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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 process, poor product quality stability, relatively small labor demand, and low difficulty in personnel organization and coordination. Prefabrication method of concrete track slab for slab ballastless track

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

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Effect test

Embodiment 1

[0044] The CRTS I type slab type ballastless track concrete track slab prefabrication method of the present embodiment is to be constructed in winter, and the temperature is lower than 5 ℃, comprises the following steps (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] Reinforcement bars must meet the requirements of the current relevant national specifications and the "Interim Technical Conditions for Concrete Track Slabs of CRTS I-Type Ballastless Tracks for Passenger Dedicated Railways". The prestressed tendons are made of low-relaxation unbonded prestressed steel rods, with a nominal diameter of 13mm, and no scratches or other defects on the surface of the steel bars; the tensile strength of PC steel rods is ≥1420Mpa, the yield strength is ≥1280Mpa, and the elongation at break is ≥7%; other The physical and mechanical properties should meet the relevant r...

Embodiment 2

[0316] The CRTS I type slab type ballastless track concrete track slab prefabrication method of the present embodiment is to be constructed in summer, and the temperature is higher than 5 ℃, comprises the following steps (process flow chart as follows figure 2 shown):

[0317] (1) Prepare the steel skeleton;

[0318] (2) steel bar skeleton is installed in the steel mold, is sprayed with release agent and is installed with pre-embedded casing in described steel mold;

[0319] (3) Wearing PC steel rods and anchor pads: Using the track plate mold PC steel rods disclosed in the patent No. 200920302254.3 for rapid positioning and fixing bolts, it can quickly and accurately locate and fix PC steel rods and anchor pads during installation. It is fastened and can be quickly disassembled when the mold is disassembled, which meets the needs of fast and efficient construction. It has the characteristics of simple structure and high efficiency; the positioning time of a single PC steel...

Embodiment 3

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

[0348] (1) Prepare the steel skeleton;

[0349] (2) steel bar skeleton is installed in the steel mold, is sprayed with release agent and is installed with pre-embedded casing in described steel mold;

[0350] (3) Wearing PC steel rods and anchor pads: The PC steel rods of the track plate mold disclosed in the patent No. 200920302254.3 are used for rapid positioning and fixing bolts, which can quickly and accurately position and fix the PC steel rods and anchor pads during installation. It is fastened and can be quickly disassembled when the mold is disassembled, which meets the needs of fast and efficient construction. It has the characteristics of simple structure and high efficiency; the positio...

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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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