| 张振伟,侯万钧,黄云峰,褚作勇.人车混行城市隧道交通噪声对行人影响的实验研究[J].声学技术,2022,41(5):729~733 |
| 人车混行城市隧道交通噪声对行人影响的实验研究 |
| Experimental study of traffic noise impact on pedestrians in pedestrian and vehicle mixed urban tunnel |
| 投稿时间：2022-04-16 修订日期：2022-05-28 |
| DOI：10.16300/j.cnki.1000-3630.2022.05.015 |
| 中文关键词: 城市隧道 交通噪声 声压级 频谱 降噪措施 |
| 英文关键词: urban tunnel traffic noise sound pressure level spectrum noise reduction measures |
| 基金项目:淮南市政府发展研究中心项目(K2110098)。 |
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| 中文摘要: |
| 为研究人车混行城市隧道内机动车噪声对行人的影响，文章在洞山隧道内部、口部、外部等间距布置8个测点，利用RTA840双通道实时分析仪测试了20min内的交通噪声等效声压级、频谱和车辆从行人旁边经过时3s内的交通噪声瞬时声压级、频谱。测得：(1) 隧道内部的交通噪声等效声压级为82dB(A)，比隧道外等效声压级高10dB(A)。(2) 隧道外部、口部、内部的交通噪声频谱曲线特征相同，在20~2 000Hz范围内声压级较高且呈“M”形。(3) 当车辆在隧道内部从行人旁通过时，交通噪声瞬时声压级达到86dB(A)；瞬时噪声频谱相比于背景噪声频谱在20~8 000Hz频段范围内声压级均有明显增大。最后结合测试结果和洞山隧道实际从吸声、隔声、管理三方面总结隧道内声环境改善措施。 |
| 英文摘要: |
| The impact of motor vehicle noise on pedestrians in urban tunnel is studied by arranging eight equal spacing measuring points, at the interior, mouth, and exterior of Dongshan tunnel. The equivalent sound pressure level and spectrum of traffic noise within 20 min and the instantaneous sound pressure level and spectrum of traffic noise within 3 s when vehicles pass by pedestrians are measured by RTA840 dual channel real-time analyzer. The following measurement results are: (1) the equivalent sound pressure level of traffic noise inside the tunnel is 82 dB(A), which is 10 dB(A) higher than that outside the tunnel; (2) The spectrum characteristics of traffic noise outside tunnel and at the interior, mouth and exterior of the tunnel are the same, and the sound pressure level is high and the spectrum distribution curve is in the shape of "M" in the frequency band of 20~2 000 Hz; (3) When vehicles pass by pedestrians in the tunnel, the instantaneous sound pressure level of traffic noise reaches 86 dB(A), and compared with the background noise spectrum, the instantaneous noise spectrum levels are significantly increased in the frequency band of 20~8 000 Hz. Finally, combined with the test results and the actual situation of Dongshan tunnel, the traffic noise improvement measures for the acoustic environment in the tunnel are summarized from three aspects: sound absorption, sound insulation and management. |
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