基于滑行通过法的水泥混凝土路面噪声特征  被引量:1

Noise Characteristic of Concrete Pavement Based on the Coast-by Method

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作  者:赵丽萍[1] 刘冬[1] 李波[2] 

机构地区:[1]陕西铁路工程职业技术学院道桥工程系,渭南714000 [2]兰州交通大学甘肃省道路桥梁与地下工程重点实验室,兰州730070

出  处:《武汉理工大学学报》2012年第10期53-57,共5页Journal of Wuhan University of Technology

基  金:国家西部交通建设科技项目(2007 3182 2301-8);甘肃省交通建设科技项目(2011)

摘  要:利用滑行通过法对5条不同纹理构造的混凝土路面的噪声特征进行了测试。在此基础上,分析了不同速度条件下刻槽混凝土路面与光面混凝土路面噪声水平的差异,得到了车辆以80km/h速度通过测试路段时的1/3倍频程频谱分布特征。结果表明,光面水泥混凝土路面比横向刻槽水泥混凝土路面噪声水平低1.5~2dBA;随着槽深的增大,横向刻槽混凝土路面噪声会增大;随着车速的提高,噪声也相应增大;水泥混凝土路面/轮胎相互作用噪声频谱主要分布在200~2 000Hz之间;随着1/3倍频程频率的增加,声压级会逐渐增大,增大到一定值时就会逐渐减小,最大声压级对应的频率一般在800~1 250Hz之间。Noise characteristics were measured by coast-by method for five concrete pavement with different texture.Based on this,the differences of noise level between groove and smooth concrete pavement was researched when vehicle passed by the test section at different speed.Characteristic of 1/3 octave spectrum distribution was analyzed when vehicle passed by the test sections with speed of 80 km/h.The result show that noise level of smooth cement concrete pavement is 1.5~2.0 dBA smaller than transverse groove cement concrete pavement.As the groove depth increases,the noises of transverse groove concrete pavement become greater.As the speed increases,the noise will also increase accordingly.Noise spectrum of interaction between cement concrete pavement and tire is mainly distributed between 200~2 000 Hz.With the increasing of 1/3 octave frequency,the sound pressure level will increase gradually.When it increases to a certain value,it will begin to reduce.And the frequency corresponding to maximum sound pressure level is between 800~1 250 Hz.

关 键 词:混凝土路面 噪声特征 滑行通过法 刻槽 光面 

分 类 号:U416.2[交通运输工程—道路与铁道工程]

 

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