What are the acoustic barrier categories?
With the rapid development of China's traffic network, sound barrier as a solution to the current traffic noise problem, has been more and more applications. However, from the current domestic built sound barrier effect, some are not very good, to the country and the people caused unnecessary waste. The main reason for this is that most of the sound barrier design is not scientific basis, blindness is relatively large. Where to set the sound barrier, and how to determine the length of the sound barrier (L), sound barrier height (H) and other parameters are determined by the feeling. Based on years of experience in sound barrier research and design practice, the author attempts to give the practical method and empirical formula of the above parameters in the design of sound barrier, which is designed and used by designers in the future sound barrier design.
4, the sound barrier to determine the length
In order to avoid the end effect of sound barrier noise reduction effect, the design should be on the length of the sound barrier has a more reasonable selection. Now a large number of domestic sound barrier there are problems with the terminal effect. If the protection of 100 meters interval, the sound barrier to build 100 meters long, the terminal effect is serious, greatly reducing the sound barrier sound attenuation effect. From the effect point of view, the sound barrier built longer, the end effect will be smaller, the better the sound barrier effect. However, the sound barrier built too long will cause unnecessary waste. How does the length of the sound barrier be built to ensure the effect and save money? The author based on years of design research and practice experience, put forward "15 degrees angle determination method."