A prefabricated slab type damping track structure system and supporting construction method

Abstract

The invention relates to a prefabricated slab-type damping track structure system and a supporting construction method. The track structure system is composed of steel rails, fasteners, prefabricated panels, elastic cushions, sealing sleeves, longitudinal connection devices, filling layers and the like. The elastic cushion and prefabricated panels can be combined into one in the factory. The track plate can be reserved with 1-3 holes through the thickness direction of the track plate according to the engineering needs (for pouring the filling layer and observing the pouring state), reserved holes for installing support legs, holes for installing measurement and positioning marks, and holes for laying and positioning Centering marks, embedded parts for composite connection of elastic cushions, lifting nails for lifting, embedded parts for longitudinal connection of track slabs, embedded parts for installing contact rails, etc. The laying of prefabricated track slabs adopts paving equipment such as pallet trucks, cranes, and fine-tuning trolleys. It has the characteristics of simple construction procedures, fast construction speed, high construction precision, good track smoothness, and low labor intensity. The convenience of replacing track slabs and elastic cushions after operation has been 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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