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A kind of grouting bag for ballastless track grouting lifting and its production and use method

A ballastless track and grouting lifting technology, which is applied in the direction of track, track laying, track maintenance, etc., can solve the problems of limited increase in the adjustable amount of the fastener system, difficulty in realizing the track structure, and many grout spills, etc., to achieve Significant technical and economical efficiency, material cost savings, and the effect of avoiding excessive local elevation

Active Publication Date: 2016-06-29
RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after increasing the adjustable amount of the fastener system, the pads of the fastener system need to use integral pads to maintain the stability of the track structure. Due to the different settlements in different locations, the overall pads used in each fastener system The thickness of the fastener system is not the same. In this way, different overall pads need to be molded separately, which is costly. In addition, the increase in the adjustable amount of the fastener system is limited. For the track structure that continues to sink with the extension of operation time , this approach also has limitations
Another method is to use grouting materials for grouting lifting and filling, such as the patent "Application of injection method to lift the settlement of railway ballastless track bed settlement system and method (201310027717.0)", patent "high-speed railway ballastless track lifting polymer Grouting method (201310123669.5), but these methods have problems such as uncontrollable expansion of the grout at the bottom of the ballastless track, poor lifting effect, and difficulty in achieving precise and controllable lifting of the track structure; moreover, there are many grout spills during the grouting process , material waste is large, and economic cost is high

Method used

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  • A kind of grouting bag for ballastless track grouting lifting and its production and use method
  • A kind of grouting bag for ballastless track grouting lifting and its production and use method
  • A kind of grouting bag for ballastless track grouting lifting and its production and use method

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Embodiment 1

[0025] Embodiment 1 of the present invention provides a method for making and using a grouting bag for lifting a single-line subsidence ballastless track in a straight line section. The method includes the following contents:

[0026] (1) Before the lifting, the smoothness of the ballastless track structure in the subsidence area is measured with an electronic level, and the design lifting height corresponding to each rail platform (001) from 1# to 20# is determined, as shown in figure 1 , as shown in Table 1; according to the design lifting height, determine the layout of the grouting holes and the number of each hole as follows figure 2 As shown, the lifting grouting hole (003) is located under each rail platform (001), the hole diameter is 30 mm, and the length is 1 cm longer than the lateral width of the bottom plate (002), corresponding to numbers E1 to E20.

[0027] (2) According to the design lifting height, high-strength polyester non-woven fabrics are used to make gr...

Embodiment 2

[0034] Embodiment 2 of the present invention provides a method for making and using a grouting bag for lifting and repairing ballastless tracks with large differences in lateral settlement:

[0035] The material of the grouting bag is high-strength acrylic non-woven fabric; the production and use methods are basically the same as in Example 1, except that due to the large difference in the lateral settlement of the ballastless track, the grouting bag is in the shape of a conical frustum, and its Schematic such as Figure 5 As shown, when placing the grouting bag, the end with slightly larger diameter of the bag body is located on the side with larger settlement of the ballastless track, and the end with slightly smaller diameter of the bag is located at the side with smaller settlement of the ballastless track; during grouting, pass The active control and binding effect of the bag on the grouting material realizes the controllable lifting of the ballastless track, which is mor...

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Abstract

The invention relates to a grouting bag for ballastless track grouting and its production and use method. It is sewn from materials with high strength, thin thickness, good air permeability and small dry heat shrinkage rate. According to the size and settlement of the ballastless track structure, one end of the grouting bag is closed, and the other end is open. The open end is used to insert the grouting pipe, and the mouth of the grouting bag is tied around the grouting pipe, and the rest of the bag body is tight. Fold and wrap around the grouting pipe, and number the cloth bags of corresponding shape and size according to the amount of lift; before grouting, insert the corresponding numbered grouting bag inserted into the grouting pipe into the corresponding numbered grouting hole under the ballastless track Middle; during grouting, the grouting bag is fully stretched to the designed shape and size under the grouting pressure, thereby realizing precise and controllable lifting of the upper ballastless track; then the grouting material in the grouting bag hardens rapidly, and the ballastless track Support and locate in a predetermined position.

Description

technical field [0001] The invention belongs to the technical field of maintenance and repair of ballastless tracks of high-speed railways, and in particular relates to a grouting bag used for grouting and lifting of ballastless tracks in subsidence and a method for making and using the same. Background technique [0002] Ballastless track is the most advanced track technology in the world today, and it is the main track structure type used in the construction of high-speed railways in my country. my country's new Beijing-Tianjin, Shanghai-Hangzhou, Shanghai-Nanjing, Wuhan intercity, Zhengxi, Wuhan-Guangzhou, Beijing-Shanghai, High-speed railways such as Harbin-Dalian, Jingshiwu, Hangzhou-Ningbo, Ninghang, Hefu, Jinqin, Shanghai-Kunming, Lanxin, Haqi, Ning'an, Zhengxu, Shendan all use ballastless track type. Ballastless track has technical advantages such as high smoothness, good stability, long service life, good durability, and less maintenance workload. The railways have ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01B29/04
Inventor 郑新国刘竞谢永江翁智财李书明曾志朱长华仲新华杨德军王月华
Owner RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI