高速公路声敏感点声场分布模拟与仿真  

Modeling and Simulation of Acoustic Field Distribution in Highway Sound Sensitive Point

作　　者：叶颖[1] 王志瑞[2] 翟云波[2] 马迎春[2] 陈琳[1] 

机构地区：[1]湖南省交通科学研究院,湖南长沙410015 [2]湖南大学环境科学与工程学院,湖南长沙410082

出　　处：《公路工程》2013年第2期71-74,共4页Highway Engineering

基　　金：交通运输部京港澳复线长湘高速"两型"科技示范工程(CXKJSF0207)

摘　　要：通过采用Cadna/A噪声模拟软件建立道路交通的预测模型,分析高速公路噪声源的特点,研究拟建高速公路建成后可能会给沿线的声敏感点带来不利的影响,并对高速公路沿线敏感点声屏障设置前后的声场分布情况进行了模拟研究。研究结果表明:声屏障高度为3 m时,敏感点昼夜噪声值均可达到国家标准,其最大降噪量为10.2 dB(A),最小降噪量也有7.1 dB(A),此研究结果可以为拟建高速公路沿线的敏感点噪声控制措施提供参考。In order to study the adverse impact on the noise-sensitive point along the proposed highway, models for transit noise prediction are set up with Cadna/A to analyzing the characteristics of the highway noise source. Furthermore, the distribution of sound field before and after setting the sound barriers in the sensitive points along the highway are predicted and analyzed. The results show that when the noise barrier is set to 3 meters, the noise-sensitive point noise value can achieve the national standard in the day and night time, with a maximum noise reduction value of 10.2 dB （A）and the minimum of 7..1 dB（A） , which can provide some reference about the noise control measures for the highway pro- jects.

关 键 词：高速公路 声敏感点 声屏障 噪声控制措施 CADNA A 

分 类 号：U491.91[交通运输工程—交通运输规划与管理]