综合降噪技术在新泰至宁阳高速公路中的应用研究

采用低噪音路面和新型高效声屏障综合降噪技术处置交通噪声,并进行现场测试,测试数据表明,采用OGFC-13低噪音路面结构,在噪声200~1250 Hz频段,路面的平均吸声系数在0.25~0.59,吸声性能较好,可有效降低车内交通噪声约3.0 dB;在对试验段综合降噪效果的测试后发现,采用本文采用的综合降噪技术处置后,项目试验路段在距离声屏障屏体30 m处降噪效果为9.9 dB,相较普通路段降噪效果提升约4.3 dB,且监测数据表明,随着距离的增加,采用综合降噪技术处置的路段降噪效果表现的更加高效。

Application study of Comprehensive Noise Reduction Technology in Xintai Ningyang Expressway

The comprehensive noise reduction technology of low-noise pavement and new high-efficiency noise barrier is adopted to deal with traffic noise,the field test results are good.The test data show that,using OGFC-13 low noise pavement structure,in the noise band of 200~1250hz,the average sound absorption coefficient of the road surface is 0.25~0.59,and the sound absorption performance is good,which can effectively reduce the traffic noise about 3.0 dB;after testing the comprehensive noise reduction effect of the test section,it is found that after using the comprehensive noise reduction technology adopted in this paper,the noise reduction effect of the test section is 9.9dB at 30m away from the sound barrier screen,compared with the ordinary road section,the noise reduction effect is improved by about 4.3dB,and the monitoring data show that with the increase of distance,the noise reduction effect of the road section treated by the comprehensive noise reduction technology is more efficient.