Sound barrier used for viaduct

Abstract

The invention discloses a sound screen for a viaduct, comprising a screen support and a cable support disposed on the screen support. The screen support comprises an integrated prefab active powder concrete bottom beam, a back plate and a beam. The bottom beam is disposed at the lower end of the back plate, the beam is disposed at the upper end of the back plate, and the cable support is disposed on the said back plate. A protruding portion is disposed at the lower end of the back plate, and the included angle between the protruding portion and the bottom beam is a right angle. A composite sound absorbing layer is disposed on the surface of the back plate. Comparing with prior art, the invented sound screen comprises a bottom beam, a back plate and a beam which are integrated and prefabricated in factory by using a shaped mould plate. The sound screen is connected with the bridge by connecting the bottom beam of the sound screen with the bridge by bolts, which can be assembled on site simply. The sound screen is produced as an integral body, and steel columns and ALC protective fence plates of traditional sound screen are saved, so that cost and maintenance are reduced.

Description

Technical field: [0001] The invention relates to a sound barrier for isolating noise generated by subways running on elevated bridges. Background technique: [0002] After the subway comes out of the ground, it is generally an elevated line, and the elevated bridge passes through the urban area. Noise becomes one of the pollution caused by the subway to the surrounding environment. In order to solve this contradiction, it is necessary to take noise reduction measures such as sound barriers in the areas on both sides of the subway elevated line to control the sensitive points of noise. [0003] Traditional subway sound barriers are mainly in the form of column inserts, and share H-shaped steel with cable brackets. At the same time, the additional guardrails (usually made of ALC light material) for the external measurement of the sound barrier are also generally fixed on the H-shaped steel. [0004] The main disadvantages of traditional sound barriers are as follows: [000...

AI Technical Summary

Problems solved by technology

[0005] 1. The traditional sound barrier is adopted, and there are many assembled components, such as H-shaped steel columns, guardrail panels, and sound barrier unit panels.

[0006] 2. The durability and self-cleaning ability of the traditional sound barrier materials mainly used at present are not strong. After long-term use, the appearance is easy to get dirty and the service life is not long

[0007] 3. Corrosion of steel, high maintenance cost and poor durability

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