Center line deviation rectifying method for ballastless track of high-speed railway of roadbed segment

A ballastless track and high-speed railway technology, applied in tracks, track maintenance, roads, etc., can solve the problems of unfavorable on-site organization and management, poor construction control accuracy, low construction control accuracy, etc., to facilitate safe operation, high construction efficiency, The effect of fast development of early strength

Active Publication Date: 2016-10-26
RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For industrial and civil buildings, the correction method is mainly the forced landing method and the jacking method, such as the method of correcting the deviation of the building with negative pore pressure drilling and excavating soil (201310691935.4). The foundation is reinforced, and then the deviation is rectified by digging soil and other measures. During the correction process, a part of the building elevation will be lost. This method is greatly affected by the geological conditions around the building, and the construction control accuracy is poor; the patent "a kind of building jacking Deviation Correction Method” (201210049116.5) The jacking and deviation correction method requires large construction machinery, long operation time, and many

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  • Center line deviation rectifying method for ballastless track of high-speed railway of roadbed segment
  • Center line deviation rectifying method for ballastless track of high-speed railway of roadbed segment
  • Center line deviation rectifying method for ballastless track of high-speed railway of roadbed segment

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Embodiment 1

[0032] An embodiment of the present invention provides a method for rectifying and repairing the centerline of a settled ballastless track in a subgrade section of a high-speed railway. The method includes the following contents:

[0033] (1) Before lifting, use the total station and electronic level to measure the alignment of the ballastless track in a subgrade section, establish a measurement control network, and number each rail bearing platform, as shown in figure 1 with figure 2 As shown, according to the measurement results, combined with the center line deviation and settlement of the line, the design correction amount and design lift amount corresponding to the 1# to 30# rail platform (001) in the line correction section are determined, as shown in Table 1.

[0034] Table 1 Design correction amount and design lifting height of 1# to 30# rail bearing platform

[0035]

[0036]

[0037] (2) Combined with the structural characteristics of the ballastless track, t...

Embodiment 2

[0045] The embodiment of the present invention provides a method for rectifying and repairing the centerline of the ballastless track without subsidence in the embankment section of the high-speed railway. Specifically, the ballastless track integral ballast bed (002a and 002b) and the superstructure are slightly raised by using a series of high-pressure airbag lifting devices , and then carry out the repair method of pushing and rectifying the line.

[0046] (1) Before lifting, use the total station and electronic level to measure the alignment of the ballastless track in a subgrade section, establish a measurement control network, and number each rail bearing platform, as shown in figure 1 with figure 2 As shown, according to the measurement results, combined with the deviation of the center line of the line, the design correction amount corresponding to the 1# to 30# rail bearing platform (001) in the line correction section is determined, see Table 2.

[0047] Table 2 De...

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Abstract

The invention provides a center line deviation rectifying method for a ballastless track of a high-speed railway of a roadbed segment. The method includes the following steps that the center line deviation amount and settling amount of a ballastless track line are measured; measured data are analyzed, and in combination of the track structure characteristics, lifting points and jacking points are arranged at the lower portion and the side face of a whole roadbed of a ballastless track structure; lifting devices are installed on the lifting points, the whole roadbed of the ballastless track and an upper structure are finely lifted, after an interface between the whole roadbed and graded gravel is jacked to be loosened, the lifting devices are unloaded, and the whole roadbed falls back; jacking devices are installed on the jacking points, and through grouped loading and level-by-level jacking, the ballastless track line is rectified to a designed position; and after line center line deviation rectification is finished, line restoration operation is conducted, a gap in the lower portion of the whole roadbed of the ballastless track is filled with polymer cement mortar, and line smoothness is restored through a fine adjustment fastener system. By the adoption of the method, the problem of center line deviation of the ballastless track line of the roadbed segment can be safely, rapidly and effectively solved within a skylight time, and line smoothness is restored.

Description

technical field [0001] The invention belongs to the technical field of repairing ballastless tracks of high-speed railways, and in particular relates to a center line correction method for ballastless tracks of high-speed railways in subgrade sections. Background technique [0002] Ballastless track has the advantages of good smoothness, stability and durability, and less maintenance work, and has become the main track structure type of high-speed railways today. In order to ensure the safe and efficient operation of high-speed railways, my country has put forward strict requirements on the construction quality and control accuracy of the ballastless track structure, as well as the settlement and deformation of the foundation under the line after construction, and has achieved remarkable results. . However, my country's ballastless track line is long and spans a large area. When the ballastless track line passes through a special section, especially a soft soil foundation se...

Claims

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Application Information

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IPC IPC(8): E01B1/00E01B33/00
CPCE01B1/002E01B33/00E01B2204/06
Inventor 翁智财郑新国谢永江刘竞李书明曾志杨德军程冠之王月华朱长华
Owner RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI
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