Institute of Technology, Shimizu Corporation, 3-4-17 Etchujima, Koto-ku, Tokyo, 135-8530, Japan.
J Acoust Soc Am. 2013 Aug;134(2):EL185-90. doi: 10.1121/1.4812823.
In the present report, the noise-shielding efficiency of balconies with ceiling-mounted reflectors on the façades of high-rise buildings is examined through full-scale field measurements. The reflectors are designed to reflect direct and diffracted waves incident on the balcony ceiling outside the balcony. Field measurements are conducted to investigate the performance of the reflectors on intermediate floors of a high-rise dwelling adjacent to a railway. The reflectors reduce railway noise by approximately 5 dB, in A-weighted sound pressure level, compared to an ordinary balcony. The noise-shielding efficiency of a balcony equipped with reflectors is greater than that of an absorbing balcony.
在本报告中，通过全尺寸现场测量研究了高层建筑外墙上带顶棚反射器的阳台的隔声效率。这些反射器旨在反射入射到阳台顶棚外的阳台的直达波和衍射波。进行现场测量是为了研究紧邻铁路的高层建筑住宅中间层的反射器的性能。与普通阳台相比，反射器使 A 计权声压级的铁路噪声降低了约 5 分贝。装有反射器的阳台的隔声效率大于装有吸声材料的阳台。
