基于道路服务水平的快速路噪声影响预测  

Prediction of expressway noise impact based on road service level

作　　者：苏凯 廖明旭 李林潇 贺玉龙 邓少奇 张群 SU Kai;LIAO Ming-xu;LI Lin-xiao;HE Yu-long;DENG Shao-qi;ZHANG Qun(Faculty of Geosciences and Environmental Engineering,Southwest Jiaotong University,Chengdu 611756,China;Ecological Environment Design and Research Institute,China Railway Eryuan Engineering Group Co.,Ltd.,Chengdu 610031,China)

机构地区：[1]西南交通大学地球科学与环境工程学院,成都611756 [2]中铁二院工程集团有限责任公司生态环境设计研究院,成都610031

出　　处：《安全与环境学报》2022年第1期486-494,共9页Journal of Safety and Environment

基　　金：成都市生态环境局项目(Q113520Q02002)。

摘　　要：以城市快速路为例,分析不同道路服务水平快速路的噪声影响情况,并提出基于道路服务水平指标建模预测道路旁建筑物的修筑距离。在Cadna/A软件中建立道路模型及高层住宅模型,并在此基础之上进行声环境模拟预测,提出考虑降噪措施可以缩短建筑物与道路之间修筑距离。结果表明:对于一级服务水平道路,其噪声污染由区间1至4约增强6 dB;当道路处于二级、三级服务水平时,从区间1至4道路噪声污染变化微小。对于双向8车道(辅路双向6车道)快速路在无任何障碍物及不采取任何降噪措施的情况下,建筑物位置的选取动辄就要距道路最外侧车道中心线上百米乃至几百米,经过降噪措施之后,建筑物修筑距离可以缩短到数十米以内。Taking urban expressways as an example,this paper analyzes the influence of noise on expressways at different road service levels and first predicts the construction distance of roadside buildings based on the modeling of road service level index.The model of road and high-rise residential building is established in the Cadna/A software,and the road parameters of expressway under different service levels are determined according to the Urban Road Engineering Design Code(CJJ 37—2012)in which the acoustic environment is simulated and predicted.In this paper,the noise standard distance of buildings is simulated when only roads and sensitive buildings exist,and it is concluded that considering noise reduction measures,the distance between buildings and roads can be shortened.Taking first-class service level roads as an example,the noise standard distance of buildings under different noise control measures is predicted.The results show that the noise pollution of the firstclass service level roads increases by about 6 dB from Interval 1 to Interval 4.When the road is at the second and third level of service,the change of noise pollution from the first to the fourth level is very small.Especially when the road service level is at the third level,the change of noise pollution from interval 1 to interval 4 can be ignored.For the two-way 8-lane(Auxiliary Road 2-way 6-lane)expressway,without any obstacles and any noise reduction measures,the location of the building is often chosen 100 meters or even several hundred meters from the centerline of the outermost lane of the road,after the noise reduction measures,the building construction distance can be reduced to tens of meters.In general,the noise standard distance of low-rise buildings is closer than that of high-rise buildings.Different noise reduction methods have different noise reduction effects and the combined use of noise reduction methods can effectively shorten the noise standard distance of buildings.

关 键 词：环境工程学 城市快速路 交通噪声 噪声预测 Cadna/A 道路服务水平 建筑物选址 

分 类 号：X827[环境科学与工程—环境工程]