Today I will share with you the noise prevention effect of membrane structure buildings. The editor believes that a simple understanding of the anti-noise effect of membrane structures is needed. So stop talking nonsense, and immediately enter the topic.
1. Internal echo:
1. The echo moment is proportional to the internal volume and inversely proportional to the internal and external sound absorption rate.
2. Good voice quality requires a short echo time, and then prevents mutual interference between sound waves. This is generally not difficult for small meeting rooms, but it is very difficult to solve this problem in large closed memory spaces, such as gymnasiums and indoors. Track and field, water sports center, stadium, etc.
3. According to the overall planning, function and economic budget of the building plan, select the best cost-effective membrane planning plan: double membrane plan.
4. PVC outer membrane plus PVC inner membrane, PTFE outer membrane plus PVC inner membrane, PTFE outer membrane plus PTFE inner membrane, the inner lining membrane mainly controls the sound absorption target, and the outer membrane mainly focuses on architectural durability and structure.
5. Double-layer membrane and sound insulation layer plan. Pay attention to the compatibility of sound insulation materials and thermal insulation materials, and the harmony with light transmittance. PTFE, PVC single layer membrane plan.
2. External noise isolation:
1. First consider the orientation and orientation of the membrane structure in order to minimize noise entry.
2. In addition to the location of the building, the planning of sound insulation equipment should also be considered to reduce the common noise transmitted on the ground and isolate the noise source from the structure.
3. Under normal circumstances, every time the distance between the sound source and the building is doubled, the noise will be reduced by 6dB, while the noise of the bush barrier can only be reduced by 0.4dB, so that it can be ignored.
3. The number of layers of the added film, the thickness of the interlayer of the control arrow and the weight on the film when necessary are all available ways to improve the noise reduction effect.
1. It is necessary to carefully consider the connection skills of the membrane structure to ensure its airtightness and reduce the possibility of noise transmitted through the air from entering the gap.
2. It is necessary to ensure that the thermal function of the building should not be affected when adopting these methods.
3. As with most architectural acoustics, it is very important to separate the noise from the supporting equipment and other noise sources from the conclusion.
4. Careful planning of indoor sound-absorbing surfaces is also very important, because sound-absorbing skills help to reduce the influence of indoor background noise.
The article is compiled from Shanghai Shows A Membrane Structure Co., Ltd.
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