Highway sound barrier/Railway sound barrier - jn101

sound barrier

The definition of the sound barrier

In the communication process, the sound waves encounter the sound barrier, occurs reflection, transmission and diffraction of three phenomena. Usually we think that the barrier can
Sound barrier sound barrier sound barrier
The source of the sound barrier static noise barriers suction noise barriers
To prevent the spread of the direct sound, and make the system exit sufficient sound attenuation, while the transmittance of sound effects can be negligible. Therefore, the acoustic effects of the sound barrier is generally the amount of noise reduction can be used, it reflects the ability of the two shielded, acoustically transparent sound barrier. Insert a sound barrier between the sound source and receiver points, set barrier unlimited long, acoustic diffraction in the past only from above the barrier, and the subsequent formation of a sound shadow zone, as light objects blocking the formation of a shadow. Acoustic shadow in this area, people can feel the noise significantly weakened, and this is the noise reduction effect of the sound barrier.

Sound barrier structure
Outdoor sound barrier generally use brick or concrete structures, indoor sound barrier reference steel, wood,
The PMMA / Polycarbonate SHEET plastic pull, gypsum board and aluminum foam structure. Sound barrier is mainly composed of two parts of the steel column and suction sound insulation panel, the column is the main force component of the sound barrier, it is fixed by bolts or welding on a road barrier wall or the edge of the track embedded steel; suction sound insulation the board is the main acoustic absorption components by high-strength spring clip to secure it to the H-column tank to form a sound barrier. Sound barrier design has to consider more fully the elevated highway, urban light rail, subway wind load, transport vehicles, crash safety and a 24-hour open-air corrosion problems. It nice shape, producing exquisite, convenient transportation, installation, low cost, long life, especially for the elevated highway and city rail, subway anti-noise, is a modern city with ideal acoustic noise reduction facilities.

The application of sound barrier

The sound barrier is mainly used for rail and road along,
Sound barrier for highway, elevated composite road, urban light rail, subway and other transportation facilities in the municipal acoustic noise, of controlled traffic noise to nearby urban areas, can also be used in factories and other noise sources of sound insulation drop noise.