郑州大学学报（工学版）2025，Vol.46Issue(3)：67-74,8.DOI:10.13705/j.issn.1671-6833.2025.03.003
地铁出入线反射型声屏障降噪效果影响因素分析
Analysis of Influencing Factors of Noise Reduction Effectiveness of Reflective Sound Barrier in Metro Access Line
摘要
Abstract
In order to improve resident living environment along the metro access line,one section of Zhengzhou metro access line was taken as the example,the fast multi-pole boundary element method was considered,the sound barrier model was constructed with Virtual Lab acoustic simulation software,the wheel rail noise of low-speed subway train was simplified as a two-point sound source,the insertion loss of sound pressure level was adopted to characterize the noise reduction effectiveness of the sound barrier,and the influence of some factors on noise reduc-tion effectiveness were analyzed such as the sound source sound pressure level,sound barrier height,distance be-tween sound barriers and sound sources,the top structure of the sound barrier and the location in the sound shadow area.According to the simulation results,the vertical Y-shaped reflective sound barrier with 4 m height and 3 m distance from the center of dual sound sources was set up on the metro access line,the noise signals were in-situ measured,the noise characteristic parameters were obtained,and the simulation results had good agreement with the test results,the simulation calculation was verified to be reasonable.The closest distance between buildings a-long the metro access line and the center of the track is 30 meters,the noise of residential buildings with sound bar-rier along the line meet with relevant regulatory requirements,Y-shaped sound barrier had better noise reduction performance,and the relevant achievements could provide parameters for the noise reduction design and perform-ance evaluation of metro access line.关键词
地铁出入线/声屏障/插入损失/降噪效果/影响因素Key words
metro access line/sound barrier/insertion loss/noise reduction effectiveness/influence factors引用本文复制引用
徐平,杜炫錡,何况,杨延峰..地铁出入线反射型声屏障降噪效果影响因素分析[J].郑州大学学报（工学版）,2025,46(3):67-74,8.基金项目
国家自然科学基金资助项目(51278467) （51278467）
河南省科技攻关项目(242102240019) （242102240019）
