Method for treating cracks at seam positions of CRTS II ballastless track plates

A slab ballastless track and joint technology, which is used in tracks, track maintenance, roads, etc., to prevent aging, reduce repair difficulty, and achieve good mechanical properties.

Inactive Publication Date: 2015-11-18
CENT SOUTH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the many problems existing in the treatment of cracks in the wide joints of the existing CRTSII slab ballastless track structure, the purpose of the present invention is to provide a method for repairing cracks

Method used

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  • Method for treating cracks at seam positions of CRTS II ballastless track plates
  • Method for treating cracks at seam positions of CRTS II ballastless track plates
  • Method for treating cracks at seam positions of CRTS II ballastless track plates

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Embodiment 1

[0037] A wide joint crack repair operation was carried out on the site of a CRTSII slab ballastless track for passenger trains. The crack width was 0.3mm and the working temperature was 20°C. First, use a manual cutting machine to cut a crack with a width of 5 mm and a depth of 20 mm along the crack between the old and new concrete; remove the solid particles inside the cut, rinse with water, and blow dry. After cleaning, glue on both sides of the crack. Paste anti-pollution tape with a spacing of about 15mm; inject low-viscosity polyurethane material into the crack with a glue gun to a filling height of about 15mm; after drying, inject high-viscosity silicone waterproof material into the crack, and then smooth the high-viscosity silicone material, peel off the anti-pollution tape, and the repair is complete.

[0038] The invention is suitable for on-site operation requirements of high-speed railway skylights, requires simple tools, convenient, fast and economical construction...

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Abstract

The invention discloses a method for treating cracks at seam positions of CRTS II ballastless track plates. Based on special laws of cracks, the method guarantees the durability of a ballastless track structure by performing special waterproof treatment on cracks. The method for treating cracks comprises the following steps: cutting cracks; treating base surfaces; and pouring low-viscosity polyurethane waterproof material and high-viscosity organosilicon material in the cut cracks. The method is simple in construction, is convenient, economic, durable and reliable, and is suitable for the repairing operation of skylight points of cracks at seam positions of CRTS II ballastless track plates. Through the adoption of the method, the durability of the ballastless track structure can be significantly improved, so that the method is suitable for improving the durability of reinforced concrete structures with a large crack-width variation range.

Description

technical field [0001] The invention relates to a measure for improving the durability of a reinforced concrete structure whose crack width varies greatly, in particular to a method for treating cracks at joints of CRTSII slab ballastless track slabs. Background technique [0002] CRTS Ⅱ type slab ballastless track structure is one of the main track structure types adopted by my country's high-speed railway (passenger dedicated line), and has been applied in Beijing-Tianjin, Beijing-Shanghai, Beijing-Shiwu, Shanghai-Hangzhou, Hangzhou-Ningbo, Hebeng, Jinqin, Hangchang In other high-speed railways (passenger dedicated lines), the total mileage of the application is close to 5,000 kilometers for double lines. The CRTS II slab ballastless track structure has the advantages of high smoothness, strong integrity, and good stability, but its structure is complex, construction process control is difficult, and the cement emulsified asphalt mortar and longitudinal structure are highly...

Claims

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Application Information

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IPC IPC(8): E01B37/00E01B1/00
Inventor 元强刘文涛邓德华谢宏何志勇黄志和
Owner CENT SOUTH UNIV
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