Port exhaust assembly used for ballastless track construction and track construction method

Abstract

The invention relates to a port exhaust assembly used for ballastless track construction and a track construction method. The port exhaust assembly comprises a plastic foam board and a plurality of end exhaust pipes, wherein the plastic foam board is arranged on the end face of a track board in a fit manner, and a plurality of openings are concavely formed on the edge of the lower end of the plastic foam board upwards at intervals; an inclined opening is formed at one end of each end exhaust pipe; one end exhaust pipe is inserted in each opening in the plastic foam board in an inclined manner; the inclined openings of the end exhaust pipes are positioned at the lower end; and the inclined openings face upward. The port exhaust assembly used for ballastless track construction disclosed by the invention is arranged on the end face of the track board and is capable of exhausting air below the central part of both ends of the track board in time during the process of pouring cement and emulsifying asphalt and mortar so that the degree of density at the part is the same as that of other parts; and therefore, the quality and running safety of the whole engineering can be improved. Moreover, the construction method has the steps mostly the same as the steps of the conventional construction method; and therefore, the construction progress cannot be influenced, and the constriction cost cannot be increased.

Description

technical field [0001] The invention belongs to the technical field of railway construction, in particular to a port exhaust assembly for ballastless track construction and a track construction method. Background technique [0002] Ballastless track is an advanced track technology in the world today. It is a track structure type composed of concrete or asphalt mortar instead of loose ballast bed. It has high track stability, good rigidity uniformity, strong structural durability and maintenance The workload is significantly reduced, and it is mainly used for high-speed railways with a train speed of more than 200 kilometers per hour. figure 1 It is a schematic diagram of the horizontal structure of a ballastless track in the prior art. figure 2 It is a sectional view of the prior art ballastless track transverse structure installed with edge-sealing angle steel. image 3 It is a sectional view of the longitudinal partial structure of the prior art ballastless track instal...

AI Technical Summary

Problems solved by technology

However, the above-mentioned construction method has the following problems: in the process of pouring cement emulsified asphalt mortar, the air between the support layer 1 and the track slab 3 will go out from the plurality of air vents 10 arranged on the edge sealing angle steel 8 Discharge, after the cement emulsified asphalt mortar is filled, all vent holes 10 are sealed

However, during the construction, we found that since there is no vent hole between the adjacent track slabs 3, the air in this part cannot be discharged in time. This situation will cause the cement emulsified asphalt mortar under the center of the two ends of the track slab 3 to be dense. If the degree is not enough, it will undoubtedly affect the quality and operation safety of the whole project

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