高架轨道沿线居民区噪声特性与降噪措施研究  

Research on Noise Characteristics and Noise Reduction Measures in Residential Areas along Elevated Tracks

作　　者：黄苑仓 彭镜 HUANG Yuancang;PENG Jing(College of Traffic&Transportation,Chongqing Jiaotong University,Nanan District Chongqing 400074,China)

机构地区：[1]重庆交通大学交通运输学院,重庆南岸区400074

出　　处：《四川职业技术学院学报》2025年第2期140-145,共6页Journal of Sichuan Vocational and Technical College

摘　　要：为探讨高架钢轮/钢轨沿线居民区的轨道噪声特性及各降噪措施的降噪效果,对符合基本要求的居民区进行现场噪声实测,分析水平噪声声压级与频程频谱特性.利用Cadna/A软件进行仿真模拟,研究竖直声屏障、全封闭声屏障及小区外部基础设施与轨道声屏障耦合的降噪效果.结果表明:在轨道高度与地面差距为3.3 m时,水平噪声声压级与轨道中心线水平距离呈负相关关系;频程频谱特性由中低频段噪声占据主导地位,峰值频率出现在50~80 Hz;竖直声屏障与全封闭声屏障降噪效果差异不显著;围墙遮挡与轨道声屏障耦合条件下,相较于单独设置轨道声屏障,轨道噪声平均衰减7.88%,最高衰减10.29%.In order to explore the track noise characteristics of residential areas along the elevated steel drum and rail and the noise reduction effect of various noise reduction measures,the on-site noise measurement was carried out in the residential areas that meet the basic requirements,and the horizontal noise sound pressure level and frequency spectrum characteristics were analyzed.Cadna/A software was used to simulate the noise reduction effect of vertical sound barrier,fully enclosed sound barrier and the coupling of external infrastructure and track sound barrier.The results show that when the difference between the orbit height and the ground is 3.3m,the horizontal noise sound pressure level is negatively correlated with the horizontal distance of the orbit center line,and the spectral characteristics of the frequency range are dominated by the noise in the middle and low frequency bands,and the peak frequency appears at 50-80Hz.There was no significant difference in noise reduction effect between vertical and fully enclosed sound barriers.Under the coupling condition of fence occlusion and track sound barrier,compared with the track sound barrier alone,the average attenuation of track noise is 7.88%,and the highest attenuation is 10.29%.

关 键 词：高架轨道 噪声特性 降噪措施 降噪效果 仿真模拟 

分 类 号：U29-3[交通运输工程—交通运输规划与管理]