The sound insulation noise barrier structure equipment noise source shielding, Changsha takchitinited Electromechanical Technology Co Ltd is established successfully developed based on the theory of sound insulation noise reduction equipment, mainly used for blocking the direct sound propagation, it is a sound insulation facilities. Sound barrier (patent number: ZL201420625307.6) is mainly used outdoors. With the increasingly serious traffic noise pollution, some countries have adopted various forms of barriers to reduce traffic noise. In building, if the requirement of sound insulation is not high, the barrier can be used to separate the workshop and the office. The installation and movement of the barrier are more convenient and have certain sound insulation effect, so it is widely used. Classification of noise barriers
According to the material, the noise barrier is mainly composed of all metal noise barrier, all glass fiber reinforced plastic noise barrier, PC transparent barrier, high strength cement noise barrier, cement wood chip noise barrier, etc.;
According to the sound barrier application environment, the noise barrier is divided into traffic noise barrier, equipment noise attenuation noise barrier, industrial plant noise barrier. According to different uses can be divided into such categories: railway noise barrier, road noise barrier, urban landscape noise barrier, noise reduction noise barrier in residential areas.
Types of noise barriers
First, the noise barrier
The noise barrier is composed of a front plate, a rear plate and a side plate, forming a closed box structure, forming a modular unit. The front plate is a galvanized steel sheet with a perforation rate of 25%, and the rear plate and the side plate are non perforated galvanized steel sheets (from the aesthetic point of view, also available in color steel plates). The damp proof centrifugal sound absorption cotton board is filled between the two boards, and the sound absorption material is covered with polyvinyl fluoride film. The column is 12# I-beam and the column spacing is 2m. The column is inserted into the reinforced concrete foundation. It is very convenient to insert standard plate into I-beam, fasten with fasteners, install, repair and replace.
Two, ordinary transparent noise barrier
The common transparent noise barrier adopts a transparent polycarbonate board (also known as PC board), because it is transparent, and the sound barrier has a better sense of landscape, and it is easy to dissolve into the surrounding environment. Color optional.
Three, microporous board transparent noise barrier
Microporous transparent barrier has 2 layers. It uses the principle of microporous sound absorption, and wears many small holes with 0.8mm diameter on the 1 layer polycarbonate board, the perforation rate is 1%. The other polycarbonate plate does not perforate, and the spacing between the two laminates is 100mm. It is equivalent to a single layer microporous sound absorption structure, which solves the contradiction between sound absorption and transparency. Because of the effect of sound waves, the micropores are not clogged with dust.
Four, composite noise barrier
Composite sound barrier has the advantages of transparent and opaque sound barrier. It is half of the noise barrier, the other half is a transparent noise barrier, from one to two composite, the above 4 kinds of noise barrier height can be freely assembled according to the design requirements, can also be customized according to customer requirements road screen. Noise barrier is mainly composed of steel structure column and suction Shengbing insulation board is composed of two parts, the column is the main stress components of the noise barrier, it is welded and fixed on the road or rail crash wall edge embedded steel plate through bolts; sound absorption board is the main component of sound insulation and absorption, it will be fixed in the H column of groove the high strength spring clip, forming a sound barrier. In the outdoors, noise barriers are usually made of bricks, soil, concrete, steel or plastic panels. Some street buildings or walls also play a barrier to the houses behind it. In the interior, the sound barrier can be made of steel plates, boards, glass or plastic panels, and its surface can also be covered with sound absorbing layer. If the economic conditions permit, the sound absorption surface can receive double effects of sound absorption and sound insulation. Outdoor noise barriers come to the side of the sound source, and sometimes add sound-absorbing materials. The main principle of noise barrier material selection is that the noise reduction effect is good, the structure is safe and reliable, the material price economy, the installation cost is low, durable, long service life, landscape coordination, beautiful appearance and so on. Details are as follows:
(1) large amount of sound insulation: the average sound insulation should be no less than 35dB;
(2) the sound absorption coefficient is high: the average sound absorption coefficient should be no less than 0.84;
(3) durability: the product should have water resistance, heat resistance, UV resistance, and will not reduce the performance or quality abnormality due to the change of rainwater temperature. Products using aluminum alloy plate, galvanized coil, glass wool, H steel column surface zinc plating, external anti-corrosion for more than 15 years.
(4) beautiful: you can choose a variety of colors and shapes for the combination, and the surrounding environment coordination, forming a beautiful landscape.
(5) economy: assembly type construction, improve work efficiency, shorten construction time, can save construction cost and labor cost.
(6) convenient: parallel installation with other products, easy maintenance, easy to update.
(7) lightweight: sound-absorbing panel products have the characteristics of light weight, can reduce the load of elevated light rail and elevated road, and can reduce the structural cost.
(8) fire prevention: using superfine glass cotton, because of its high melting point, non flammable, fully meet the requirements of environmental protection and fire protection standards.
(9) high strength: combined with different climatic conditions in different regions of our country, the wind load is fully tested in structural design. Increase the strength by pressing the groove in the production line.
(10) waterproof and dustproof: the waterproof and dustproof are fully considered in the design of materials, and the sound absorption performance is not affected in the dust or rain environment. Dust drainage measures have been set up in the structure, so as to avoid the water accumulation in the components. The sound absorption performance of micro perforated resonant cavity in rain environment is not affected, especially for medium and low frequency noise reduction.
(11) durability: product design has fully taken into account the wind load on the road, the collision safety of traffic vehicles and the outdoor air preservation. Products using aluminum alloy plate, galvanized coil, glass wool, H steel column surface zinc plating treatment. In the warranty period, no corrosion, constant type, sound absorption, sound insulation effect is not reduced. At present, the noise barrier is mainly used in the highway, elevated composite roads, urban light rail, subway and other transportation facilities in the municipal noise reduction, control of traffic noise on the impact of nearby urban areas, but also for the factory and other noise sources noise reduction.
Contact: He Jie senior expert 1380731423