城市道路交通噪声频谱及其对隔声评价中频谱修正量的影响

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振动与冲击 ›› 2024, Vol. 43 ›› Issue (19) : 287-297.

论文

城市道路交通噪声频谱及其对隔声评价中频谱修正量的影响

蔡阳生1, 2 陈智慧2 AKRAM A. N. ALABSI1 袁旻忞3, 4

作者信息 +

Urban road traffic noise spectra and their effects on spectral correctionin sound insulation evaluation

CAI Yangsheng1,2, CHEN Zhihui2, AKRAM A N A1, YUAN Minmin3,4

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摘要

现行隔声评价标准中交通噪声频谱修正量参考的是上世纪八十年代北欧测量得到的交通噪声数据。为了研究Ctr修正量是否适用于评价建筑外窗对新时代城市道路交通噪声的隔声性能，本文对多种城市交通道路进行噪声监测，根据测量结果提出一组新的交通噪声频谱修正曲线CA，计算11种常见外窗构造在不同频率范围内的计权隔声量，并对比分析不同频谱修正量声压级频谱的差异性。结果表明：不同城市道路交通噪声频谱都具有低频声压级高、中频平稳、高频下降的相似特点；当今的城市道路交通噪声低频能量远低于Ctr所参考的频谱，其能量频谱分布更接近于C100-3150；对比分析11组外窗的交通噪声频谱修正量CA与现行标准的频谱修正量的差异，CA均落于C和Ctr参考频谱之间的范围内; CA与C、Ctr参考频谱的相关系数R2的值均>0.9且高于C与Ctr的相关性，因此CA对城市道路交通噪声频谱修正具有更好的适用性与代表性，研究结果可为临街住宅的隔声降噪工程提供数据参考。

Abstract

The current sound insulation evaluation standard refers to the traffic noise data measured in northern Europe in the 1980s as the basis for the spectrum correction for traffic noise. For the purpose of exploring whether Ctr correction is still appropriate in evaluating current urban road traffic noise and more precisely evaluating the sound insulation performance of building components that are affected by traffic noise. A variety of urban traffic road noise is monitored in this paper, a new set of traffic noise spectrum correction curves CA is proposed in accordance with the measurements, weighted sound insulation is computed for 11 common exterior window structures at different frequency frequencies, and differences in sound pressure level spectrums with various spectrum corrections are analyzed and compared. Results of the study indicate that road traffic noise spectrums in different cities possess similar characteristics such as high low-frequency sound pressure levels, stable medium frequency sounds, and low high-frequency sounds. In today's urban environment, the low-frequency energy of road traffic noise is much lower than the frequency spectrum referenced by Ctr, and its energy spectrum distribution is closer to C100-3150. After comparing and analyzing the spectrum correction of traffic noise in 11 groups of external windows with the current standard, CA falls within the range between C and Ctr reference spectra. Considering that the correlation coefficient between CA and the C and Ctr reference spectra is greater than 0.9 and higher than the correlation coefficient R2 between C and Ctr, CA has a greater potential for application and representativeness for analyzing the urban traffic noise spectrum. Consequently, the research results can provide data references for residential sound insulation and noise reduction projects affected by urban traffic noise.

关键词

城市道路交通噪声, 隔声 / 频谱修正量, 外窗

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蔡阳生1, 2 陈智慧2 AKRAM A. N. ALABSI1 袁旻忞3, 4. 城市道路交通噪声频谱及其对隔声评价中频谱修正量的影响[J]. 振动与冲击, 2024, 43(19): 287-297

CAI Yangsheng1, 2, CHEN Zhihui2, AKRAM A N A1, YUAN Minmin3, 4. Urban road traffic noise spectra and their effects on spectral correctionin sound insulation evaluation[J]. Journal of Vibration and Shock, 2024, 43(19): 287-297

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