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A method for removing and replacing the support layer and substructure of railway ballastless track

A technology of ballastless track and support layer, which is applied in the direction of track, track laying, track maintenance, etc., to achieve the effect of convenient and flexible construction, small structural disturbance and wide application range

Active Publication Date: 2017-12-12
CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the prior art mentioned in the above background technology cannot be repaired without affecting the operation of the ballastless track when there is a problem with the support layer and the substructure of the ballastless track, and to provide a railway Ballastless Track Supporting Layer and Substructure Removal and Replacement Method

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  • A method for removing and replacing the support layer and substructure of railway ballastless track
  • A method for removing and replacing the support layer and substructure of railway ballastless track
  • A method for removing and replacing the support layer and substructure of railway ballastless track

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[0030] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0031] Such as Figure 1~5 , the method for removing and replacing the support layer and the substructure in this embodiment is to use steel pad beams to be erected on the second support layer 12 that needs to be removed for construction (such as figure 1 Shown in the dotted line box in ) as the supporting structure of the passage rail 4, to ensure the normal operation of the track line. The structure of the steel pad beam is as figure 1 As shown, it includes two longitudinal beams 1 arranged longitudinally along the track, the longitudinal beams 1 are I-shaped steel structures, and the webs of the longitudinal beams 1 are arranged vertically. The two longitudinal beams 1 are connected by the beam 2 arranged horizontally along the track to form an overall structure. The beam 2 is usually assembled by two pieces of channel steel. Th...

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Abstract

The invention relates to the technical field of railway ballastless track disease elimination, in particular to a railway ballastless track supporting layer and lower structure detaching and replacing method. During a skylight point period, cut track plates are removed, and temporary steel tracks are erected on a region to be constructed to be connected with existing tracks; during the skylight point period, the temporary steel tracks are detached, steel cushion beams are erected on the region to be constructed, passing steel tracks are laid on the steel cushion beams to be connected with the existing tracks, and supporting layers below the passing steel tracks are detached; during the skylight point period, concrete is poured below the passing steel tracks to form new supporting layers; and the operation is sequentially cyclically and alternately conducted till all the supporting layers are replaced. By the adoption of the railway ballastless track supporting layer and lower structure detaching and replacing method, the steel cushion beams are used for erecting the region to be constructed up to support the passing steel tracks, normal operation along a railway can be achieved, a shutdown is not needed, and normal operation of the tracks is guaranteed. In addition, disease problems existing in the supporting layers below the tracks and a lower structure can be thoroughly solved, potential track safety hazards are thoroughly eliminated, and the popularization value is extremely large.

Description

technical field [0001] The invention relates to the technical field of railway ballastless track disease elimination, in particular to a method for replacing a support layer and a substructure of a railway ballastless track. Background technique [0002] Ballastless track is widely used in China's high-speed railways due to its good stability, small maintenance workload, high ride comfort, long track service life, and low structural height. At the same time, high-speed railways require that the track must have high ride comfort. , requiring high stability of the underrail infrastructure. Although the design and construction of high-speed railways that have been built or are under construction have adopted unprecedented high-standard construction measures, due to my country's vast territory and complex railway construction conditions, there are still many factors that may affect the stability of ballastless tracks, such as Construction quality, foundation settlement, etc. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01B29/00E01B29/16E01B29/40
CPCE01B29/00E01B29/16E01B29/40E01B2204/09
Inventor 徐勇蔡德强文望青张勇康小英
Owner CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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