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

城市生活的便利在很大程度上依赖于道路交通。另一方面，道路的发展和机动化的进步也带来了负面影响，即它们使居住区的良好环境越来越差。要解决这一问题，除了对汽车噪声源采取对策、发展低噪声路面（排水性沥青路面）和改善道路结构外，还必须提高道路建筑物对外界噪声的防护性能。本研究从声学工程的角度，系统地研究改善道路声环境的技术，并提出未来理想的道路建筑物，进行了以下实验研究。阳台空间对公路/铁路交通噪声的吸收处理效果作为降低交通噪声的方法，设计立面形状和声学设计， ...更多信息 c处理各立面部分均可适用。然而，对这些反措施的系统研究尚未进行。本文通过数值计算、缩尺模型试验和现场实测等方法，对该措施的效果进行了研究。通过数值分析和模型试验，得出了如下认识：阳台檐顶经吸声材料处理后，对道路交通噪声的降噪效果可达5dB以上。楼层越高，效果越好。另外，通过对一个位于沿着的多层住宅的现场测试，验证了阳台檐板的吸声效果.提高双层窗隔声性能的实验研究双层窗是提高隔声性能的常用方法，但由于共振传递，在低频处存在缺陷。而它在高频中具有比单个窗口高得多的性能。为了改善双窗在低频下的隔音缺陷，应用在低频下的吸声中有效的共振型吸声结构（亥姆霍兹共振器）的想法可能是有效的。通过实验检验，研究了该方法的适用性。通过1/5缩尺模型试验，在与双窗共振传递相吻合的频率范围内，吸声结构的传递损失比传统吸声结构提高了7 dB，验证了共振型吸声结构对双窗共振传递的适用性.建筑立面隔声性能测试方法在实际的路边建筑中，由于背景道路交通噪声造成的低信噪比，给建筑立面隔声性能测试带来了很大的困难。为了在实际建筑物中检验本研究所提出的对策的效果，在低信噪比环境下获得高精度测量结果的测量方法是必不可少的。为了建立适用于现场声透射测量的方法，通过室内实验和现场测量对同步积分法、时间展宽脉冲法和M序列调制相关法进行了对比研究。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.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。

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 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。

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）。