Description

Sound barrier, an acoustic barrier specially designed to stand between a noise source and a sound receiving point. It is usually designed for a specific sound source and a specific protection position.

The sound barrier is mainly used for sound insulation and noise reduction of highways, expressways, elevated composite roads and other noise sources. Divided into pure sound insulation reflective sound barrier, and sound absorption and sound insulation combined compound sound barrier, the latter is a more effective sound insulation method. It refers to the wall structure installed on the side of railway and highway to reduce the impact of traffic noise on nearby residents. Sound walls are also called sound barriers. A facility inserted between the sound source and the receiver, so that the sound wave propagation has a significant additional attenuation, thereby reducing the impact of noise in a certain area where the receiver is located, such a facility is called the sound barrier. It is divided into traffic noise barriers, equipment noise attenuation noise barriers, industrial plant boundaries noise barriers, roads and highways are the most used places of various types of sound barriers.

Barrier structure

The outdoor sound barrier is generally made of brick or concrete structure, and the indoor sound barrier is made of steel plate, wood plate,PMMA/POLYCARBONATE SHEET plastic plate, gypsum board and aluminum foam. The sound barrier is mainly composed of steel structure column and sound absorbing baffle plate. The column is the main stress component of the sound barrier, which is fixed on the embedded steel plate of the road anti-collision wall or the track side by bolts or welding. The sound insulation board is the main sound insulation and sound absorption component, which is fixed in the H-type column slot through the high-strength spring clip to form a sound barrier. The design of the sound barrier has fully considered the wind load of the elevated highway, the urban light rail, the subway, the impact safety of traffic vehicles and the anti-corrosion problems in the open air all weather. It has beautiful appearance, exquisite production, convenient transportation and installation, low cost and long service life, especially suitable for the anti-noise use of elevated high-speed roads and urban light rail and subway, and is the most ideal sound insulation and noise reduction facilities in modern cities.

The height of the sound barrier is between 1m and 5m, covering the effective area with an average noise reduction of 10 ~ 15dB(125Hz ~ 4000Hz, 1/3 octave), up to 20dB. Generally speaking, the higher the sound barrier, or the farther away from the sound barrier, the better the noise reduction effect.

Main classification

Sound barriers can be divided into the following categories according to material classification: metal sound barriers (metal louvers, metal screen holes), concrete sound barriers (lightweight concrete, high-strength concrete), PC sound barriers, FRP sound barriers, etc. The maximum width 2.7 meters wide pc tempered Plexiglass panel has been officially produced in Wuxi, and the sound barrier factory has been successfully installed, greatly improving the visual and noise reduction effect

According to different uses, it can be divided into such categories: railway sound barrier, highway sound barrier, urban landscape sound barrier, residential noise reduction barrier, etc.

The advantages of sound barriers

1. Low cost: not only the production cost of the product is low, but also the load-bearing load of the elevated light rail and elevated road can be greatly reduced due to the light weight of the product, reducing the project cost;

2. Withstand strong wind load: high strength, light weight, can meet the requirements of different climatic conditions in different regions of China for wind load;

3. Excellent acoustic performance: the average sound insulation of magnesite sound barrier is greater than 35dB, and the average sound absorption coefficient is greater than 0.84, meeting the requirements of various fields for sound barriers;

4. Good fire performance: Magnesite gelling material is an inorganic non-combustible material, and composite sound-absorbing glass wool, perlite and other materials also have good fire performance, making the product have excellent fire performance, belonging to the national A-class non-combustible material;

5. Good durability: Magnesite sound barrier water resistance, fire resistance, corrosion resistance, UV resistance, not by rain, snow, wind, sand and other bad weather erosion, long service life;

6. Easy installation: magnesite sound barrier light weight, can be assembled construction, high efficiency, short construction period, can save a lot of labor costs;

7. Beautiful and plastic: according to different needs, it can be combined with metal materials and transparent materials, and can also be sprayed with various colors and patterns to meet the requirements of landscape decoration.

8. Energy saving and environmental protection: the raw materials used for magnesite sound barrier are non-toxic and harmless, and the production process does not need high temperature heating, no toxic gas release, which is an environmentally friendly product encouraged by the state;

9. Wide range of application: according to different needs can be processed and produced magnesite sound insulation board and magnesite sound absorption board, suitable for road, light rail, railway, culvert, tunnel and other traffic fields and various industrial plants, workshops and residential areas.