Improvement of sound insulation performance of roadside building facade

路边建筑立面隔音性能的提高

• 批准号: 11450215
• 负责人: TACHIBANA Hideki
• 金额: $ 8.83万
• 依托单位: University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B).
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-11450215/
• 关键词: Roadside building; Sound insulation; Road traffic noise; Scale model experiment; Numerical analysis; Field measurement; Measuring technique; 二重皮膜構造

The convenience of city life is greatly dependent on the road transportation. On the other hand, development of roads and progress of the motorization bring a negative property, that is, they make sound environment of the accommodation area worse and worse. In order to solve the problem, defending performance of the roadside buildings against external noises must be improved in addition to countermeasures for the noise source of automobile, development of the low-noise pavement (drainage asphalt pavement) and improvement on the road structures. In this study, the following experimental investigations were performed for purposes of systematically investigating the techniques by which roadside sound environment is improved and proposing ideal roadside buildings in the future from a viewpoint of acoustical engineering.1. Effect of Absorption Treatment of Balcony Space against Road/Railway Traffic NoiseAs the method of reducing the traffic noise, contrivance of the facade shape and acousti … More c treatment of each facade part can be applicable. However, systematic examinations for these countermeasures have not been carried out. In this study, the effect was examined by numerical calculation, scale model experiment and field measurement. As a result of numerical analysis and model experiment, the following knowledge was obtained : Over 5 dB sound reduction effect is possible against road traffic noise when the balcony eaves ceiling is treated by absorbing materials. The effect is higher as a high floor. In addition, the effect of balcony eaves ceiling sound absorption was examined and confirmed by field measurement at a multiple dwelling house which is located along a railway line.2. Experimental Study on Improvement of Sound Insulation Performance of Double WindowA double window, which is often used for raising the sound insulation performance, has disadvantage in low frequencies caused by the resonance transmission. whereas it has much higher performance in high frequencies than a single window. In order to improve the sound insulation defect of a double window in low frequencies, an idea of applying resonance type sound absorbing structure (Helmholtz resonator), which is effective in the sound absorption at low frequencies, may be effective. The applicability was investigated by an experimental examination. As a result of 1/5 scale model experiment, the transmission loss in frequency range which coincides the resonance transmission of the double window is 7 dB improved and the applicability of resonance type sound absorption structure against the resonance transmission of a double window is found.3. Measuring Method of Sound Insulation Performance of Building FacadeIn actual roadside building, low Signal/Noise ratio caused by background road traffic noise makes the sound insulation performance measurement of the building facade much difficult. Measuring methods by which the high-precise measuring result can be obtained under low S/N ratio environment are indispensable in order to examine the effect of the countermeasure proposed by this study in actual buildings. For a purpose of establish the method applicable to field sound transmission measurement, comparison examinations among the synchronized integration technique, time stretched pulse method and M-sequence modulated correlation technique were carried out by laboratory experiment and field measurement. Less

城市生活的便利性很大程度上依赖于道路交通，但另一方面，道路的发展和机动化的进步也带来了负面的影响，那就是使住宿区的声环境越来越差。针对这一问题，除了针对汽车噪声源采取对策、开发低噪声路面（排水沥青路面）以及对道路结构进行试验研究之外，还必须提高路边建筑物对外部噪声的防护性能。为了目的从声学工程的角度研究改善路边声环境的技术并提出未来理想的路边建筑。1．阳台空间吸收处理对道路/铁路交通噪声的影响作为降低交通噪声的方法，立面形状的设计和各立面部分的声学处理是可行的，但在本研究中尚未对这些对策进行系统的检验，通过数值计算、比例模型来检验其效果。通过数值分析和模型实验，得出以下结论： 阳台屋檐吊顶采用吸声材料处理，对道路交通噪声的降噪效果可达5dB以上。另外，通过对位于铁路沿线的住宅的现场测量，验证了阳台檐口吸音效果。2．双层窗隔音性能的改善实验研究。这通常用于提高隔音性能，由于共振传播而在低频方面存在劣势，而在高频方面却比单窗具有更高的隔音性能，为了改善双窗在低频方面的隔音缺陷，一种想法是：采用对低频吸声有效的共振型吸声结构（亥姆霍兹共振器）可能是有效的。通过1/5比例模型实验的结果，研究了其适用性。与谐振传输一致的频率范围双窗改善了7dB，找到了共振式吸声结构对抗双窗共振传播的适用性。 3．交通噪声给建筑立面隔声性能测量带来了很大的困难，为了检验隔声效果，需要在低信噪比环境下获得高精度的测量结果。为了建立适用于现场声传输测量的方法，通过室内实验和现场对同步积分技术、时间拉伸脉冲法和M序列调制相关技术进行了对比检验。测量.更少

项目成果

于千,廉成坤,坂本慎一,橘秀樹,矢野博夫,大脇雅直: "建物ファサードの遮音に関する検討-バルコニー空間の吸音による効果-"日本音響学会春季研究発表会講演論文集. 805-806 (2001)

Yu Chi、Ren Seikun、Shinichi Sakamoto、Hideki Tachibana、Hiroo Yano、Masanao Owaki：“建筑外墙隔音研究 - 阳台空间吸声效果 -”日本声学学会春季会议论文集 805-。 806（2001））

H.Yano, H.Tachibana: "Laboratory measurement of air-bone sound insulation of building elements by sound intensity"Proceedings of InterNoise 2000. 3737-3750 (2000)

H.Yano、H.Tachibana：“通过声音强度对建筑构件的空气骨隔音进行实验室测量”Proceedings of InterNoise 2000. 3737-3750 (2000)

H.Tachibana, S.Sakamoto, Q.Yu and M.Owaki: "Improvement of sound insulation performance of roadside building facades"Summeries of technical papers of annual meeting, Architectural Institute of Japan. (to be submitted). (2001)

H.Tachibana、S.Sakamoto、Q.Yu、M.Owaki：《路边建筑外墙隔音性能的改善》日本建筑学会年会技术论文摘要。

橘秀樹,坂本慎一,于千,大脇雅直: "沿道建物のファサードの遮音性能向上について"日本建築学会大会講演梗概集. (発表予定). (2001)

Hideki Tachibana、Shinichi Sakamoto、Chien Yu、Masanao Owaki：“提高路边建筑外墙的隔音性能”日本建筑学会会议摘要（待提交）。

H.Tachibana and S.Sakamoto: "Improvement of sound insulation properties of building facades"Proceedings of 17^<th> International Congress on Acoustics. (to be submitted). (2001)

H.Tachibana 和 S.Sakamoto：“建筑外墙隔音性能的改善”第 17 届国际声学大会论文集。