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Ballastless track steel reinforced concrete pile-net construction method

A reinforced concrete and construction method technology, applied in sheet pile walls, foundation structure engineering, construction, etc., can solve the problem of not being able to meet the requirements of ballastless track subgrade reinforcement, polluting the working surface and the surrounding environmental water system, multiple construction machinery and labor, etc. problems, to achieve the effect of preventing collapse and shrinkage, reducing construction machinery and labor, and meeting reinforcement requirements

Active Publication Date: 2009-08-05
CHINA RAILWAY 18TH BUREAU GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The current construction method of reinforced concrete pile network for ballastless track requires more construction machinery and labor, and will damage the embankment that has been filled, pollute the working surface and the surrounding environmental water system
The construction process is complicated, the construction cost is high, the construction efficiency is low, the settlement after construction is large, and the requirements for reinforcement of ballastless track subgrade cannot be met

Method used

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  • Ballastless track steel reinforced concrete pile-net construction method
  • Ballastless track steel reinforced concrete pile-net construction method

Examples

Experimental program
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Effect test

Embodiment Construction

[0016] The comprehensive test section of the ballastless track of the Suiyu Railway was carried out on the basis of the Class I railway that has already started construction. Before the construction of the test section, part of the subgrade in the test section had been filled to a distance of 5-6m from the subgrade surface. In order to meet the technical requirements for the laying of the ballastless track For the already filled embankment, impact roller compaction is used for additional compaction, and then the reinforced concrete pile network structure is set up for foundation reinforcement, and the embankment is filled according to the technical standard of ballastless track subgrade.

[0017] 1. Construction preparation:

[0018] (1) In order to eliminate the negative friction effect of the filling soil after the pile network construction is completed, after the site is leveled before construction, the filled embankment is firstly compacted by impact rolling and compacted b...

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Abstract

A construction method of the reinforced concrete pile mesh of a ballastless track is carried out in five steps: (1) a long spiral borer is emplaced, so that a boring rod is aligned with the center of a pile position; (2) the hole-forming operation is carried out; (3) the concrete of the pile body is perfused; (4) a steel reinforcement cage is inversely inserted; (5) the finished pile is detected. The present invention has six advantages: (1) because a dry hole-forming technique is applied, the filled subgrade is not destroyed; (2) by applying the long helix driller and boring current values controlling the embedment depth in rock, the present invention resolves the problem that in the process of boring, the embedment depth in rock cannot be directly judged by rock debris; (3) the problems of hole collapse and hole shrinkage can be prevented; (4) the construction equipment and the labor power are reduced, the filled road embankment is not destroyed, the working surface and the surrounding environment and water system are not polluted, the working surface is clean and the labor intensity of workers is decreased; (5) the construction cost is reduced and the work efficiency is increased by 35 percent; (6) post-construction settlement is less and the reinforcement requirements of the subgrade of the ballastless track can be met.

Description

Technical field: [0001] The invention relates to a building construction method, in particular to a ballastless track reinforced concrete pile net construction method. Background technique: [0002] The current construction method of reinforced concrete pile network for ballastless track requires more construction machinery and labor, and will destroy the embankment that has been filled, and pollute the working surface and the surrounding environmental water system. The construction process is complicated, the construction cost is high, the construction efficiency is low, the settlement after construction is large, and it cannot meet the requirements of ballastless track subgrade reinforcement. Invention content: [0003] The purpose of the present invention is to overcome the deficiencies in the above-mentioned prior art, and provide a method for constructing ballastless track reinforced concrete pile nets, which has simple construction procedures, low construction cost, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D5/36
Inventor 王清江贾振功
Owner CHINA RAILWAY 18TH BUREAU GRP CO LTD
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