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不同纹理混凝土路面的噪声特性

, PP. 16-20

Keywords: 道路工程,混凝土路面,刻槽,噪声,加速度法

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Abstract:

为了深入研究不同纹理混凝土路面的噪声特性,通过改变刻槽参数(槽宽、槽间距),得到具有不同纹理特征的混凝土板件;利用简单可行的加速度法,对混凝土板件进行噪声水平测试和噪声频谱分析。试验结果表明横向刻槽混凝土路面的噪声水平最高,其次为光面混凝土路面、纵向刻槽混凝土路面,多孔混凝土路面的噪声水平最低;对于横向刻槽混凝土路面,噪声水平随槽宽的增加而增大,纵向刻槽混凝土路面则呈相反趋势;当噪声频率大于1600Hz时,多孔混凝土路面对噪声具有较强的减弱能力,在整个噪声频率范围内,横向刻槽混凝土路面对噪声的减弱能力最差。

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