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Characterisation of tram noise emission and contribution of the noise sources

机译:电车噪声排放的表征和噪声源的贡献

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摘要

The recent expansion of French tram networks and the related local residential complaints mean that a better knowledge of the situations leading to negative reactions from the local inhabitants is required. Hence a research project has been conducted to evaluate and describe noise and vibration emission of trams as well as the perception by the local residents. This paper investigates tram noise emission on common straight track sections, involving two vehicle scales. First the acoustic power and the mean vertical directivity of the total tramset is assessed using an arc of microphones. Then the localisation and the analysis of the main noise sources are performed by means of a cross array during the tram pass-by. Two tram types representing two generations of French rolling stock, both running on two sites with distinct track characteristics, have been investigated considering the effect of speed, tram type, and track type on the noise source contributions and spectral features. Most sources are located in the lower part of the trams, mainly related to rolling noise, with a strong dependence on speed and track type. The tram type dependency, although globally of second importance, influences greatly the noise spectral distribution and behaviour. The HVAC was the only roof-mounted source which could be detected; its contribution towards building storeys becomes significant in configurations of low rolling noise. A tram noise emission model based on the various noise sources has been developed.
机译:法国电车网络的最新扩展以及相关的当地居民投诉意味着,需要对导致当地居民的负面反应的情况有更深入的了解。因此,已经进行了一项研究项目,以评估和描述电车的噪声和振动辐射以及当地居民的感知。本文研究了涉及两个车辆衡的普通直线路段的电车噪声排放。首先,使用一圈麦克风评估整个电车的声功率和平均垂直方向性。然后,在电车通过过程中,通过交叉阵列对主要噪声源进行定位和分析。考虑到速度,电车类型和轨道类型对噪声源贡献和频谱特征的影响,已经研究了代表两代法国机车车辆的两种有轨电车类型,它们都在两个具有不同轨道特性的站点上运行。大多数声源位于电车的下部,主要与滚动噪声有关,并且强烈依赖于速度和轨道类型。有轨电车的类型依赖性,尽管在全球范围内具有第二重要性,但在很大程度上影响着噪声频谱分布和行为。暖通空调是唯一可以检测到的屋顶安装源。在低滚动噪声的配置中,其对建筑物楼层的贡献变得非常重要。已经开发了基于各种噪声源的电车噪声排放模型。

著录项

  • 来源
    《Applied Acoustics》 |2011年第7期|p.437-450|共14页
  • 作者单位

    Laboratoire Transport Environnement, INRETS, 25 Avenue F. Mitterrand, Case 24, 69675 Bron cedex, France;

    Laboratoire Transport Environnement, INRETS, 25 Avenue F. Mitterrand, Case 24, 69675 Bron cedex, France;

    Laboratoire Transport Environnement, INRETS, 25 Avenue F. Mitterrand, Case 24, 69675 Bron cedex, France;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    tram noise emission; rolling noise; traction noise; microphone array; directivity;

    机译:电车噪音排放;滚动噪音;牵引噪声;麦克风阵列方向性;
  • 入库时间 2022-08-17 13:30:34

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