Noise barrier can block the spread of direct sound!
Published:
2021-07-20
The function of noise barrier is to block the propagation of direct sound, isolate the propagating sound and attenuate the diffracted sound sufficiently When sound waves hit the noise barrier wall, diffraction will occur at the edge of the noise barrier to form a "sound shadow area" behind the noise barrier The expected noise reduction effect of the noise barrier is within the "sound shadow area" Compared with the light and shadow region, the boundary of this "sound and shadow region" is not obvious because the wave length of sound wave is longer than the wavelength of light wave The area where sound waves from the sound source can directly reach after passing through the edge of the barrier is called the "bright area" There is also a short "transition zone" from the bright zone to the sound and shadow zone
The function of noise barrier is to block the propagation of direct sound, isolate the propagating sound and attenuate the diffracted sound sufficiently When sound waves hit the noise barrier wall, diffraction will occur at the edge of the noise barrier to form a "sound shadow area" behind the noise barrier The expected noise reduction effect of the noise barrier is within the "sound shadow area" Compared with the light and shadow region, the boundary of this "sound and shadow region" is not obvious because the wave length of sound wave is longer than the wavelength of light wave The area where sound waves from the sound source can directly reach after passing through the edge of the barrier is called the "bright area" There is also a short "transition zone" from the bright zone to the sound and shadow zone The noise level in the "Shadow Area" is lower than that in the absence of noise barriers This is the basic principle of noise barrier to reduce noise
The existence of noise barrier as a building form will inevitably have an impact on the surrounding environment A well-designed noise barrier should not only have obvious noise reduction effect, but also be integrated with the surrounding environment Not only will it not destroy the original landscape, but it should also add new highlights to the environment The design principles are as follows:
Three-dimensional greening: three-dimensional greening with sound insulation barrier
Widen the field of vision: After installing noise barriers on both sides of the road, the field of vision on the road will be narrowed, especially in some scenic spots, which will affect the rider's appreciation of nature In order to solve this problem, transparent board can be used as the material of sound insulation board
key word:
Noise barrier
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2022-12-13
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