不同形式路面表面功能对比研究

为改善路面行车舒适性与安全性,采用手动铺砂法、动态摩擦测试仪法、车载声强(OBSI)轮胎/路面噪声测试法对于横向刻槽、纵向刻槽、露石、金刚石研磨水泥混凝土路面、开级配沥青混凝土路面的构造深度、动态摩擦系数、轮胎/路面噪声进行了对比研究。结果表明:纵向刻槽水泥混凝土路面构造深度大于露石、金刚石研磨、横向刻槽水泥混凝土路面。车速增加,路面动态摩擦系数不断减小,其中纵向刻槽路面的动态摩擦系数稍高于横向刻槽及金刚石研磨路面。同时开级配沥青混凝土路面比刻槽、金刚石研磨、露石的混凝土4个形式路面的噪声水平降低5~10 d B,其降噪效果良好。

COMPARATIVE RESEARCH ON DIFFERENT FORMS OF PAVEMENT SKID AND NOISE REDUCTION SURFACE FEATURES

In order to improve road safety and driving comfort, the research on different forms of pavement skid and noise reduction fea- tures were compared. The texture depth, dynamic friction coefficient, pavement noise＇of longitudinal groove, exposed stone, diamond grinding concrete pavement, open - graded asphalt concrete pavement has been studied by manual sanding, dynamic friction tester law, OBSI methods. The results showed that： a longitudinal groove depth of cement concrete pavement structure is greater than the exposed stone, diamond grinding, horizontal groove cement concrete pavement, With vehicle speed increases, the dynamic friction coefficient of the road surface decreases continuously, and dynamic friction coefficient of the longitudinal groove is greater than the transverse groove and diamond grinding surface. Open -graded asphalt concrete pavement road noise is lower than the grooved, diamond grinding, ex- posed stone pavement, Its value can to 5 -10 dB, its noise reduction effect is good.