Drainage structure for integral ballast bed turnout area of freight yard railway in harbor district and construction method

Abstract

The invention discloses a drainage structure for the integral ballast bed turnout area of a freight yard railway in a harbor district and a construction method. The structure comprises a concrete cushion layer, a ballast bed turnout area lower structure composed of a concrete supporting layer and a ballast bed turnout area upper structure composed of an upper reinforced concrete layer and a lower reinforced concrete layer which are sequentially arranged above an existing sand layer foundation; sleepers and steel rails are laid on a lower reinforced concrete layer of the ballast bed turnout area upper structure, and turnout steering switch rails of the steel rails are connected with a point switch through a point switch connector in a turnout center point switch area; in a frog outer side connection area, the upper reinforced concrete layer of the upper structure is poured on the inner side, between the stock rails and the outer side of the stock rails of the steel rails; and in the switch center switch area, the upper reinforced concrete layer of the upper structure is poured between stock rails of the steel rails and on the outer side of the stock rails of the steel rails. According to the method, special treatment is carried out on part of the integral ballast bed turnout area, so that the waterproof and drainage range of the turnout area is reduced, the drainage speed is increased, clogging is avoided, and the vehicle transportation passing interval and the transportation capacity of a harbor district goods yard are increased.

Description

technical field [0001] The invention relates to the technical field of drainage construction of railway traffic turnout areas, in particular to a drainage structure and construction method of a railway integrated track bed turnout area of ​​a port area freight yard. Background technique [0002] In the rail transit line, each group of turnouts needs to be equipped with a switch machine. The switch machine is fixed on the outside of the basic rail, and the pull bar of the switch machine needs to pass through the basic rail and be connected to the steering tip rail with a coupling piece. When the signal is input to pull the command, the pull bar pulls the tip rail and locks it, so as to realize the switch. Therefore, concrete cannot be poured between the basic rails, and water accumulation is likely to occur between the basic rails. The existing drainage structure of the turnout area of ​​the integrated track bed mostly adopts the foundation pit and the drainage pit to form a...

AI Technical Summary

Problems solved by technology

Therefore, concrete cannot be poured between the basic rails, and water accumulation is easy to occur between the basic rails

The existing integrated drainage structure in the turnout area of ​​the trackbed mostly adopts foundation pits and drainage pits to form a comprehensive drainage system. However, under the special working conditions of the railway in the port area, the rainfall is large and there are many impurities in the ground water, and the conventional drainage system is prone to drainage. Unsmooth and serious blockage of drainage channels, which in turn cause damage to the expensive rails in the fork area, seriously affecting the service life of the rails in the fork area

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