| 用边界元法研究不同顶端声屏障的性能 |
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| 引用本文： | 蔡俊,林琼,蔡伟民.用边界元法研究不同顶端声屏障的性能[J].噪声与振动控制,2006,26(3):89-91,109. |
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| 作者姓名： | 蔡俊 林琼 蔡伟民 |
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| 作者单位： | 上海交通大学,环境科学与工程学院,上海,200240 |
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| 摘 要： | 交通噪声已成为城市主要污染源之一.目前控制交通噪声的主要措施是采用声屏障结构.考虑各种变化因素（表面声学特性、频率等） 的影响,应用边界元方法对不同顶端结构的声屏障降噪性能进行了计算研究.通过数据的对比分析,结果表明：作全吸收处理的树杈形声屏障整体降噪效果最好.
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| 关 键 词： | 声学 声屏障 边界元 顶端 |
| 文章编号： | 1006-1355（2006）03-0089-03 |
| 收稿时间： | 2005-10-25 |
| 修稿时间： | 2005-10-25 |
Study on Barrier Properties with Different Top Shapes by Using Boundary Element Method |
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| CAI Jun,LIN Qiong,CAI Wei-min.Study on Barrier Properties with Different Top Shapes by Using Boundary Element Method[J].Noise and Vibration Control,2006,26(3):89-91,109. |
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| Authors: | CAI Jun LIN Qiong CAI Wei-min |
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| Affiliation: | School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China |
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| Abstract: | Road traffic noise has become one of the major urban pollution sources.At present,the main measurement used to reduce traffic noise is noise barrier.Considered the effects of some factors,Boundary Element Method(BEM) was adopted to calculate barrier properties with different top shapes.Spectral efficiency comparisons for the various barriers have been conducted.The results showed 'tree'-shaped top barrier with full absorption performed best in noise attenuation property. |
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| Keywords: | acoustics noise barrier boundary element method top shape |
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