Abstract:

The main noise source of the metro is the wheel-rail noise. This noise will generate a reverberation sound field in the tunnel after reflecting from the tunnel’s wall and then passed into the carriage through the carriage’s structure which will affect the riding comfort. In this paper, the qualitative analysis about the influence fact of the wheel-rail noise in classical theories and relevant standards were studied. Using the date tested in the domestic metro line to make a quantitative analysis on each factor’s specific impact on the noise inside the carriage. On this basis, comprehensive control suggestions on the noise inside the metro were put forward to provide conference for the subway route planning.

摘要：

地铁车辆的主要噪声源是轮轨噪声，该噪声经过隧道壁面的反射，在隧道内形成混响声场，然后透过车体结构传递到车内，影响车内乘坐舒适性。研究经典理论和相关标准中对轮轨噪声影响因素的定性论述，通过国内地铁实测数据，定量分析各因素对车内噪声的具体影响程度。在此基础上，提出地铁车内噪声综合控制建议，供地铁线路规划设计参考。

关键词: 声学, 地铁, 粗糙度, 轨道衰减率, 混响, 隔声量