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1.Beautifull and economy
2.Convenient and fire prevention
3.Age limit 15 years
4.Height:1.0-5.0mm
High-speed rail sound barrier:de
Height: 1.0-5.0m
Noise barriers of material selection technology index
Noise barriers material chooses the general rule is noise reduction effect the performance good, safe and reliable, material price structure, installation, lower cost, and economic durable, long service life, landscape coordination, beautiful and easy, and so on.
Details are as follows:
(1) the sound insulation quantity: average sound insulation amount should be not less than 35 dB;
(2) the absorption coefficient tall: average absorption coefficient should be not less than 0.84;
(3) bears the weathering durability: product should have water resistance, heat resistance, anti ultraviolet ray and not because of the rain the temperature change decrease performance or the quality abnormal. Products using aluminum alloy plate, galvanization coil plate, glass cotton, H steel pillar surface corrosion in the galvanized Daniel of 15 years.
(4) beautiful: can choose a variety of colour and modelling for combination, and the surrounding environment harmonious, form beautiful scenery line.
(5) economy: fabricated construction, improve work efficiency, and shorten the construction time, can save construction cost and Labour.
(6) convenient: and other products parallel installation and easy maintenance, update the convenient. (7) light: sound-absorbing board series products have the characteristics of light weight, can reduce the elevated light rail, road bearing load, can reduce the cost structure.
(8) fire prevention: use superfine glass cotton, due to its high melting point, does not burn, fully meet the requirements of the code for fire protection and environmental protection.
(9) high strength: according to our country's regions different climate condition, the structure design of virtual wind load test when fully. Through the production line pressing grooves increase the intensity.
(10) waterproof, dustproof: material when the design mature waterproof, dustproof, dust or in the rain environment the influence of sound absorption performance, structure has set in discharging dust drainage measures, avoid component internal water. The perforation resonance cavity absorption in the sound absorption performance of the rain environment influence, in view of the low frequency noise reduction in particularly evident.
(11) durable: product design has fully considered the wind load, the road traffic safety and the impact of the gas false open-air corrosion. Products using aluminum alloy plate, galvanization coil plate, glass cotton, H steel pillar surface galvanized processing. In the warranty period anti-corrosion, distort, sound absorption, sound insulation effect not decrease.
Noise barriers that is sound sources and between the receiver to insert a facilities, make the sonic has a significant additional attenuation, thus weakening in certain areas of the recipient of the noise influence.
Product features: noise barriers three meters or so ordinary high, also have up to nine meters of above; Have installed in elevated light rail transit, and also have installed in the railway, highway road shoulder; Have the light rail barrier fully enclosed, also have span nearly 20 meters of elevated road closed, etc.; Common metal structure, also have the brick structure; Each of the noise barrier highly different, installation in different places, its structure, basic Settings or there is a big difference, especially in steel structure and basic design part.
Product categories:
The traffic noise barriers, equipment noise attenuation noise barriers, industrial factory bound noise barriers. (size, specifications according to customer demand customization)
Properties:
The noise reduction of noise barriers and the frequency of the noise, the height of the sound barrier and the distance between the method-the peak-trough and other factors, such as the.
Noise barriers reducing noise effect and the noise frequency components of a relationship, to more than 2000 Hz high frequency sound than 800 Hz or so a 1000 medium frequency noise reduction is better sound effect, but for 25 Hz or so of low-frequency sounds. , the sound waves is long and very easy to wavelength from above the barrier diffraction in the past, so the effect is poor.
Usually, the noise barriers to high frequency sound can reduce l0, 15 dB. The height of the noise barrier, but according to sound sources and the distance between the method-the peak-trough design, the height of the barrier doubled, the noise is reduced capacity can be increased 6 dB, in order to make the noise reduction barriers effect is good, should try to make barrier near the source or method-the peak-trough.
Application: suitable for high speed railway, highway, viaduct, rail transportation, power stations, hospitals, schools, industrial enterprise construction site and so on many kinds of acoustic environmental noise control of noise reduction product.
