Concrete track slab prefabricating construction method of CRTS I type slab ballastless track

A slab ballastless track and concrete technology, which is used in manufacturing tools, ceramic molding machines, etc., achieves the effects of high density, high blanking efficiency, and guaranteed accuracy

Inactive Publication Date: 2010-09-15
CHINA STATE CONSTRUCTION ENGINEERING CORPORATION +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a CRTS I type with high construction efficiency, irregular work and rest time, easy labor organization in the production pr

Method used

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  • Concrete track slab prefabricating construction method of CRTS I type slab ballastless track
  • Concrete track slab prefabricating construction method of CRTS I type slab ballastless track
  • Concrete track slab prefabricating construction method of CRTS I type slab ballastless track

Examples

Experimental program
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Effect test

Example Embodiment

[0043] Example 1

[0044] The CRTS I type slab-type ballastless track concrete track slab prefabrication method of this embodiment is constructed in winter, and the temperature is lower than 5°C. It includes the following steps (the process flow chart is as follows: figure 2 Shown):

[0045] (1) Preparation of steel skeleton

[0046] (1-1) Technical requirements for steel bar raw materials

[0047] The steel bars must comply with the current relevant national regulations and the requirements of the "Temporary Technical Requirements for CRTS I Slab Ballastless Concrete Track Slabs for Passenger Dedicated Railways". The prestressed tendons are made of low-relaxation unbonded prestressed steel bars, with a nominal diameter of 13mm, and the surface of the steel bars must be free from scratches or other defects; PC steel bars have tensile strength ≥1420Mpa, yield strength ≥1280Mpa, and elongation at break ≥7%; others The physical and mechanical properties should meet the relevant require...

Example Embodiment

[0315] Example 2

[0316] The CRTS I type slab ballastless track concrete track slab prefabrication method of this embodiment is constructed in summer, and the temperature is higher than 5°C. It includes the following steps (the process flow chart is as follows: figure 2 Shown):

[0317] (1) Preparation of steel frame;

[0318] (2) Install the steel bar skeleton into a steel mold, the steel mold is sprayed with isolating agent and installed with embedded casing;

[0319] (3) Wearing PC steel rods and anchoring pads: The PC steel rods of the track plate mold disclosed in the patent number 200920302254.3 are used for quick positioning and fixing bolts, which can quickly realize the rapid and accurate positioning and positioning of the PC steel rods and anchor pads during installation. Fastening, and quick disassembly can be realized when disassembling the mold, realizing the needs of fast and efficient construction. It has the characteristics of simple structure and high efficiency; t...

Example Embodiment

[0346] Example 3

[0347] The CRTS I type slab-type ballastless track concrete track slab prefabrication method of this embodiment is constructed in summer and the temperature is higher than 5°C. It includes the following steps (the process flow chart is as follows: figure 2 Shown):

[0348] (1) Preparation of steel frame;

[0349] (2) Install the steel bar skeleton into a steel mold, the steel mold is sprayed with isolating agent and installed with embedded casing;

[0350] (3) Wearing PC steel rods and anchoring pads: The PC steel rods of the track plate mold disclosed in the patent number 200920302254.3 are used for quick positioning and fixing bolts, which can quickly realize the rapid and accurate positioning and positioning of the PC steel rods and anchor pads during installation. Fastening, and quick disassembly can be realized when disassembling the mold, realizing the needs of fast and efficient construction. It has the characteristics of simple structure and high efficienc...

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Abstract

The invention relates to a concrete track slab prefabricating construction method of a CRTS I type slab ballastless track. The method comprises the following steps of: (1) weaving a steel reinforcement framework; (2) mounting the steel reinforcement framework in a steel mould, wherein the steel mould is internally sprayed with a separant and provided with a pre-embedded sleeve; (3) penetrating a PC (Prestressed Concrete) steel rod and mounting an anchor backing slab; (4) pre-tightening the PC steel rod; (5) mounting a hoisting nut, a spiral bar and a grounding terminal nut; (6) testing an insulation resistor; (7) pouring concrete and vibrating; (8) plastering the surface; (9) maintaining by using steam; (10) dismounting fixing bolts of a pre-embedded piece; (11) demoulding: cleaning the pre-embedded piece and a template, closing the mould, spraying the separant in the steel mould and mounting the pre-embedded sleeve for later use; (12) overturning and examining shape: turning over the CRTS I type slab ballastless track contrete track slab obtained in the step (11) and examining the shape and the appearance; (13) stretching by prestress; (14) sealing the anchor; (15) maintaining in a water pool; and (16) storing in a slab storage area.

Description

technical field [0001] The invention relates to a method for manufacturing a slab-type ballastless track, in particular to a method for prefabricating a CRTS I-type slab-type ballastless track concrete track slab. Background technique [0002] As the ballasted track gradually loosens due to the repeated passage of trains, the track loses its smoothness and affects the comfort of passengers. At the same time, it increases the maintenance and repair workload of the line. The stability, smoothness and less maintenance requirements. Compared with the ballasted track, the ballastless track has better integrity, stability and durability. Although the technology is complex and the one-time investment is greater than that of the ballasted track, it has a long service life cycle, less maintenance, and is basically maintenance-free , can effectively alleviate the difficulty of line maintenance operations caused by increased speed, increased traffic density, shorter and shorter mainte...

Claims

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Application Information

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IPC IPC(8): B28B23/04
Inventor 张鹏何敏王圣林刘衍文徐细军刘歆泽王金柱李拴虎王朝旭肖绪文宋中南于震平
Owner CHINA STATE CONSTRUCTION ENGINEERING CORPORATION
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