摘要
针对路面弯沉数据不服从正态分布的问题,提出基于小波变换的方法修正路面弯沉值。首先对采集的50组路面弯沉数据正态分布检验并分析弯沉数据与真实值存在偏差的原因。其次通过2σ法和箱线图法剔除异常值后再对数据采用小波变换进行处理,随后验证了原始数据和处理数据的相关关系,并建立弯沉数据处理前后特征值的关系模型,最后提出新的弯沉代表值计算公式。研究结果表明:路面弯沉原始数据的正态分布概率较低,不满足规范计算要求;经过箱线图法和小波变换的数据正态化分布概率达到88%,基本满足规范的计算要求,且未改变数据的原始特征;最后为简化数据处理的步骤通过建立数据处理前后特征值的关系模型,得出弯沉代表值的计算新公式。
Aiming at the problem that the pavement deflection data does not obey the normal distribution,a method based on wavelet transform is proposed to correct the pavement deflection value.Firstly,the normal distribution of the collected 50 groups of pavement deflection data is tested and the reasons for the deviation between the deflec⁃tion data and the real value are analyzed.Secondly,the abnormal values are eliminated by 2σmethod and box plot method,and then the data are processed by wavelet transform.Then the correlation between the original data and the processed data is verified,and the relationship model of the eigenvalues before and after the deflection data pro⁃cessing is established.Finally,a new calculation formula of deflection representative value is proposed.The resultsshow that the normal distribution probability of the original data of pavement deflection is low,which does not meet the requirements of standard calculation.The probability of normal distribution of data after box plot method and wavelet transform reaches 88%,which basically meets the calculation requirements of the specification,and does not change the original characteristics of the data.Finally,in order to simplify the steps of data processing,a new formula for calculating the representative value of deflection is obtained by establishing the relationship model of ei⁃genvalues before and after data processing.
作者
李刚
岑保坪
劳超卫
LI Gang;CEN Baoping;LAO Chaowei(Guangxi Jiaojian Engineering Testing and Consulting Co.,Ltd.,Nanning 530024,China;Nanning Road Construction Technology and Road Material Engineering Technology Research Center,Nanning 530024,China)
出处
《粘接》
2025年第8期63-67,共5页
Adhesion
基金
交通运输部2021年度交通运输行业重点科技项目(项目编号:2021-MS5-124)
广西交通运输行业科技项目(项目编号:桂交便函〔2020〕150号)。
关键词
沥青路面
落锤式弯沉值
小波变换
弯沉代表值计算公式
asphalt pavement
drop weight deflection value
wavelet transform
deflection representative value cal⁃culation formula
