With the improvement of living standards, people pay more and more attention to their own health and quality of life, housing is due to the survival of health-oriented development. Quiet living environment is the guarantee of people's healthy living and the important consideration index of human habitation comfort, however,Noise Barrier Panels noise pollution is one of the problems that residents complain most about the quality of housing for many years. How to create a green and healthy living space in the increasingly noisy environment has become a great concern for designers.
The method of noise control
Light is a straight line, afraid of light to pull a curtain can be solved. And the sound is all-pervasive, can be drilled from the gap, small hole,Noise Barrier Panels you can bypass the obstacles continue to move forward, you can use objects to reflect over, in short, not to reach your ears will never rest.
Noise in buildings has two sources, air and solid, commonly known as air sound and solid impact sound. The sound of air is the noise of the air, such as the sound of the airplane, the sound of the car, the sound of the room, and the sound of musical instruments. Solid impact sound refers to the sound of running and jumping upstairs, the sliding of furniture, the vibration of washing machine,Noise Barrier Panels the sound of elevator running and so on. Noise control is aimed at these two kinds of noise.
The method of noise control is simple: one is to reduce the noise at the source, the other is to reflect or isolate the noise, the third is to absorb noise using sound absorption material, four is the active noise reduction technology.
III. Noise control measures in all stages of architectural design
Noise control is a systematic project, which needs to take measures from the aspects of planning and design, landscape design, plane façade design of single building, structural structure, material selection and vibration and noise reduction of equipment.
1. Planning Site Selection
Studies in many countries have shown that 70% of urban noise comes from traffic noises. In China, highway traffic noise is the main source of urban environmental noise, and the urban noise distribution map, which was drawn after many cities surveyed, shows that the highest noise bands are distributed in the communication lines. Most cities have not dealt with the noise control of residential buildings along the street,Noise Barrier Panels at least 20% of urban residents are disturbed by traffic noises.
In the urban planning, according to the sound environment of the development of reasonable acoustic zoning, you can control the noise from the macro. The following diagram, it determines the future direction of urban development. As far as possible to avoid residential areas and industrial areas and bustling business mix, and avoid the railway through the urban area, the airport should be far away from the city. such as Tokyo, Japan,Noise Barrier Panels the main factory concentrated in the vicinity of the airport and far away from residential areas, because of the noise in the industrial area itself is higher, the interference from the aircraft is not obvious.
Of course, by various reasons, residential land may also be designated in noisy areas. Only the new community in the land-holding stage to pay attention to the traffic trunk road, the airport near the noise risk, in the design began to establish a sense of noise, the implementation of the principle of noise-proof layout, from the outside to prevent traffic noise intrusion, internal processing of a variety of noise sources to control the noise pollution
2. Landscape Design
Ingenious use of landscape terrain, walls, green planting, can achieve better noise reduction effect.
(1) Using terrain to reduce noise
The earth has a reflective effect on the sound wave, and it can achieve some degree of noise reduction through the landscape terrain fluctuation and controlling the direction of acoustic reflection.
(2) using the wall as sound barrier to reduce noise
Noise barrier is a common method of noise reduction in traffic field. The sound barrier utilizes the reflection principle of sound waves. When the light is obscured by obstacles,Noise Barrier Panels it forms a dark area behind it, or a shaded area. Sound propagation is similar to light, forming a sound "sound shadow area" in the back of an obstacle, in which the sound is significantly reduced and the noise can be reduced to $number decibels in general.
The walls of the community can naturally play the role of sound barriers. Through acoustics and landscape design, in addition to meet the acoustic requirements, but also to achieve better visual effects.
(3) Using greening vegetation to reduce noise
A large number of scholars at home and abroad have carried out the study of using vegetation to reduce noise. It is generally believed that the sound absorption effect of vegetation is comprehensive, when the sound wave is incident to the vegetation bundle,Noise Barrier Panels the sound in the High-frequency range is absorbed by the leaves and trunks; the acoustic energy in the intermediate frequency is attenuated by the reflection and scattering of the plant's branches and leaves;