High-speed rail curved track and construction method thereof

Abstract

The invention discloses a high-speed railway curve track and a construction method thereof, belongs to the field of railway construction, and aims at achieving the purpose of reducing later excessive single-side track settlement by directly prearranging a support structure underground. The high-speed railway curve track is characterized in that an arc-shaped track bed, double-block sleepers, fasteners and steel rails are included; the upper surface of the arc-shaped track bed is arranged in the mode of inclining towards the arc center, the double-block sleepers are cast on the upper surface of the arc-shaped track bed, and the steel rails are fixedly connected to the double-block sleepers through the fasteners; the side face, far away from the arc center, of the arc-shaped track bed is provided with a plurality of limiting columns and vertical support plates, gaps are formed between the vertical support plates and the arc-shaped track bed, and the ends, far away from the arc-shaped track bed, of the limiting columns abut against the side faces of the vertical support plates.

Description

technical field [0001] The invention relates to the field of railway construction, in particular to a high-speed railway curved 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, r...

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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 arc 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 the 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.

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