Combined damping ballast bed suitable for high-performance damping requirements of urban rail transit

Abstract

The invention discloses a combined vibration damping ballast bed meeting requirements of high-performance vibration damping of an urban mass transit. A combined vibration damping ballast bed main body is a packaging structure which is formed by stacking a prefabricated ballast bed plate, a vibration damping pad and a prefabricated base plate from top to bottom, the vibration damping pad, an elastic gumshoe and a water-stop belt are placed between the prefabricated ballast bed plate and the prefabricated base plate; the water-stop belt is paved along edges of the peripheries of the prefabricated ballast bed plate and the prefabricated base plate; after penetrating through a through groove of the vibration damping pad, the elastic gumshoe is connected between a boss structure of the prefabricated ballast bed plate and a groove structure of the prefabricated base plate; and a clamp is connected between outer side walls of the prefabricated ballast bed plate and the prefabricated base plate for fixed packaging. The combined vibration damping ballast bed can be prefabricated in factories, is convenient to assemble and disassemble, efficient in manufacturing and controllable in precision; vibration damping performance is easy to guarantee; maintenance and repair in an operation period and change of components are facilitated; and most of components are simple in structure, high in universality degree and moderate in cost, whole components can be recycled, and therefore, waste and pollution are avoided.

Description

technical field [0001] The invention belongs to the technical field of ballastless track, and in particular relates to a combined damping ballast suitable for high-performance damping requirements of urban rail transit. Background technique [0002] In order to meet the needs of the urbanization process and the co-construction of residents' living environment, the construction of urban rail transit puts forward higher and higher requirements for the protection of sensitive points along the line. Among them, vibration-reducing ballast is one of the important technical measures for the protection of sensitive points. Compared with other main structure vibration reduction measures, it has the technical characteristics of simple structure, easy implementation, and reasonable project investment. Therefore, further improving the structure design of vibration reduction ballast bed is of great significance for the rapid and healthy development of urban rail transit. [0003] At pres...

AI Technical Summary

Problems solved by technology

[0003] At present, the main high-performance anti-vibration ballast technology products in the field of domestic urban rail transit are relatively single, which cannot meet the needs of anti-vibration performance and choose diversified products, which makes the investment of anti-vibration ballast bed projects relatively high.

At the same time, the current high-performance damping ballast bed structure is mainly cast-in-place ballast bed. However, due to factors such as on-site construction, the structural vibration-damping performance of the cast-in-place damping ballast bed cannot meet the design requirements. The ballast bed structure with factory production, reasonable engineering investment and superior vibration damping performance is very necessary

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