基于沥青路面抗滑性能评价的新指标研究

RESEARCH ON NEW INDEX BASED ON EVALUATION OF ANTI-SLIDING PERFORMANCE OF ASPHALT PAVEMENT

基于国际摩阻指数建立以铺砂法构造深度和摆值为输入参数的抗滑性能评价新指标高速摆值,并提出高速摆值的技术标准。进而实测某高速公路沥青路面的横向力系数、摆值及构造深度并换算高速摆值,分别进行各指标之间的相关性分析,以验证高速摆值指标的适用性。发现高速摆值指标与反映路表综合抗滑能力的横向力系数指标相关性较好,其可用于室内抗滑性能研究评价新指标,为基于行车安全的沥青路面设计阶段提供更切合实际情况的技术标准。

Based on the international friction index, the high-speed pendulum value of the new index of anti-sliding performance evaluation using the sanding method to construct the depth and the pendulum value as input parameters is established, and the technical standard of high-speed pendulum is proposed. Furthermore, the lateral force coefficient, pendulum value and structural depth of a certain highway asphalt pavement are measured and the highspeed pendulum value is converted, and the correlation analysis between each index is carried out to verify the applicability of the high-speed pendulum index. It is found that the high-speed pendulum index has a good correlation with the lateral force coefficient index reflecting the comprehensive anti-sliding ability of the road surface, and it can be used for the new evaluation index of indoor anti-sliding performance. It also provides a more realistic technical standard for the asphalt pavement design phase based on driving safety.