铁道运输与经济2024，Vol.46Issue(4)：209-218,10.DOI:10.16668/j.cnki.issn.1003-1421.2024.04.25
高速铁路站台混响理论及列车通过噪声影响研究
Reverberation Theory of High Speed Railway Platforms and Impact of Train Passing Noise
摘要
Abstract
High speed railway platforms belong to large-scale,semi-enclosed,and inhomogeneous long space,and the reverberation theory under the diffuse sound field condition can not be directly applied to the calculation of platform reverberation.This paper assumed that the reverberant field was uniformly distributed in the cross-section perpendicular to the length of the platform and combined it with the radiated noise prediction method of high speed railways.The theoretical methods for calculating the reverberation and the total sound level of high speed railway platforms were established.The simulation means based on the sound line method was used to analyze the influence characteristics of the total sound level,direct sound,and reverberation of the train passing through the platform at a high speed.The calculation errors of the established theoretical and simulation models were less than 1 dB(A)through on-site tests.The results show that the influence of reverberation on the platform is obvious,and the reverberation in some positions is even larger than the direct sound.The distribution of reverberation along the length of the platform is large in the middle and small at the ends.In the direction perpendicular to the line,the total sound level of the train passing noise is affected by the reverberation,and it decays more slowly with the distance than the direct sound.The theoretical calculation method meets the application requirements and greatly improves the calculation efficiency compared with the simulation method,which can provide a reliable theoretical and technical basis for predicting,evaluating,and controlling the reverberation and the total sound level of high speed railway platforms.关键词
列车通过噪声/仿真分析/噪声预测/声线法/混响Key words
Train Passing Noise/Simulation Analysis/Noise Prediction/Sound Line Method/Reverberation分类
交通工程引用本文复制引用
郑撼,刘兰华,李志强..高速铁路站台混响理论及列车通过噪声影响研究[J].铁道运输与经济,2024,46(4):209-218,10.基金项目
中国铁道科学研究院集团有限公司科研项目(2021YJ161) （2021YJ161）
中国国家铁路集团有限公司科技研究开发计划课题(J2021G012) （J2021G012）
