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Ballastless track lifting method

A ballastless track and track technology, which is applied in tracks, track laying, track maintenance, etc., can solve the problems of time-consuming and laborious, lengthy construction period and cumbersome process.

Pending Publication Date: 2019-09-03
RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These lifting methods for the track structure will bring some problems, such as the process is relatively cumbersome, mechanical lifting and grouting require different operating teams in engineering, it is time-consuming and laborious for personnel to enter and transfer, and will lead to a long construction period
In addition, grouting needs to be done by making holes in the track structure (such as track slabs), which can cause damage to the track structure

Method used

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  • Ballastless track lifting method

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Embodiment Construction

[0013] Referring now to the accompanying drawings, the schematic scheme of the device disclosed in the present invention will be described in detail. Although the drawings are provided to illustrate certain embodiments of the invention, the drawings are not necessarily to scale of particular embodiments and certain features may be exaggerated, removed, or partially sectioned to better illustrate and explain aspects of the invention. public content. Some components in the drawings can be adjusted according to actual needs without affecting the technical effect. Appearances of the phrase "in the drawings" or similar terms in the specification do not necessarily refer to all drawings or examples.

[0014] Certain directional terms used hereinafter to describe the drawings, such as "upper", "lower" are to be understood to have their normal meanings and refer to those directions with which the drawings are normally viewed. Unless otherwise specified, the directional terms describ...

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Abstract

The invention provides a ballastless track lifting method. A ballastless track comprises a roadbed and a track structure which are laid from bottom to top. The ballastless track lifting method comprises the steps: A, the elevation of the ballastless track is monitored, and the settlement amount h of the track structure is determined; B, the line-to-line and / or road shoulder closed layers of the ballastless track are demolished; C, the roadbed with the height being H blow the track structure is excavated from the demolished closed layers to form a supporting area; D, a supporting device is fixedly arranged on the lower surface of the supporting area; E, the supporting device is adjusted, thus the supporting device bears the track structure from the lower part to enable the track structure to be lifted by h, and then the supporting device is kept at the height; and F, the supporting area is backfilled, and the closed layers are repaired. Through the ballastless track lifting method, thetrack structure is efficiently lifted under the condition that the track structure is not destroyed.

Description

technical field [0001] The invention relates to a method for adjusting the elevation of a track, in particular to a method for raising a ballastless track. Background technique [0002] The ballastless track generally includes the foundation located at the bottom, the subgrade supported on the foundation and the track structure supported on the subgrade from the vertical view, wherein high-speed trains run on the track structure. Due to various reasons such as long-term operation, geological changes, and surrounding environmental influences, the ballastless track may have localized subsidence. In order to ensure the normal operation of high-speed trains, it is necessary to lift the subsidence section. [0003] The current lifting operation method is carried out directly for the track structure. For example, one method is to use a mechanical lifting structure to directly lift the track structure, and then drill a hole in the track structure and inject grout to the bottom of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01B2/00E01B29/04
CPCE01B2/00E01B29/04
Inventor 张千里陈锋闫鑫李中国王鹏程蔡德钩闫宏业崔颖辉郭增强王仲锦
Owner RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI
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