摘要
为比较平均断面深度(MPD)和传感器测量构造深度(SMTD)2种沥青路面构造深度评价指标,利用多功能路况快速检测设备采集沥青路面MPD与SMTD数据,并基于估计重复系数和Bland-Altman法进行MPD与SMTD的可重复性和一致性分析.研究发现:平行测量次数的增加会导致采集数据内部总误差增加,但可以有效降低随机误差变化范围的影响,提高数据采集的可靠性;MPD的估计重复系数平均值低于SMTD的估计重复系数平均值,说明MPD的测量可重复性更好;MPD比SMTD平均低0.009 mm,这个偏倚在工程应用中是可以接受的,说明MPD和SMTD两种不同评价指标具有可互换性;MPD与SMTD差值的95%一致限(LOA)范围(-0.105~0.087 mm)和估计重复系数范围(-0.094~0.094 mm)接近,说明影响MPD与SMTD一致性的主要因素是两者差值的可重复性.
In order to compare the evaluation indices of the asphalt pavement texture depth,including the mean profile depth(MPD)and the sensor measured texture depth(SMTD),the MPD and SMTD of the asphalt pavement texture depth were collected by the multifunctional high-speed highway condition monitor and the repeatability and agreement analysis of MPD and SMTD were performed based on the estimated repeatability coefficient and the Bland-Altman method.The results show that the increase in the parallel measurement number will increase the total internal error of the collected data,but it can effectively reduce the impact of variation range of random coarse errors and improve the reliability of data collection.The average value of the estimated repetition coefficient of MPD is lower than that of SMTD,indicating that the measurement repeatability of MPD is better.MPD is lower than SMTD by an average of 0.009 mm,and the difference is acceptable in engineering applications,indicating that the MPD and SMTD evaluation indices are interchangeable.The 95%limit of agreement(LOA)of MPD and SMTD difference ranging from-0.105 to 0.087 mm is close to the estimated repeatability coefficient ranging from-0.094 to 0.094 mm,indicating that the repeatability of the difference between MPD and SMTD is the main influencing factor of the agreement of MPD and SMTD.
作者
刘长波
钱振东
陈磊磊
关伟
Liu Changbo;Qian Zhendong;Chen Leilei;Guan Wei(ITS Research Center,Southeast University,Nanjing 211189,China;Key Laboratory of Road Structure and Material of Transport Industry,Research Institute of Highway,Ministry of Transport,Beijing 100088,China)
出处
《东南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2019年第6期1193-1198,共6页
Journal of Southeast University：Natural Science Edition
基金
国家重点研发计划资助项目(2017YFC0840201)
国家自然科学基金资助项目(51678146)
关键词
沥青路面
构造深度
评价指标
可重复性
一致性分析
asphalt pavement
texture depth
evaluation index
repeatability
agreement analysis
