Construction method of ballastless tracks of tunnel group of heavy haul railway

A technology of ballastless track and construction method, which is applied in the direction of track, track laying, track maintenance, etc., and can solve the problems that cannot meet the high-precision and high-efficiency requirements of heavy-haul railways

Active Publication Date: 2019-12-06
CHINA RAILWAY SIXTH GROUP +2
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] In order to solve the technical problem that the current ballastless track construction cannot meet the high-precision and high-efficiency requ

Method used

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  • Construction method of ballastless tracks of tunnel group of heavy haul railway
  • Construction method of ballastless tracks of tunnel group of heavy haul railway
  • Construction method of ballastless tracks of tunnel group of heavy haul railway

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Embodiment

[0355] 1. Project overview

[0356] The starting and ending mileage of the new MHTJ-17 section of the civil engineering project of the railway coal transportation channel between West Inner Mongolia and Central China: DK828+253.5~DK883+289.5, of which the total length of the main line is 55.036 kilometers, and the upstream and downstream connecting lines are 2.2 kilometers. There are 26 tunnels in this section with a total length of 1,6804.3 meters, accounting for 30.5% of the total length of the line. In principle, a ballastless track is laid for tunnels with a length of 1km or more, and elastic supporting block type ballastless tracks are generally laid in the tunnel; when the ballastless track of the tunnel group section is considered to be laid in sections, heavy loads are laid on the tunnel entrance, the bridge outside the tunnel and the short-circuit foundation Long sleeper buried ballastless track. The total length of the ballastless track (single track) is 24.157km.

[03...

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Abstract

The invention relates to a construction technology of a heavy haul railway, specifically relates to a construction method of ballastless tracks of a tunnel group of a heavy haul railway. According tothe characteristics of high requirement on the construction precision of a ballastless track bed and difficulty in control in the construction of the ballastless tracks, the principle of near laying and convenience in precision control is adopted; a double-block sleeper is hung and placed to a position to be laid near a construction track bed plate; after key processes of steel bar binding, trackpanel assembly, comprehensive grounding, track coarse adjustment and the like are carried out, the geometric dimension of the tracks is finely adjusted by using a track inspection trolley measuring system, so that the design precision requirement is met, and finally, the track bed concrete is poured for one-step forming. The technology has the characteristics of being simple and convenient to operate, safe, practical, accurate in track geometric dimension, quick to position and the like.

Description

Technical field [0001] The invention relates to a heavy-load railway construction technology, in particular to a heavy-load railway tunnel group ballastless track construction method. Background technique [0002] The design speed of the newly-built coal transportation channel in West Inner Mongolia to Central China: 120km / h, the main line is designed according to the heavy-duty track, and the heavy-duty track structure is reserved in the heavy-duty direction of the double-track section (ie, the downward left line). The main track structure mainly adopts ballasted tracks. In principle, the tunnels with a length of 1km and above are laid with ballastless tracks, and the ballastless tracks are laid in sections. The elastic support block type ballastless track is generally laid in the tunnel. When the ballastless track of the tunnel group section is considered to be laid in sections, the heavy-load long sleeper buried ballastless track is laid on the tunnel entrance, the bridge outs...

Claims

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Application Information

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IPC IPC(8): E01B1/00E01B29/00
CPCE01B1/002E01B29/005
Inventor 李金龙宗书合张伟关军张超赵骏韩翔吕双年高志平魏晓帆顾嘉伟
Owner CHINA RAILWAY SIXTH GROUP
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