| 等效道路线声源位置优化研究 |
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| 引用本文： | 蒋从双,吴瑞,杨洁.等效道路线声源位置优化研究[J].应用声学,2015,34(3):255-259. |
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| 作者姓名： | 蒋从双 吴瑞 杨洁 |
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| 作者单位： | 北京市劳动保护科学研究所,北京市劳动保护科学研究所,北京市劳动保护科学研究所 |
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| 摘 要： | 计算道路交通噪声时，一般将每个车道等效为1个线声源。有时，为了简化计算，将道路等效为1个线声源，等效线声源位置为道路中轴；或等效为2个线声源，等效线声源位置为道路两侧中心线或两侧最外车道中心线。推导不同等效方法下观测点噪声的计算公式，并探讨不同等效方法引起的误差。研究结果表明，将道路等效为2个线声源，等效线声源位置为道路两侧中心线的简化方法引起的误差最小。
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| 关 键 词： | 道路线声源，等效线声源位置，优化 |
| 收稿时间： | 2014/11/3 0:00:00 |
| 修稿时间： | 2015/4/21 0:00:00 |
Optimization of the equivalent position of road line-source |
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| Affiliation: | Beijing Municipal Institute of Labor Protection,Beijing Municipal Institute of Labor Protection,Beijing Municipal Institute of Labor Protection |
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| Abstract: | Generally, each vehicle lane is treated as a line-source when calculating road traffic noise. However, in order to simplify calculation, the entire road may be equivalent to a line-source located at centerline of the road, or equivalent to two line-sources located at centerline or centerline of outside lanes of each road side respectively. The calculation formulae of receiver points of different methods are deduced. Then derived errors are discussed. The results prove that the error derived from the method that the entire road is equivalent to two line-sources located at centerline of each road side is the smallest one. |
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| Keywords: | Road Line-Source Equivalent Position of the Road Line-Source Optimization |
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