| 低噪声沥青路面声学特性的理论初探 |
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| 引用本文： | 王佐民,吕伟民.低噪声沥青路面声学特性的理论初探[J].同济大学学报(自然科学版),1997,25(4):405-409. |
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| 作者姓名： | 王佐民 吕伟民 |
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| 作者单位： | 同济大学声学研究所!上海，200092(王佐民，倪乃琛)，同济大学道路与交通工程研究所!上海，200092(吕伟民) |
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| 摘 要： | 根据刚性骨加要多孔材料的微观理论具体分析了孔隙率，流阻率，扭曲因子和孔形因子对低噪声沥青中和面声学特性的影响，同时，讨论了路面厚度，双层路面结结构的影响；也估算了低噪声沥青面对轮胎与路面相 互作用所产生的单极子声源的影响。
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| 关 键 词： | 低噪声 沥青路面 声学特性 噪声控制 |
Theoretical Analysis on Acoustical Characteristics of Low Noise Asphalt Pavement |
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| Wang Zuomin.Theoretical Analysis on Acoustical Characteristics of Low Noise Asphalt Pavement[J].Journal of Tongji University(Natural Science),1997,25(4):405-409. |
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| Authors: | Wang Zuomin |
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| Abstract: | According to the microstructural theory of rigid-frame porous materials, the acoustical characteristics of low noise asphalt pavement is analysed in terms of four parameters-porosity, flow resistivity, tortuosity and pore shape parameter. The effects of pavoment thickness and two- layered structure, and the reduction of tyre/road noise are disccused too. Some results are obtained: the effect of porosity is the most important factor, and the acoustical characteristics of two-layered structure pavement is detcrmined only by the upper layer structure,when the pavement thickness is more than 40mm. The reduction of tyre/road monopole noise is about 3dB contributed by the low noise asphalt pavement |
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| Keywords: | Low noise Asphalt Pavement |
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