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Estimating traffic noise for inclined roads with freely flowing traffic

机译:估算在交通畅通的倾斜道路上的交通噪声

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摘要

Traffic noise measurements on the kerbs of 19 independent inclined trunk roads with freely flowing traffic within the residential areas of Hong Kong are carried out in the present investigation. The performance of the existing noise prediction models in predicting traffic noise from inclined roads is evaluated. By regression analysis and simple physical consideration of the traffic noise production mechanisms, formulae for the prediction of the L_(A10), L_(A50), L_(A90) and L_(Aeq) are developed or re-calibrated. Results suggest tyre noise has the major contribution to the overall noise environment when the source is an inclined trunk road. Also, the road gradient is found to have a higher contribution to the traffic noise than assumed in the existing models, but becomes unimportant when the background noise level L_(A90) is concerned.
机译:在本次调查中,我们对19条独立倾斜的主干道在香港居民区内自由流动的路缘进行了交通噪声测量。评估了现有噪声预测模型在预测来自倾斜道路的交通噪声方面的性能。通过回归分析和交通噪声产生机制的简单物理考虑,开发或重新校准了预测L_(A10),L_(A50),L_(A90)和L_(Aeq)的公式。结果表明,当噪声源为倾斜的主干道路时,轮胎噪声对整个噪声环境有很大的影响。而且,发现道路坡度对交通噪声的贡献比现有模型中所假定的要大,但是当涉及背景噪声水平L_(A90)时,道路坡度变得不重要。

著录项

  • 来源
    《Applied Acoustics》 |2004年第2期|p.171-181|共11页
  • 作者

    S.K. Tang; K.K. Tong;

  • 作者单位

    Department of Building Services Engineering, The Hong Kong Polytechnic University, Hong Kong, China;

  • 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 声学;
  • 关键词

    traffic noise; environment;

    机译:交通噪声;环境;

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