摘要
选取有代表性的高速公路监测路段,研究声屏障的降噪效果及噪声随距离的衰减情况,对敏感点及有无声屏障的声环境质量进行监测。结果表明:选取的敏感点及对照点处的噪声级均有不同程度的下降,其中昼间降噪量一般在2.2~4.3 dB(A),夜间的降噪量在6.3~6.9 dB(A);有声屏障处的昼间夜间噪声强度与无声屏障处的噪声强度相比显著降低,降幅2.55~9.95 dB(A)。高速公路噪声随距离的增加,噪声级逐渐衰减,距离公路中心线120m处,昼间夜间均可达到2类标准。
The noise reduction effect of sound barrier and the attenuation of noise with distance are studied by selecting a representative expressway monitoring section,and the quality of sound environment of sensitive points and sound and silent barriers is monitored.The results show that:the noise levels at the selected sensitive points and control points have decreased to varying degrees,in which the value of noise reduction is generally 2.2-4.3 dB(A)in the daytime and 6.3-6.9 dB(A)at night;the daytime and nighttime noise intensity at the sound barrier is significantly lower than that at the silent barrier,with a decrease of 2.55-9.95 dB(A).The noise level of expressway decreases gradually with the increase of distance.The daytime and nighttime noise level can reach Class 2 standard at 120m away from the center line of expressway.
作者
王立璇
Wang Lixuan(Hebei Chemical and Pharmaceutical College,Shijiazhuang 050000,China)
出处
《北方交通》
2022年第5期64-67,共4页
Northern Communications
基金
2021年度河北省社会科学发展研究课题(20210201519)。
关键词
高速公路噪声
声屏障
噪声监测
降噪效果
Expressway noise
Sound barrier
Noise monitoring
Noise reduction effect
