Track acoustic board structure

Abstract

A track acoustic board structure comprises a central block board body located between the tracks on two sides and lateral block board bodies disposed on two sides of the tracks. The central block board body and the lateral block board bodies made of porous inorganic materials are of honeycomb structures. Sleeper recesses matched with a sleeper is formed at the left and the right end of the central block board body. A longitudinal draining groove is formed in the middle of the lower surface of the central block board body, bearing table recesses are formed on two sides of the middle of the lower surface of the central block board body, and a transverse connecting rod groove is further formed in the lower surface of the central block board body. A plurality of wedges with the tips being cut off are transversely disposed on the upper surfaces of the central block board body and the lateral block board bodies and disposed at intervals. The acoustic board structure can be paved on the surface of a track bed conveniently and quickly, noise reduction is achieved by utilizing the porous inorganic materials to absorb sound wave energy, influence of wheel-track noise to passengers can be reduced effectively, the wheel-track noise is absorbed from the nearest position to the noise source, noise dispersion is avoided, and the noise is reduced effectively.

Description

technical field [0001] The invention relates to the technical field of rail traffic vibration reduction and noise reduction, in particular to a rail sound-absorbing panel structure laid on the surface of a rail bed to reduce driving noise. Background technique [0002] With the expansion of human life, in modern cities all over the world, urban traffic rails inevitably pass under densely populated areas and important buildings. The vibration and noise generated by trains seriously affect people's normal work and life. Therefore, trying to reduce the vibration and noise of the urban track, and to coordinate well with the nature and the living environment has become a problem that people generally pay attention to. Through the test, it is found that the wheel-rail noise is the main sound source of the subway noise, and the rail vibration is a main aspect of the wheel-rail noise. The existing track sound insulation measures are mainly to build sound frequency barriers on both ...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: the noise problem generated when trains are running in urban rail transit, so as to provide a track sound-absorbing panel structure laid on the surface of the track bed for reducing the noise of track running, which is not limited by time and construction procedures , it can be used on new lines, and can also be used in the reconstruction of existing lines

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