What is a sound barrier? In general, what are the regulations on sound barriers in my country's construction industry? What are the basic regulations? The following is the content related to the professional construction terminology of sound barrier compiled by the editor of Zhongda Consulting. The basic situation is as follows:
What is a sound barrier?
Sound barriers are mainly used for sound insulation and noise reduction on roads, expressways, elevated composite roads and other noise sources. It is divided into reflective sound barriers that are pure sound insulation, and composite sound barriers that combine sound absorption and sound insulation. The latter is a more effective sound insulation method. It refers to wall structures installed beside railways and highways to reduce the impact of traffic noise on nearby residents.
Basic structure of sound barrier:
Outdoor sound barriers generally use brick or concrete structures, and indoor sound barriers use steel plates, wooden boards, PMMA/POLYCARBONATE SHEET plastic sheets, gypsum boards and Foam aluminum and other structures. The sound barrier is mainly composed of steel structure columns and sound-absorbing and insulation panels. The columns are the main stress-bearing components of the sound barrier. They are fixed to the road anti-collision wall or the embedded steel plate beside the track through bolts or welding; the sound-absorbing and insulating panels The board is the main sound insulation and sound-absorbing component. It is fixed in the H-shaped column groove through high-strength spring clips to form a sound barrier. The design of the sound barrier has fully considered the wind load of elevated highways, urban light rails, and subways, the impact safety of traffic vehicles, and all-weather open-air anti-corrosion issues. It has beautiful appearance, exquisite production, convenient transportation and installation, low cost and long service life. It is especially suitable for noise prevention on elevated highways, urban light rails and subways. It is the most ideal sound insulation and noise reduction facility in modern cities.
The height of the sound barrier is between 1m and 5m, and the average noise reduction in the effective area covered is 10~15dB(A) (125Hz~40000Hz, 1/3 octave), and the maximum is 20dB(A). Generally speaking, the higher the sound barrier, or the further away from the sound barrier, the better the noise reduction effect.
Basic advantages of sound barriers:
Advantages:
1. Low cost: Not only is the production cost low, but the light weight of the product can significantly reduce the cost of elevated light rail, The load-bearing load of the elevated road reduces the project cost;
2. Withstand wind load: high strength and light weight, which can meet the wind load requirements of different climate conditions in various regions of my country;
3. Superior 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 for sound barriers in various fields;
4. Good fire resistance: magnesite gelling The material is an inorganic non-combustible material. Composite sound-absorbing glass wool, perlite and other materials also have good fire resistance, making the product excellent in fire resistance. It is a national Class A non-combustible material;
5. Durability in use Good: Magnesite sound barrier is water-resistant, fire-resistant, corrosion-resistant, UV-resistant, not corroded by rain, snow, wind, sand and other harsh weather, and has a long service life;
6. Easy installation: Magnesite sound barrier The barrier is light in weight and can be constructed in an assembled manner, with high efficiency and short construction period, which can save a lot of labor costs;
7. Beautiful and plastic: According to different needs, it can be combined with metal materials and light-transmitting materials in a structural form. It can also be sprayed with various colors and patterns to meet landscape decoration requirements.
8. Energy saving and environmental protection: The raw materials used in magnesite sound barriers are non-toxic and harmless, and the production process does not require high-temperature heating and no toxic gases are released. It is an environmentally friendly product encouraged by the country;
9. Broad scope of application: Magnesite sound insulation panels and magnesite sound-absorbing panels can be produced according to different needs. They are suitable for highways, light rails, railways, culverts, tunnels and other transportation fields, as well as various industrial plants, workshops and residential areas.
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