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Method for constructing small-radius curve ballastless track

A small radius curve, ballastless track technology, applied in the direction of track, track laying, track maintenance, etc., can solve the problems of complex construction, difficult to ensure accuracy, affecting construction and other problems, achieve good roundness, simple and reliable adjustment, and solve the adjustment. difficult effect

Active Publication Date: 2015-01-07
北京铁五院工程机械有限公司 +1
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, urban rail transit mostly uses a simple rail support frame for ballastless track construction. The support frame has a simple structure, poor rigidity, and is easy to deform, which affects subsequent construction.
In particular, the construction of the curved section needs to be assembled into a curved rail row before laying on site. The construction is complicated and the accuracy is not easy to guarantee

Method used

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  • Method for constructing small-radius curve ballastless track
  • Method for constructing small-radius curve ballastless track
  • Method for constructing small-radius curve ballastless track

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach

[0060] Figure 1 to Figure 4b shown, including steps:

[0061] Construction preparation:

[0062] Acceptance of bridge projects, layout of measurement control points and retesting, concrete mix ratio test, inspection and evaluation of overall ballast bed laying conditions, etc.

[0063] Work surface cleaning:

[0064] In order to ensure a good connection between the concrete of the overall ballast bed and the bridge deck, the contact surface of the bridge deck is chiseled, the accumulated water is drained, and the scum, dust and sundries are removed with high-pressure air to ensure that the old and new concrete have strong adhesion and ensure Overall track bed construction quality. Check the pre-embedded bars one by one, straighten them according to the design requirements, and derust the corroded steel bars.

[0065] Measuring and setting out:

[0066] Measure and release the control points of the track center line on the beam surface every 10m by measuring the control p...

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Abstract

The invention discloses a method for constructing a small-radius curve ballastless track. The method comprises the steps of construction preparation, working face cleaning, measuring paying off, reinforced banding, multifunctional track adjuster erecting, benchmark track erecting and adjusting, servo rail erecting and adjusting, sleeper fastener suspending, formwork erecting, a track panel fine adjusting and locking, concrete casting, concrete curing, and multifunctional track adjuster and formwork dismounting. The method is used for constructing the small-radius curve ballastless track of an urban railway system, and capable of achieving small-radius non-track construction in the field of the urban railway system, and the minimum construction curve radius can reach 100 m.

Description

technical field [0001] The invention relates to an urban rail transit construction technology, in particular to a construction method for a small-radius curved ballastless track. Background technique [0002] At present, urban rail transit mostly uses simple rail support frames for ballastless track construction. The support frame has a simple structure, poor rigidity, and is easy to deform, which affects subsequent construction. In particular, the construction of the curved section needs to be assembled into a curved rail row and then laid on site. The construction is complicated and the accuracy is not easy to guarantee. Contents of the invention [0003] The object of the present invention is to provide a construction method of a small-radius curved ballastless track with convenient construction and high precision. [0004] The purpose of the present invention is achieved through the following technical solutions: [0005] The construction method of the small-radius c...

Claims

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Application Information

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IPC IPC(8): E01B29/00E01B29/05
CPCE01B29/005E01B29/16E01B35/02E01B2204/10
Inventor 王浩张立青孙世豪章远方耿冬梅纪博林周衍领姚坤峰严振林万鹏王德乾赵博刘巍贺春龙余振华
Owner 北京铁五院工程机械有限公司
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