高速公路运营期声屏障降噪效果分析及措施建议OA

In order to further implement the requirements of acoustic barrier tracking monitoring during the operation period of expressways and explore the noise reduction effect and influencing factors of the built acoustic barrier,this paper selected three representative acoustic barrier monitoring areas of expressways,selected similar acoustic barrier materials and heights,and monitored the sound environment quality of sensitive points and the noise reduction effect of the acoustic barrier.The results show that:1)The noise reduction effect of the noise barrier in the daytime and night of the sensitive points of the three expressways during the operation period is obvious,which can effectively alleviate the noise impact on residents along the expressways during the operation period.2)In the monitoring area,the distance between the monitoring point and the center line increases,the noise monitoring value shows A trend of attenuation,and the noise reduction value of the sound barrier is between 1.3 and 7.8 dB(A),with an average noise reduction of 4.6 dB(A).3)It is suggested to strengthen the rationalization and scientific design of sound barrier,regular maintenance of sound barrier,and regular monitoring of noise reduction effect of sound barrier,so as to fully guarantee the noise reduction effect of sound barrier during the operation period of expressways,and provide a scientific basis for the control and management of traffic noise and sound barrier during the operation period of expressways.