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Ballastless track of heavy-duty railway tunnel group and construction method thereof

A ballastless track and tunnel group technology, applied in the direction of track, movable track, laying track, etc., can solve the problem that the accurate detection and maintenance of loose fasteners cannot be realized, and achieve the effect of convenient maintenance process

Active Publication Date: 2022-08-09
北京中铁诚业工程建设监理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the fastener system of ballastless track is generally installed densely, and it is difficult for railway maintenance personnel to observe which fastener is at risk of loosening with the naked eye. Therefore, it is impossible to achieve accurate detection and repair of loose fasteners, which needs to be improved

Method used

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  • Ballastless track of heavy-duty railway tunnel group and construction method thereof
  • Ballastless track of heavy-duty railway tunnel group and construction method thereof
  • Ballastless track of heavy-duty railway tunnel group and construction method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0046] Embodiment 1: The embodiment of the present application discloses a ballastless track for a heavy-duty railway tunnel group.

[0047] refer to figure 1, the ballastless track of the heavy-duty railway tunnel group includes a concrete base 1 , several track slabs 2 and two rows of straight steel rails 3 . Several track slabs 2 are divided into two rows, and are arranged side by side at equal distances and laterally on the concrete base 1 to realize the support of the steel rails 3 .

[0048] refer to figure 1 , figure 2 The upper end surfaces of both ends of the track plate 2 are provided with a pair of shoulders 21 . The rails 3 are laid on the track plate 2 and are located between each pair of shoulders 21 to realize the limit of the rails 3 . A pair of fasteners 22 are disposed between each pair of shoulders 21 . The pair of fasteners 22 are distributed on both sides of the rail 3 and press against the side walls of the lower ends on both sides of the rail 3 .

...

Embodiment 2

[0074] Embodiment 2: The embodiment of the present application discloses a construction method of a ballastless track for a heavy-duty railway tunnel group.

[0075] The construction method of the ballastless track of the heavy-duty railway tunnel group comprises the following steps:

[0076] S1, install the reinforcing bars of the ballast floor, and pour the bottom concrete;

[0077] S2, install basic reinforcement bars, concrete base 1, and maintain concrete base 1;

[0078] S3, laying the prefabricated track slab 2 on the concrete base 1 at equal distances, and pouring concrete to fix the track slab 2;

[0079] S4, laying the rail 3, and calibrating the rail 3;

[0080] S5, install the fastener 22, and fasten the bolt 23 into the embedded pipe 24 on the track plate 2 to realize the fixing of the fastener 22 and the rail 3;

[0081] S6, install the air bag 5, and fill the detection liquid with color into each air bag 5;

[0082] S7 , install the feedback tube 6 , and fil...

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Abstract

The application relates to a ballastless track for a heavy-duty railway tunnel group and a construction method thereof, and relates to the technical field of ballastless track. It includes a concrete base, several track slabs and two rows of steel rails. The fastener is provided with bolts that are threadedly connected to the track plate; the upper end faces of both ends of the track plate are provided with pre-embedded pipes, and the end faces of both ends are provided with detection pipes extending inward, and the detection pipes are located inside the track plate One end of the tube is bent upward and is provided with an extension tube that communicates with the lower end of the pre-embedded tube, and the other end is bent downward and is provided with a transparent observation tube; the lower end of the observation tube is provided with an elastic airbag, the airbag is detachably connected to the observation tube, and the airbag is detachably connected to the observation tube. Contains a colored detection liquid. In the present application, the displacement change caused by the loosening of the bolt is transferred to the observation tube to detect the change of the liquid, so that the maintenance personnel can accurately judge whether the fastener is loose, so as to realize the accurate maintenance of the fastener.

Description

technical field [0001] The present application relates to the field of ballastless tracks, in particular to a ballastless track for heavy-duty railway tunnel groups and a construction method thereof. Background technique [0002] Ballastless track refers to the track structure that uses concrete, asphalt mixture and other integral foundations to replace the granular gravel ballast bed, also known as ballastless track. The ballastless track avoids splashing ballast, and has the advantages of good smoothness, good stability, long service life, good durability and less maintenance work. [0003] Chinese patent CN202247541U discloses a slab-type ballastless track structure, which includes two parallel steel rails, and two cloth and one membrane sliding layers, a concrete foundation bed, a mortar cushion and a track plate are sequentially arranged below the steel rails from bottom to top. The two sides of the plate are respectively provided with shoulders, and each steel rail is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01B23/10E01B23/14E01B29/16E01B35/00
CPCE01B23/10E01B23/14E01B29/16E01B35/00
Inventor 陈如意杨志安史新生
Owner 北京中铁诚业工程建设监理有限公司