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Structure and method for improving connecting performance of CFT pillow type ballastless track and lower foundation

A technology of ballastless track and connection performance, applied in the direction of track, road, ballast layer, etc., can solve the problems of high cost, large working space, and difficult control, and achieve simple construction, increased contact area, and low cost Effect

Pending Publication Date: 2020-11-03
CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Manual roughening is not easy to control, and there are uneven phenomena; mechanical chiseling is efficient, but the work space is large, and special personnel are required to carry out safety management and command construction, and the cost is relatively high

Method used

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  • Structure and method for improving connecting performance of CFT pillow type ballastless track and lower foundation
  • Structure and method for improving connecting performance of CFT pillow type ballastless track and lower foundation
  • Structure and method for improving connecting performance of CFT pillow type ballastless track and lower foundation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Such as Figure 1-3 As shown, the present invention provides a structure for improving the connection performance between the CFT pillow ballastless track and the lower foundation. In the lower foundation 1, the area 2 (the size is 6150× 2400mm), a number of bosses 3 protruding upward from the reference surface of the lower foundation 1 are evenly arranged in a matrix, and grooves 4 are formed between adjacent bosses 3, and grooves 4 of the grooves 4 The bottom surface is flush with the reference plane of the lower foundation 1 ; the poured concrete of the ballast bed slab covers and fills the boss 3 and the groove 4 , and is connected with the lower foundation 1 .

[0036] The size of the boss matrix is ​​6050×2350mm, the vertical distance from the sideline of the area 2 is 50mm, and the horizontal distance is 25mm.

[0037] Preferably, the boss 3 is a prism, and the area of ​​the upper surface of the prism is smaller than the area of ​​the lower surface. Preferably,...

Embodiment 2

[0044] Such as figure 1 , 3 , 4, the present invention provides a structure that improves the connection performance between the CFT pillow ballastless track and the lower foundation. 6150×2400mm), a number of bosses 3 protruding upward from the reference surface of the lower foundation 1 are uniformly arranged in a matrix, and grooves 4 are formed between adjacent bosses 3, and the grooves The bottom surface of 4 is flush with the reference plane of the lower foundation 1; the pouring concrete of the ballast bed slab covers and fills the boss 3 and the groove 4, and is connected with the lower foundation 1.

[0045] Preferably, the lower foundation 1 is a bridge beam surface.

[0046] The size of the boss matrix is ​​6050×2350mm, the vertical distance from the sideline of the area 2 is 50mm, and the horizontal distance is 25mm.

[0047] Preferably, the boss 3 is a prism, and the area of ​​the upper surface of the prism is smaller than the area of ​​the lower surface. Pref...

Embodiment 3

[0054] Such as figure 1 , 3 , 5, the present invention provides a structure for improving the connection performance between the CFT pillow ballastless track and the lower foundation, in the lower foundation 1, the area 2 (the size of which is 6150×2400mm), a number of bosses 3 protruding upward from the reference surface of the lower foundation 1 are uniformly arranged in a matrix, and grooves 4 are formed between adjacent bosses 3, and the grooves The bottom surface of 4 is flush with the reference plane of the lower foundation 1; the pouring concrete of the ballast bed slab covers and fills the boss 3 and the groove 4, and is connected with the lower foundation 1.

[0055] Preferably, the lower foundation 1 is a tunnel invert.

[0056] The size of the boss matrix is ​​6050×2350mm, the vertical distance from the sideline of the area 2 is 50mm, and the horizontal distance is 25mm.

[0057] Preferably, the boss 3 is a prism, and the area of ​​the upper surface of the prism ...

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Abstract

The invention discloses a structure for improving the connection performance of a CFT pillow type ballastless track and a lower foundation, and the structure is characterized in that a plurality of bosses protruding upwards from the reference surface of the lower foundation are uniformly arranged in a matrix form in an area, below a roadbed slab of the CFT pillow type ballastless track, in the lower foundation, and grooves are formed between adjacent bosses; the bottom surface of each groove is flush with the reference surface of the lower foundation; the bosses and the grooves are covered andfilled with pouring concrete of the roadbed slab, the contact area between the track structure and the surface of the foundation is increased, the lower foundation and the post-poured track structureare better connected together, and the locking effect is achieved. According to the structure, the connecting effect between the track structure and the lower foundation is enhanced, longitudinal andtransverse resistance of the track structure is increased, and plane displacement of the track structure is limited; meanwhile, construction is easy and convenient, cost is low, and large mechanicaloperation is not needed. The structure only needs to be machined in a factory, so the working procedures of field operation are reduced, and the controllability is high.

Description

technical field [0001] The invention belongs to the field of new ballastless tracks, and in particular relates to a structure and a method for improving the connection performance between a CFT pillow type ballastless track and a lower foundation. Background technique [0002] At present, for the CFT pillow ballastless track, the connection methods between the track structure and the lower foundations such as bridge beam surfaces and tunnel inverts mainly include setting reserved steel bars on the foundation surface and roughening. [0003] Although the former is easy to construct, its connection ability is not strong. [0004] The latter mainly has two forms of artificial napping and mechanical chiseling. Manual roughening is not easy to control, and there are uneven phenomena; although mechanical chiseling is efficient, but the work space is large, and special personnel are required to carry out safety management and command construction, and the cost is relatively high. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01B1/00E01B2/00
CPCE01B1/002E01B2/00
Inventor 孙立王森荣闫亚飞李启航李秋义杨艳丽朱彬张世杰吴欢张育红丁正全
Owner CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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