Integrated shell sound absorption unit for rail transit sound barrier

Abstract

The invention relates to an integrated shell sound absorption unit for a rail transit sound barrier. The unit comprises an integrated cylindrical shell, a sound absorption material and an end cover, the sound absorption material is arranged in an internal cavity formed by the integrated cylindrical shell, and the end cover is arranged on an end surface of the integrated cylindrical shell; and theintegrated cylindrical shell and / or the end cover are / is made of a fiber reinforced composite material. The unit is good in sound absorption and insulation performance, high in strength, simple in structure and the like by designing the structure. Because the selected fiber reinforced composite material can be pressed by a mold, the produced sound absorption unit is attractive in appearance, convenient to manufacture, high in production efficiency, suitable for batch production and particularly light, the sound absorption unit has a characteristic of light dead weight, a bearing load of an elevated light rail and an elevated road can be reduced, and structural cost can be decreased; and the fiber reinforced composite material has strong wind load resistance and is not easy to corrode.

Description

Technical field [0001] The invention relates to the field of sound barriers, in particular to an integrated shell sound absorption unit for rail transit sound barriers. Background technique [0002] With the development of rail transit and the increase in the speed of railway passenger trains, the noise generated by transportation has an increasing impact on residents along the line. The installation of sound barriers has become an effective measure to control noise pollution. At present, the commonly used sound barriers for rail transit include metal sound barriers and concrete sound barriers. The concrete sound barrier is manufactured by pouring reinforced concrete into a hollow body and filling the hollow body with sound-absorbing materials. The disadvantage is that the production is cumbersome and heavy. Therefore, the application of concrete sound barriers in high-speed railways and urban rail transit is limited, and there are various problems such as common cracking of con...

AI Technical Summary

Problems solved by technology

Concrete sound barriers are manufactured by pouring reinforced concrete into a hollow body and filling the hollow body with sound-absorbing materials. The disadvantages are cumbersome production and heavy weight.

Therefore, the application of concrete sound barriers in high-speed railways and urban rail transit is limited, and there are various problems such as cracking and poor landscape effects that are common to concrete materials.

The metal sound barrier is a fastening structure of unit metal parts or riveting processing of metal profiles. Metal sheet metal processing has problems such as long process flow, cumbersome procedures, low production efficiency, poor reliability of riveted joints, and easy falling off of joints.

At the same time, the anti-corrosion spraying and coloring process of the appearance has certain environmental risks, and there will also be fading problems that will affect the landscape effect

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