| 系列点声源模拟铁路噪声的误差分析 |
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| 引用本文： | 焦大化.系列点声源模拟铁路噪声的误差分析[J].铁道学报,2004,26(5):14-19. |
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| 作者姓名： | 焦大化 |
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| 作者单位： | 中国铁道科学研究院,环控劳卫研究所,北京,100081 |
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| 基金项目： | 铁道部科研基金项目(项目编号90G19) |
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| 摘 要： | 根据声学基本理论分析了采用3种指向特性的系列点声源,模拟铁路噪声线声源的误差问题,论证了点源模拟误差和长度模拟误差与各种影响参数的定量关系,给出声源模拟法预测铁路列车运行噪声中确定系列点声源的点源间距和总长的方法,解决了铁路建设项目环境影响评价中铁路噪声预测的一个重要技术问题。
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| 关 键 词： | 声源模拟 铁路噪声预测 环境噪声 |
| 文章编号： | 1001-8360(2004)05-0014-06 |
| 修稿时间： | 2004年3月24日 |
Error Analysis of Railway Noise Modeled by a Series of Point Sound Sources |
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| JIAO Da-hua.Error Analysis of Railway Noise Modeled by a Series of Point Sound Sources[J].Journal of the China railway Society,2004,26(5):14-19. |
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| Authors: | JIAO Da-hua |
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| Abstract: | A series of point sound sources in three kinds of directivity are used to model line sound sources of railway noises, the error of which is analyzed. Quantitative relationship of the point-source modeling error, length modeling error and other influencing factors is demonstrated. A sound source modeling method is provided to set point source spaces and total distance during noise prediction of running trains, so to resolve an important technical problem of noise prediction in environmental impact assessment of railway projects. |
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| Keywords: | sound source modeling prediction of railway noise environmental noise |
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