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A grouting repair method for the gap between the end of the ballastless track slab and the mortar cushion

A ballastless track and repair method technology, applied in the direction of track, ballast layer, road, etc., can solve the problems of high cost, waste of manpower and material resources, etc., achieve convenient production, save manpower and material resources, and omit subsequent grinding and color treatment Process effect

Inactive Publication Date: 2017-03-22
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is too expensive and will waste a lot of manpower and material resources

Method used

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  • A grouting repair method for the gap between the end of the ballastless track slab and the mortar cushion
  • A grouting repair method for the gap between the end of the ballastless track slab and the mortar cushion
  • A grouting repair method for the gap between the end of the ballastless track slab and the mortar cushion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] see figure 1 , figure 2 and image 3 . The ballastless track on the high-speed rail construction site adopts a type II track plate 5 , the mortar cushion layer 6 is below it, and the lower layer of the mortar cushion layer 6 is a base plate 7 . The upper part of track plate 5 connecting seams is wide seam, and width is 21 centimeters, and the connecting steel bar 4 that stretches out from track plate 5 is arranged in; The lower half is narrow seam, and width is 10 centimeters. After the mortar cushion 6 is solidified, it is sometimes found that there is a debonding of the mortar cushion 6 and the track plate 5 in the narrow seam of the track plate 5 joint, and there is a gap 8 between the two. The repair comprises the following steps: 1. prepare a side length of a cross-section as a square wooden strip 1 of 5 centimeters, whose length is 20 centimeters larger than the width of the track plate 5, so that after the square wooden strip 1 is installed, each side can str...

Embodiment 2

[0024] This embodiment is an amendment to Embodiment 1, see Figure 4 , in step ⑤, use the rubber plate that thickness is 5 millimeters instead, as elastic backing plate 10, plate width 5 centimeters, have the corresponding hole on it with the square wooden bar, after sticking, its edge and square wooden bar 1 The other two adjacent sides are flush, and the holes on it communicate with the opening 2 on the square bar 1 .

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Abstract

The invention discloses a grouting repair method for gaps between ends of ballastless track slabs and mortar cushions and belongs to the field of railway engineering. For high-speed railways with ballastless tracks, the track slabs are required to be adjusted accurately during construction, and then asphalt mortar is poured below the track slabs. The mortar cushions can be separated from the track slabs at the ends of partial track slabs after being solidified, and the gaps exist between the mortar cushions and the ends of the track slabs. A connecting groove between every two adjacent track slabs is very narrow in the position and cannot be repaired with a conventional crack repair method. A bent hole is drilled in a square batten, and the periphery of each gap is sealed, so that repair slurry can be pressed in the gap from the upper side conveniently. The gaps in narrow slits are repaired skillfully with the repair method, the repair method can also be generalized to conventional crack repair, crack repair procedures are simplified, and time and materials are saved.

Description

technical field [0001] The invention relates to a grouting repair method for the gap between the end of a ballastless track slab and a mortar cushion, and belongs to the field of railway engineering. Background technique [0002] With the upsurge of my country's high-speed railway construction, the application of ballastless track is gradually increasing. During the installation process of track slabs, there are temporary connecting grooves between adjacent track slabs, which are also called connecting seams because of their small spacing. After the position of the track slab is precisely adjusted, an asphalt mortar filling layer is poured under it as a mortar cushion. During construction, it is often found that after the mortar is solidified, there is a debonding phenomenon between the end of some track slabs and the mortar cushion, and a gap appears between the two. The gap must be repaired by grouting before pouring concrete in the connecting groove, otherwise, during t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01B1/00
Inventor 魏建东孙晓敏杨飞周小范范兵
Owner ZHENGZHOU UNIV