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| 基于乘用轮胎滚动下落法的PA路面噪声性能影响因素研究 |
| Study on the Influence Factors of Noise Performance of Porous Asphalt Pavement Based on the Passenger Tire-Rolling-Down Method |
| 投稿时间：2018-12-13 修订日期：2019-03-15 |
| DOI： |
| 中文关键词: 轮胎滚动下落法 PA路面 噪声性能 灰关联度 |
| 英文关键词: The tire-rolling-down method noise performance porous asphalt grey relational grade |
| 基金项目:国家自然科学基金项目（面上项目，重点项目，重大项目） |
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| 中文摘要: |
| 为了更好的模拟轮胎-路面交通噪声产生机理,提出了“轮胎滚动下落”的室内试验方法。基于此方法,研究不同体积参数(空隙率、路面厚度、公称最大粒径、TPS改性剂用量)对PA(Porous Asphalt)路面噪声性能的影响。研究表明：基于该室内试验方法,PA路面的噪声主体集中分布在400-5000Hz,噪声尖峰分布于630-800Hz,与实际交通噪声频谱图分布情况一致。随着空隙率、TPS用量以及路面厚度增大,A计权声压级结果明显降低,PA路面噪声性能显著改善；公称最大粒径的改变,引起声压水平的变化不甚明显。此外,灰关联度计算结果显示,不同因素对噪声性能影响程度大小依次为路面厚度>TPS用量>公称最大粒径>空隙率。 |
| 英文摘要: |
| In order to simulate the mechanism of tire-road traffic noise efficiently, the new laboratory test method of “tire-rolling-down” was used. Based on this method, the effects of different factors (void ratio, pavement thickness, nominal maximum size and TPS modifier dosage) on the noise performance of porous asphalt pavement are studied. Based on this lab test method, the results show that the noise main body is distributed in 400-5000 Hz, and the noise peaks are concentrated at 630-800 Hz for porous asphalt pavements, It is consistent with the spectrum distribution of field traffic noise. With the increase of void ratio、TPS dosage and the road thickness, A-weighted sound pressure level results are decreased, the noise performance of porous asphalt pavement improve significantly; but the variation of acoustic pressure level caused by the change of nominal maximum size is not obvious. In addition, The calculation result of grey relational analysis shows that,the influence degree of each factor on noise performance is the road thickness > TPS dosage > nominal maximum size > void ratio. |
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