Reverse operating construction method for pouring monolithic track bed in separated tunnel of metro section

A technology of integral ballast bed and construction method, applied in the directions of roads, buildings, tracks, etc., can solve the problems of easy cracking of ballast concrete, slow construction progress, pollution on construction site, etc., so as to shorten the pumping distance, increase the load capacity, and reduce the construction The effect of pollution

Active Publication Date: 2018-02-02
CHINA RAILWAY NO 17 BUREAU GRP
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Problems solved by technology

[0007] In order to solve the problems of slow construction progress, easy cracking of ballast concrete, serious pollution at the construction site, high labor intensity and high cost in the pouring of

Method used

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  • Reverse operating construction method for pouring monolithic track bed in separated tunnel of metro section
  • Reverse operating construction method for pouring monolithic track bed in separated tunnel of metro section
  • Reverse operating construction method for pouring monolithic track bed in separated tunnel of metro section

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Embodiment Construction

[0019] The reverse construction method of integral ballast bed pouring in the separate tunnel of the subway section, a. Assemble the rail bar and hoist it on the rail transport vehicle, and then push the rail bar to the track laying work surface by the rail transport vehicle;

[0020] b. The rail row is gradually laid in place towards the far end of the tunnel by the track laying unit, and sand pillows 16 are laid at intervals below the sleepers 15 at positions corresponding to the rails 14 until the section is connected to form a longitudinal temporary rail transit logistics channel;

[0021] c. Set splints on both sides of the rail waist at the joint of any two rails 14, and use U-shaped clamps to fix them firmly;

[0022] d. Make the rail-type concrete pump pipe bracket. The rail-type concrete pump pipe bracket is composed of several pump pipe bracket bodies. The pump pipe bracket body includes the frame 1, the left and right sides of the bottom end of the frame 1 The wheel...

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Abstract

The invention specifically relates to a reverse operating construction method for pouring a monolithic track bed in a separated tunnel of a metro section, and solves the problems of slow constructionprogress, easiness in cracking of concrete of the track bed, serious pollution at the construction site, high labour intensity and high costs in pouring of the monolithic track bed in the separated tunnel of the metro section currently. The reverse operating construction method comprises: a, assembling a track skeleton and pushing the track skeleton to a track-laying operation surface; b, beddingsand pillows and paving the track skeleton in place; c, longitudinally firmly connecting the joint of two rail; d, manufacturing a rail-mounted concrete pump pipe bracket; e, manufacturing a rail-mounted concrete three-point material-deployment funnel; f, performing segment-by-segment track lifting from the distal end of the tunnel, then adjusting the spatial position, and arranging a downhill ramp; g, pushing the rail-mounted concrete pump pipe bracket and the rail-mounted concrete three-point material-deployment funnel to a track bed pouring area; and h, performing precise concrete materialdeployment and pouring on the track bed by manually controlling the positions of an arc material-deployment chute and a discharge port. The reverse operating construction method avoids the quality problem of track bed cracking inducted by the fact that the track bed bears loads too early.

Description

technical field [0001] The invention relates to a construction method for an integral ballast bed of a subway, in particular to a reverse construction method for pouring an integral ballast bed in a subway section-separated tunnel. Background technique [0002] The subway has become an important means of transportation in the city. At present, shield machines are mostly used for excavation in subway sections, and arc-shaped segments are installed simultaneously to form separate tunnels with circular sections. [0003] Long sleeper embedded cast-in-situ concrete monolithic trackbeds are often used in subway tunnels. The construction points are as follows: 25m standard steel rails and prefabricated sleepers are used to form rail rows, and the rail rows are sent to the laying site to be laid in place one by one, structural steel bars are bound, and measurement methods are used Cooperate with the regulator to position the rail row in space, and the vertical cast-in-place concret...

Claims

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Application Information

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IPC IPC(8): E01B29/00
CPCE01B29/005
Inventor 李刚戴志勇王新民黄海斌雷平荣高娃黄丙寅
Owner CHINA RAILWAY NO 17 BUREAU GRP
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