不同路面加铺层抗滑降噪效果室内研究

摘要

In order to study anti-skiding and noise-reducing perfomance of pavement overlays, which include the fiber-rubber micro-surfacing and Novachip ultra-thin wearing layer, in this paper, the influence factors of anti-sliding was researched by the surface structure depth test and friction coefficient test. By calibrating the background noise, the rutting test was used to simulate the effect of tire and pavement to analyze the noise-re-ducing of different anti-sliding layers. The results show that the amount and species of fiber are not significantly affected anti-sliding performance of the micro-surfacing. With the increase of load, the sound level of micro-surfacing was decreased, and that of Novachip ultra-thin layer was increased, but which is far less than that of the micro-surfacing and original pavement. The sound level of fiber-rubber micro-surfacing was decreased about 1.5dB, and that of Novachip ultra-thin layer was reduced by about 3dB after running 8h. The relationship of noise-reducing effect of different overlays is:Novachip ultra-thin wearing layer >polyester fiber-rubber micro-surfacing > basalt fiber-rubber micro-surfacing. The rutting test can be used to evaluate the indoor noise test of different overlays.%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 dB,Novachip超薄磨耗层降低约3 dB,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。