高速铁路轮轨噪声预测分析

基于高速铁路轮轨噪声机理,对高速铁路轮轨滚动噪声预测方法进行分析。建立高速铁路轮轨噪声预测分析模型,为轮轨噪声的控制提供必要的依据。在探讨列车—轨道相互作用关系、轮轨表面粗糙度、轮轨接触滤波、噪声辐射比、轮轨系统噪声辐射、地面的声反射等问题的基础上,对我国快速客运专线的轮轨噪声进行了数值仿真预测。给出轮轨噪声的频谱特性、距离衰减特性及随运行速度的变化规律。

Prediction and Analysis of Wheel/Rail Noise for High-speed Railway

Based on the mechanism of wheel/rail noise for high-speed railway, the prediction method of the average wayside wheel/rail rolling noise when a train is passing is analyzed. The noise prediction analysis model is established, thus paving the way for wheel/rail noise control. On the basis of the study on the train/track interaction, wheel/rail surface roughness, wheel/rail contact area filtering, the radiation of wheel/rail system noise (rail, wheel and sleeper), and the noise ratio of sound radiation and sound reflection of the ground, the paper makes the numerical simulation prediction of the wheel/rail noise of the first dedicated passenger railway in China. It presents the spectrum characteristics of the wheel/rail noise, the distance attenuation characteristics and the rule varying with running speed.