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Construction method for two-block unballasted track bed board

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 of huge and large project investment

Inactive Publication Date: 2009-08-12
THE 8TH GRP OF CHINA RAILWAY 1ST ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This construction technology is perfected in long-term engineering practice, and all of them adopt mechanized construction; although the construction efficiency is high, the track precision is high, and it can save labor, it requires a lot of special equipment, such as loose pillow devices, tool rails, and transport vehicles. , fine adjustment shaft frame, rough adjustment machine, formwork installation machine, formwork removal and washing machine, concrete pouring machine, folding work tent and measuring equipment, etc. Therefore, the project investment is huge

Method used

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  • Construction method for two-block unballasted track bed board
  • Construction method for two-block unballasted track bed board
  • Construction method for two-block unballasted track bed board

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] Embodiment 1: The construction method of the double-block ballastless track bed slab suitable for the roadbed section track bed slab, the steps are as follows:

[0082] The first step is to clean the base layer and set out the construction line:

[0083] see figure 1 with figure 2 , first remove the scum, dust and sundries on the surface of the support layer 5 of the subgrade section; then carry out construction setting-out positioning on the support layer 5 according to the CPIII control point 14 of the foundation pile control network, and the distance between every about 10 sleepers— 6.4m, stake out the left and right points 16 of the template and the track center point 17, and make these three points on the same section on a straight line; then, pop up the left and right template sidelines 18 and the track centerline with ink lines according to the stakeout points 19 and sleeper axis 20;

[0084] The second step is to place the bottom reinforcement and lay the sl...

Embodiment 2

[0115] Embodiment two: the construction method that is suitable for the double-block type ballastless track bed slab of the bridge section track bed slab, its steps are as follows:

[0116] The first step is to clean the base layer and set out the construction line:

[0117] see figure 1 with image 3 , first remove the scum, dust and sundries on the surface of the bridge deck protection layer 12 of the bridge section; then according to the CPIII control point 14 of the foundation pile control network, carry out construction setting-out positioning on the middle layer 11 of the bridge, every about 10 Distance between sleepers - 6.4m, stake out the left and right points 16 of the formwork and the track center point 17, and make these three points on the same section in a straight line; then, pop up the left and right formwork sidelines 18 with ink lines according to the stakeout points , track centerline 19 and sleeper axis 20;

[0118] The second step is to place the bottom...

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Abstract

The invention relates to a construction method for a double-block-type ballastless track bed slab, which comprises the following steps: 1, clearing a base surface and performing construction lofting; 2, placing a bottom layer of reinforcing steel bars, and laying sleepers; 3, mounting a tool track and adjusting the sleepers; 4, assembling track panels; 5, coarsely adjusting the track panels; 6, binding the reinforcing steel bars and performing earthing welding; 7, mounting templates and finely adjusting the track; 8, casting concrete into the track bed slab; 9, loosening adjusting devices and fasteners, and curing the concrete; and 10, relocking the tool track and completing the measurement. The construction method has the advantages that: the tool track is adopted as a detection standard, so the precise positioning of the track is realized; a frock system is simple, is easy to process and manufacture, has wide commonality, and is not only suitable for construction of the track bed slab in a subgrade section but also suitable for construction of the track bed slab in a bridge section; the construction process is simple and quick, and various working procedures are easily carried out by flow construction; and the construction cost is low, so the construction investment is effectively saved.

Description

technical field [0001] The invention relates to a track foundation construction method, in particular to a construction method for a double-block ballastless track bed slab. Background technique [0002] Traditional railway tracks are composed of ballast beds, sleepers, rails, connectors, etc. The sleepers directly supporting the rails are usually anti-corrosion sleepers, embedded in ballast, and their function is to spread the load on the roadbed. In recent years, in order to meet the needs of locomotive speed increase, ballastless track system has been introduced. The ballastless track system is a kind of integrated under-rail foundation that replaces the ballast on the ballasted line to transfer load. The performance characteristics can well meet the performance requirements of the passenger dedicated line. Double-block ballastless track is a kind of ballastless track system. As the main track system of high-speed railway, it was first used in Germany, and it has been ...

Claims

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Application Information

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IPC IPC(8): E01B29/00
Inventor 汪胜奇刘庆峰贺开伟张开聪黄基富张善高唐凡蒋伟平
Owner THE 8TH GRP OF CHINA RAILWAY 1ST ENG CO LTD
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