily affected by external influences, and elevation changes such as overhanging or settlement may occur
The ballastless track is very sensitive to the smoothness of the foundation, and its self-adjusting ability is limited. The unevenness of the ballastless track caused by the deformation of the subgrade will affect the railway operation

Method used

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  • A method of rectifying elevation disease of ballastless track subgrade
  • A method of rectifying elevation disease of ballastless track subgrade
  • A method of rectifying elevation disease of ballastless track subgrade

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with accompanying drawing.

[0030] The application provides a method for controlling the elevation disease of the ballastless track subgrade.

[0031] First of all, the location and type of the track 60 disease are obtained through track detection, so as to determine the scope of remediation and plan the remediation plan. Then, within the remediation range, an adjustment groove 1 is set under the support layer 80 by underground digging, such as figure 1 shown. Vertically, the adjusting groove 1 extends downward from the bottom surface of the supporting layer 80 (that is, the surface of the bed surface layer 90 ). In the longitudinal direction, the adjustment slot 1 extends along the laying direction of the rails 60 , and in the transverse direction, the two sides of the adjustment slot 1 are respectively located outside the side walls of the corresponding support layer 80 . Next, adjust the track 6...

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Abstract

The present invention proposes a method for regulating the elevation disease of the ballastless track subgrade, including: step 1, obtaining the position and type of the track disease to determine the scope of treatment; step 2, within the scope of treatment, digging below the supporting layer Set the adjustment groove; Step 3, adjust the track to the target elevation; Step 4, pour into the adjustment groove to fill the adjustment groove, wherein, in step 2, vertically, the adjustment groove extends downward from the bottom of the supporting layer, and vertically, the adjustment groove Extending along the direction of track laying, laterally, the two sides of the adjustment groove are located outside the corresponding side walls of the supporting layer. This method is economical and can be constructed during the skylight time.

Description

technical field [0001] The invention relates to the technical field of existing railway maintenance engineering, in particular to a method for regulating elevation diseases of ballastless track subgrades. Background technique [0002] In recent years, with the rapid development of high-speed railways, my country has built large-scale high-speed railways, which has brought great convenience to people's travel. The ballastless track has the characteristics of good rigidity uniformity, strong structural durability and less maintenance workload. Therefore, ballastless tracks are generally used for railways with a design speed of 300 kilometers per hour and above, tunnels and tunnel group sections with a length of more than 1 kilometer. [0003] However, the complex geological conditions and huge differences in the natural environment along the high-speed railway make the subgrade often face various unfavorable factors. The complexity of the subgrade soil material is easily affe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01B1/00E01B33/00
CPCE01B1/002E01B33/00E01B2204/09
Inventor 张千里陈锋王鹏程章敏尧俊凯李中国郭浏卉曾帅
Owner RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI
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