Curved railway track and construction method thereof

Abstract

The invention discloses a railroad curve track and a construction method thereof, and belongs to the field of railroad construction. The railroad curve track and the construction method have the advantages of directly presetting a supporting structure and reducing later ballast track single-side excessive settlement. According to the technical scheme, the track comprises an arc-shaped ballast track bed and multiple fixed sleepers inclined to one side of the arc center of the ballast track bed, the fixed sleepers are sequentially distributed in the extending direction of the ballast track bed and provided with buckles, and steel rails are fixed to the fixed sleepers through the buckles. The ballast track bed is further provided with multiple limiting sleepers, and at least two fixed sleepers are arranged between the adjacent limiting sleepers at intervals. Each limiting sleeper comprises a supporting block in butt joint with the corresponding steel rail, and a limiting block penetrating through the ballast track bed. The limiting blocks are integrally arranged at the bottoms of the supporting blocks. The side faces, away from the arc center of the ballast track bed, of the limiting blocks are provided with supporting columns, and vertical supporting plates are arranged at the ends, away from the limiting blocks, of the supporting columns.

Description

technical field [0001] The invention relates to the field of railway construction, in particular to a curved railway track and a construction method thereof. Background technique [0002] With the rapid development of the economic level, the train has such a huge advantage in the field of daily passenger and freight transportation. When the train is running, it often encounters cornering situations. Therefore, it is necessary to set the entire track to be more efficient when the train is cornering. The arc-shaped track with more over-bending radius, and when the train is running on the arc-shaped track, due to the action of inertial centrifugal force, the rolling stock is pushed to the outer rail, which increases the pressure on the outer rail, causing discomfort to passengers, displacement of goods, etc. , and will increase the loss of the outer rail and rail, resulting in a decrease in stability and safety. Therefore, a large speed reduction is often required, resulting in...

AI Technical Summary

Problems solved by technology

[0004] However, due to the long-term operation of the locomotive, especially during the initial operation after the track is installed, the track will undergo a certain degree of settlement, and the pressure on the outer rail will be slightly larger, so the outer side of the track is most likely to produce a large settlement, resulting in track The settlement speed on both sides is different, so before there is no regional stability, it is easy to reduce the design effect of the superelevation design of the outer rail of the arc track. In order to reduce this situation, most of them increase the width of the track bed during construction to reduce settlement. But the effect is not great, and it occupies a large area of ​​land, and the vegetation is reduced, but it is easy to cause soil erosion and increase settlement

[0005] In order to make up for the problem of reduced design effectiveness of the superelevation design of the outer rail of the curved track, there are currently methods of direct compensation for the outer rail by using lifting equipment, but the compensation equipment is basically aimed at the cornering speed of some locomotives greater than the preset cornering speed of the original track. It plays a compensatory role when cornering, and is not suitable for long-term working conditions. For example, the Chinese patent application number 201010576713.4 discloses a method for anti-slipping of the track plate in the ultra-high section of the ballastless track. Balance the applied pressure to achieve a stable track. The range of these adjustments is very limited. When the track settlement range is too large, it often cannot meet the needs. It is a remedial method in the later stage, and the cost of track and equipment maintenance is very high, especially It is a ballasted track. Since the curved ballast bed is stacked by stone ballast, when the vehicle passes by, the ballast is easily moved and expanded when the vehicle passes by, resulting in a drop in height and more track settlement.

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