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| 骨架密实型低噪声路面的声振特性 | |
| 引用本文： | 曹卫东,杨永顺,吕伟民.骨架密实型低噪声路面的声振特性[J].交通运输工程学报,2007,7(2):55-58. |
| 作者姓名： | 曹卫东 杨永顺 吕伟民 |
| 作者单位： | 1. 山东大学,土建与水利学院,山东,济南,250061 2. 山东省交通厅公路局,山东,济南,250002 3. 同济大学,交通运输工程学院,上海,200092 |
| 基金项目： | 上海市科委科技攻关项目(03dz12025) |
| 摘 要： | 为探讨骨架密实型低噪声路面的降噪机理,分别采用驻波管装置测试了SDQP路面的吸声系数,重复加载法测试了SDQP混合料的复合模量,轮胎/路面振动测试装置研究了轮胎在不同路面上的垂直振动衰减特性。结果表明SDQP路面与SMA路面的吸声系数没有明显的差异,在整个频段上吸声系数很小;SDQP混合料的动态模量随着橡胶颗粒掺量的增加呈下降趋势,而阻尼逐渐提高;轮胎在SDQP路面的衰减系数最大,且随着橡胶颗粒掺量的增加而增大,说明SDQP路面具有较好的阻尼减振降噪能力,吸声降噪性能并不占优。 |
| 关 键 词： | 路面工程 骨架密实型低噪声路面 橡胶颗粒 吸声 振动 减振 机理 |
| 文章编号： | 1671-1637(2007)02-0055-04 |
| 修稿时间： | 2006-11-18 |
Properties of acoustics and vibration of skeleton dense quiet pavement |
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| Cao Wei-dong,Yang Yong-shun,Lu Wei-min.Properties of acoustics and vibration of skeleton dense quiet pavement[J].Journal of Traffic and Transportation Engineering,2007,7(2):55-58. | |
| Authors: | Cao Wei-dong Yang Yong-shun Lu Wei-min |
| Institution: | 1. School of Civil Engineering, Shandong University, Jinan 250061, Shandong, China; 2. Road Bureau, Department of Communications of Shandong Province, Jinan 250002, Shandong, China; 3. School of Transportation Engineering, Tongji University, Shanghai 200092, China |
| Abstract: | In order to study the noise reduction mechanism of skeleton dense quiet pavement(SDQP),the absorption coefficient,complex moduli of SDQP mixture and the properties of vertical vibration attenuation of tire aimed at different pavements were tested by respectively using standing-wave meter,repetitive loading method and tire/pavement vibration test system.Test result shows that the absorption coefficient of SDQP is close to that of SMA,the values of the absorption coefficients are very small in all frequency bands,and the dynamic moduli of SDQP decreases with the increase of rubber granules content,while the damping of SDQP increases;the attenuation coefficient of tire placed on SDQP is the maximum,and increases with the increase of rubber granules content,which indicates that SDQP has good noise reduction ability of damping and vibration attenuation,and the primary mechanism of noise reduction is not sound absorption.4 tabs,5 figs,10 refs. |
| Keywords: | pavement engineering skeleton dense quiet pavement rubber granules sound absorption vibration vibration attenuation mechanism |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |