不同路面加铺层抗滑降噪效果室内研究

发布时间：2018-06-21 21:11

本文选题：道路工程 + 纤维橡胶微表处　；参考：《铁道科学与工程学报》2017年01期

【摘要】：为了研究隧道内路面加铺层的抗滑降噪效果,通过表面构造深度试验和摩擦系数试验,研究常用纤维橡胶微表处及Novachip超薄磨耗层的抗滑性能影响因素;并通过对背景噪声标定,以车辙试验模拟轮胎与路面作用,对不同抗滑加铺层的降噪效果进行对比分析。试验结果表明:纤维掺量和种类对纤维橡胶微表处的抗滑性能影响不显著;随荷载作用次数增加,纤维橡胶微表处声级减小,而Novachip超薄磨耗层声级增大,但远低于微表处及原路面声级;车辙运行8 h时纤维橡胶粉微表处声级降低约1.5 d B,Novachip超薄磨耗层降低约3 d B,不同加铺层的降噪效果:Novachip超薄磨耗层聚酯纤维橡胶微表处玄武岩纤维橡胶微表处,可通过车辙试验来评价不同抗滑加铺层的室内噪声测试。
[Abstract]:In order to study the anti-skid and noise reduction effect of the pavement overlay in tunnel, the factors affecting the anti-slip performance of the fiber rubber microsurfacing and Novachip ultra-thin wear layer were studied by the surface structure depth test and friction coefficient test, and the background noise was calibrated. The effect of noise reduction of different anti-skid overlay was compared and analyzed with rutting test to simulate the effect of tire and road surface. The results show that the influence of fiber content and type on the anti-slip performance of fiber rubber microsurface is not significant, and the sound level of fiber rubber microsurface decreases with the increase of the number of loads, while the sound level of Novachip ultra-thin wear layer increases. But it is much lower than the sound level at the micro-surface and the road surface. After 8 h of rutting operation, the sound level of fiber rubber powder microsurface was reduced by about 1.5 days, and the ultra-thin wear layer of Novachip was reduced by about 3 dB. The noise reduction effect of different overlay layers was: Novachip ultra-thin wear layer, polyester fiber rubber microsurface, basalt fiber rubber microsurface. The indoor noise test of different anti-slip overlay can be evaluated by rutting test.
【作者单位】：河南南阳市公路管理局;长安大学特殊地区公路工程教育部重点实验室;广西交通科学研究院;
【基金】：国家自然科学基金资助项目(51008031) 陕西省交通科技资助项目(2014-01K)
【分类号】：U416.2

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