摘要
为明确汽车行驶状态下胎路耦合接触行为与沥青路面抗滑性能的衰变过程,基于道路耐久性影响因素,对不同粗集料下AC-13、SMA-13和OGFC-13沥青路面面层设计正交试验,对比分析了胎路耦合接触行为与沥青路面抗滑性能的变化规律;探讨了不同类型沥青混合料的胎路耦合接触行为与沥青混合料抗滑性能衰变的关系;归纳了胎路耦合接触行为对沥青混合料抗滑性能的影响。分析结果表明:汽车行驶状态下,道路运营过程中交通荷载等级、重载交通出现时间和重载交通持续时间等道路耐久性因素对沥青路面胎路接触面积影响较小,而对各种沥青路面抗滑性能衰变的影响均显著;汽车行驶状态下的胎路耦合摩擦行为不同于汽车制动状态下的胎路耦合摩擦行为,与沥青路面抗滑性能的衰变不存在明显的相关性关系,因此在研究汽车行驶状态下的沥青路面抗滑衰变规律时,仅需考虑将路面摩擦系数作为评价抗滑性能的主要指标。
In order to clarify the tire road coupling contact behavior and decay process of skid resistance of asphalt pavement under the driving state of vehicles,based on the influencing factors of road durability,orthogonal tests were carried out on the surface design of AC-13,SM-13 and OGFC-13 asphalt pavement with different coarse aggregates,and the variation rules of tire road coupling contact behavior and skid resistance of asphalt pavement were compared and analyzed.The relationship between the tire road coupling contact behavior of different asphalt mixtures and the decay of skid resistance of asphalt mixtures was discussed.The influence of tire road coupling contact behavior on skid resistance of asphalt mixture was summarized.The analysis results show that under the driving state of vehicles,the road durability factors,such as traffic load grade,heavy traffic occurrence time and heavy traffic duration,have little influence on the tire road contact area of asphalt pavement,but have significant influence on the decay of skid resistance of various asphalt pavement.The tire road coupling friction behavior under the driving state of a car is different from the tire road coupling friction behavior under the braking state of a car,and there is no significant correlation with the decay of the skid resistance of asphalt pavement.Therefore,it is only necessary to consider the road surface friction coefficient as the main indicator for evaluating the anti-slip performance,when the decay rules of skid resistance of asphalt pavement are studied under the driving state of vehicles.
作者
余苗
张正基
罗延生
赵晓宁
刘世康
YU Miao;ZHANG Zhengji;LUO Yansheng;ZHAO Xiaoning;LIU Shikang(School of Civil Engineering,Chongqing Jiaotong University,Chongqing 400074,China;Shenzhen Traffic Engineering Testing&Detection Center Co.Ltd.,Shenzhen 518112,Guangdong,China)
出处
《重庆交通大学学报（自然科学版）》
CAS
CSCD
北大核心
2023年第11期28-35,共8页
Journal of Chongqing Jiaotong University(Natural Science)
基金
重庆市自然科学基金项目(cstc2021jcyj-msxmX0554)
国家自然科学基金(青年基金)项目(51608085)
交通运输行业基金科技项目(2022-MS4-108)
山西省交通科技研发有限公司科研项目(2021-JKKJ-9)。
关键词
道路工程
胎路耦合
接触面积
摩擦系数
抗滑性能
highway engineering
tire road coupling
contact area
friction coefficient
skid resistance
