摘要
路面抗滑性是评价路面性能的关键指标之一,常用的评价指标有摆值BPN和横向力系数SFC,但是二者的联系还未有统一的说法。基于此,根据《公路沥青路面养护技术规范》(JTJ 5142—2019)第四章中的规定,建立了一种关于SFC与BPN之间的转换关系,并通过分析不同路段的实测数据,对转换关系进行检验。研究表明:根据《公路沥青路面养护技术规范》(JTJ 5142—2019)建立的转换关系符合一次函数特征;不同路段的BPN和SFC实测数据变化趋势大致相同;BPN和SFC实测数据的拟合结果与建立的转换关系十分接近,存在些许误差,经过分析这些误差可能来源于实测路段的地形特征、温度、检测速度以及道路圆曲线半径的影响因素横向力系数μ等因素。
The pavement skid resistance is one of the key indexes to evaluate the pavement performance.The commonly used evaluation indexes include swing value BPN and lateral force coefficient SFC,but the relationship between the two has not been unified.Based on this,according to the provisions in Chapter 4 of the Technical Specification for Highway Asphalt Pavement Maintenance(JTJ 5142—2019),a kind of conversion relationship between SFC and BPN is established,and the conversion relationship is tested by analyzing the measured data of different road sections.The research shows that:the conversion relationship established according to the Technical Specification for Highway Asphalt Pavement Maintenance(JTJ 5142—2019)conforms to the characteristics of linear function;the variation trend of BPN and SFC measured data in different road sections is roughly the same;the fitting results of the measured data of BPN and SFC are very close to the established conversion relationship,with some errors.After analysis,these errors may come from the topographic characteristics,temperature,detection speedof the measured road section and the influencing factors of the radius of the road circular curve,the lateral force coefficientμand so on.
作者
任宝行
Ren Baohang(Liaoning Highway Surveying and Designing Company,Shenyang 110006,China)
出处
《北方交通》
2022年第9期57-61,共5页
Northern Communications
关键词
路面抗滑性
摆值
横向力系数
转换关系
影响因素
Pavement skid resistance
Swing value
Lateral force coefficient
Conversion relationship
Influencing factor
