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Investigation of neiborhood low-frequency noise and vibration and research projet for improvement me

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Because the building desity is getting higher, the activities in the neighborhood causes low frequency noise and vibration and affects daily life greatly. Therefore, if the mechanism of low noise and vibration and their correlation with the perception of the general public is understood, then, it will help the establishment of the related regulation on vibration and improve the quality of living of the general public. The current low frequency noise regulations only regulate low frequency air-borne noise, the low frequency noise generated by structure-borne mechanism is not included. First, the literature on the low frequency and vibration measurement methods and regulations are reviewed worldwide. The vibration laws in foreign countries targets construction activities and traffic systems, and mostly uses ISO2631-2 as their guideline for vibration measurement, Therefore, this ISO standard can also be used as a guideline as our measurement standard for vibration. And in this project, as the complaint cases of low frequency noise gathered, it is found that it is predominately caused by vibration. And together with the jury tests in the laboratory, we found that 52dB is the threshold of feeling of both noise and vibration, and this is inline with the the complaint cases that in most cases vibration exceeds 52dB. Therefore, in future project, more complaint cases will be collected and more jury test will be conducted to help setting up the vibration limits and its regulation, and hopefully to improve the quality of our daily life.
Keyword
low frequency vibration,low frequency noise,structure borne noise
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