Sound Barrier Project Ningbo Noise Control Unit Ningbo East China Environmental Protection Professional Noise Prevention and Control Company

"Magnetic Levitation" Sound Barrier Test Section Project
This project
The sound barrier is divided into sections, each section is meters long, has a total of meters and a height of meters. Because
the reflection of rail traffic noise between the sound barriers on both sides of the line is different from that of the road. Because compared with cars running on the road, the train itself is a rigid reflector with strong integrity, a large area and a relatively flat surface. At the same time, the distance between the wheel-rail noise source and the sound barrier, the main body of train running noise, is relatively fixed and very close. Therefore, the reciprocating reflection of noise between the near-end sound barrier and the back surface of the car body has a greater impact on the diffraction sound attenuation of the near-end sound barrier. Therefore, vertical type
+.+laminated glass is used in this section of the project. The screens are fixed on both sides of the track, and their weighted sound insulation amount ≥
sound absorption coefficient
≥
.
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