Precast slab type vibration damping rail structural system and matched construction method

Abstract

The invention relates to a precast slab type vibration damping rail structural system and a matched construction method. The rail structural system consists of steel rails, fasteners, precast slabs, an elastic cushion layer, a sealing sleeve, a longitudinal connecting device, a filling layer and the like, wherein the elastic cushion layer and the precast slabs can be compounded as a whole in a plant. According to the engineering needs, a track board can be reserved with 1-3 holes (for infusing the filling layer and observing an infusing state) which penetrate through the track board in a thickness direction, pre-formed holes for mounting supporting legs, a hole for mounting a measuring and positioning mark, an aligning mark for laying and positioning, a pre-embedded part for composite connecting of the elastic cushion layer, lifting pins for lifting, a pre-embedded part for longitudinally connecting the track board, a pre-embedded part for mounting a contact rail, and the like. The precast track board is laid by adopting laying equipment such as a plate transporter, a crane trolley, a fine-tuning trolley and the like, so that the precast slab type vibration damping rail structural system has the characteristics of a simple construction process, high construction speed, high construction speed, good rail smoothness and low labor intensity; and the convenience problem of replacing the track board and the elastic cushion layer after operation is solved.

Description

technical field [0001] The invention relates to the field of vibration reduction of rail traffic, in particular to a prefabricated slab type vibration reduction track structure system and a supporting construction method. Background technique [0002] With the large-scale network development of urban rail transit, the construction period of urban rail transit is becoming increasingly tight. The construction process of the track structure is closer to the opening and operation time, and the pressure on the construction period is particularly prominent. Generally, the track laying period of about 9 months for a subway line is often compressed. It takes 6 months or even less. The traditional track structure determines the characteristics of many construction operations, manual work, difficult control of construction accuracy and slow construction progress. When the overall construction period and track-laying period are compressed, the construction accuracy and track-laying qua...

AI Technical Summary

Problems solved by technology

[0002] With the large-scale network development of urban rail transit, the construction period of urban rail transit is becoming increasingly tight. The construction process of the track structure is closer to the opening and operation time, and the pressure on the construction period is particularly prominent. Generally, the track laying period of about 9 months for a subway line is often compressed. It takes 6 months or even less. The traditional track structure determines the characteristics of many construction operations, manual work, difficult control of construction accuracy and slow construction progress.

When the overall construction period and track-laying period are compressed, the construction accuracy and track-laying quality are seriously affected, resulting in the deterioration of the smoothness of the line put into operation and the comfort of running vehicles, and the frequent occurrence of track diseases, and the aggravation of environmental vibration and noise problems

[0003] The traditional vibration-absorbing track structure adopts the construction method of binding steel bars on site and pouring concrete. Generally, the daily construction speed is 25m to 50m, and the number of construction personnel is 80 to 100. Narrow and a large number of manual work links lead to low construction accuracy, low work efficiency, and high safety risks, and the cost of design, construction and maintenance also increases

In addition, line diseases in the cast-in-place vibration-damping track section occur from time to time, such as the track bed is easy to crack, etc.

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