Influence of Top Shape on Noise Reduction Effect of High-Speed Railway Noise Barrier

2nd International Conference on Frontiers of Materials Synthesis and Processing

Sun, Wenjuan^1 ; Liu, Li^1 ; Yuan, Hongli^1 ; Su, Qiaoping^2

Institute of Information Engineering, Anhui Xinhua University, Hefei, China^1

Electronic Communication Engineering College, Anhui Xinhua University, Hefei, China^2

关键词: Acoustic diffraction;    Acoustic transmission;    Empirical formulas;    High;    speed railways;    High speed railway noise;    Noise reduction effect;    Reference values;    Structural parameter;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/493/1/012043/pdf
DOI  :  10.1088/1757-899X/493/1/012043

来源: IOP

【 摘 要 】

The top shape of the noise barrier mainly affects the acoustic diffraction, scattering and interference, changes the acoustic transmission path, increases the number and difficulty of diffraction, and thus reduces the field noise. This paper investigates the structural parameters of T-shaped and Y-shaped noise barriers at the top, analyses the noise reduction effect of different structural noise barriers by empirical formula method, and draws a conclusion with universal reference value, which provides a reference for the selection of noise barrier and noise control of high-speed railways in China.