Noise pollution is one of the public nuisances of modern society. It not only endangers people's physical health, but also endangers people's mental health.
　　 The current status of road traffic noise pollution:
With the widening and reconstruction of urban roads, the Inner Ring Expressway is integrated into urban expressway management. The installation of highway sound barriers can effectively reduce noise. The distance between roads and houses on both sides of the line is getting closer and closer, the area affected by noise increases, and the noise disturbance level increases. The construction of the main city viaduct and overpass has also caused vehicle noise pollution to extend to high-rise buildings. Residents of viaducts, overpasses, and inner ring highways have to endure the impact of road traffic noise on life and health. Noise pollution has made residents along the roads miserable.
The following are suggestions for rationalizing planning to control noise pollution:
In terms of isolation and noise reduction, we should learn from foreign experience and install road sound barriers reasonably on noise-sensitive road sections of inner ring highways, elevated roads and overpasses, rationally plan and install sound barriers, and actively adopt scientific measures to prevent noise and noise. Greatly reduce road traffic noise pollution and enhance the city's humanistic image.
1. For the completed viaducts, light rails, overpasses, inner ring highways and urban traffic trunks, close to the noise-sensitive buildings, especially the residential areas, the environmental protection department will conduct noise monitoring in a unified manner, and the municipal management department will gradually install sounds on the over-standard sections. Barriers, reducing the impact of noise on residents along the line.
2. It is recommended that the district government uniformly issue documents to conduct environmental assessments when building new expressways, light rails, overpasses and viaducts in residential areas, and incorporate sound barriers into the planning to control the impact of road traffic noise on the living environment to a low level. The construction unit that builds noise-sensitive buildings on both sides of the main line of transportation has the responsibility of installing sound barriers to ensure that the acoustic environment quality is up to standard.
Our common road sound barriers include metal sound barriers and FRP sound barriers. These two types of sound barriers are often oriented toward the side of the sound source (punched galvanized sheet or microporous aluminum alloy and glass fiber reinforced plastic), back sheet, Lined with centrifugal glass wool, sound-absorbing panel hole type: flat perforation, louver perforation, the principle of use: sound waves through the panel punching into the inside of the screen body, sound waves in the screen inside the sound-absorbing cotton tiny gaps through the friction to generate heat, and constantly The sound energy is consumed to achieve attenuated sound noise reduction effect.

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