Specializing in the production of wire mesh fence and sound barriers
A brief introduction to the installation requirements of highway sound barriers
2022-07-25
A brief introduction to highwaysSound barrierInstallation requirements
RoadSound barrierNoise reduction effect
When sound waves encounterSound barrierduring propagation, three phenomena occur: reflection, transmission, and diffraction. Generally,Sound barriercan block the propagation of direct sound, allowing the transmitted sound to be sufficiently attenuated, while the influence of the transmitted sound can be ignored, thereforeSound barrierThe sound insulation effect can generally be expressed by noise reduction, which reflectsSound barrierThe above two sound transmission capabilities. InsertingSound barrierbetween the sound source and the receiving point, andSound barriersetting it to infinite length, sound waves can only diffract from above the sound barrier, then forming a sound shadow zone, similar to how light is blocked by an object to form a shadow. In this sound shadow zone, people can feel a significant reduction in noise, which isSound barrierthe noise reduction effect.
HighwaySound barrierInstallation Requirements
(1) The foundation burial depth and material meet the design requirements.
(2) The specification and material of the metal columns should not be lower than the design requirements.
(3) The welding materials and fasteners used meet the design requirements and the provisions of current standards. During welding, there should be no cracks, unmelting, slag inclusion, and unpenetrated arc pits.
(4) Metal columns, connecting pieces, andSound barrierWhen transported to loading and unloading vehicles, measures should be taken to prevent deformation or damage of the anti-corrosion layer during transportation, and the installation of deformed parts is prohibited.
(6) The fixing bolts are correctly tightened, the number meets the design requirements, and the end is flat without honeycomb or rough surface.
(6) The joint between the screen body and the foundation should be tight and meet the design requirements.
ExpresswaySound barrierHow is the noise reduction performance reflected?
1. Galvanized plate sound absorption
The characteristics of galvanized louver metal plates are: light weight, no pollution, anti-glare, anti-aging, impact resistance, freeze-thaw resistance, stable sound absorption coefficient, moisture-proof, corrosion-resistant, easy to bend, easy to process, easy to transport, easy to disassemble and maintain, reasonable cost performance, and can be sprayed in various colors.
2. Transparent plate sound insulation
Transparent plates look like glass. There are three commonly used materials: laminated glass, PC board, and acrylic board. The light transmittance of these three materials increases in turn, so they are suitable for places that require lighting. Used with metal plates, the effect is even better.
3. Aluminum alloy perforated plate sound absorption
The principle of micro-perforated plates is to drill a certain number of holes in the plate and leave a certain air layer behind the plate, so that the incident sound waves resonate and absorb, thereby achieving sound absorption. Micro-perforated platesSound barrierhave been widely used in expressways, urban overpasses, and other places.
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