基于改进的希尔伯特黄变换的路面纹理与抗滑性能研究
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作者:
作者单位:

1.新疆大学建筑工程学院;2.清华大学

作者简介:

通讯作者:

中图分类号:

U416.2

基金项目:

国际项目:交通基础设施全自动数据采集及智能分析平台建设(20203910013)


Application of Improved Hilbert-Huang Transform in Pavement Texture and Skid-resistance Study
Author:
Affiliation:

1.School of Architecture and Engineering,Xinjiang University;2.Department of Civil Engineering,Tsinghua university

Fund Project:

Construction of data collection and analysis platform for transportation infrastructure management(20203910013)

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    摘要:

    通过分析路面三维纹理信息,研究路面纹理与抗滑性能的相关性。实验首先通过高程精度为0.01mm的三维线激光构造仪分别提取AC-13和AC-16车辙板试件的沥青面层三维纹理信息。运用基于集合经验模态分解(EEM)算法的最优降噪光滑模型对三维纹理信息进行滤波降噪,并对路面纹理信息进行三维重构。然后通过补充集合经验模态分解(CEEMD)算法对二维纹理信号进行分解得到固有模态函数IMFs,根据各IMFs与原信号的相关性,将相关性最高的IMF做希尔伯特变换得到瞬时频率和瞬时幅值。最后提出最大相关系数(Rcm),将Rcm作为表征抗滑性能的指标。试验结果表明:Rcm与路面摩擦系数的相关性在0.8以上。将Rcm作为新的抗滑性能评价指标具有优异的可行性。

    Abstract:

    By analyzing the three-dimensional texture information of pavement, the correlation between pavement texture and skid resistance is studied. In the experiment, three-dimensional line laser profile instrument with an accuracy of 0.01mm was used to extract the three-dimensional texture information. The asphalt surface layer of the AC-13 and AC-16 rut plate test specimens were used respectively. The optimal noise reduction smoothing model based on the ensemble empirical mode decomposition (EEM) algorithm was used to filter and reduce the noise of the 3D texture information and the pavement texture information was performed three-dimensional reconstruction and filtered to reduce noise. Then, the two-dimensional texture signal is decomposed by the complementary ensemble empirical mode decomposition (CEEMD) algorithm to obtain the intrinsic mode function IMFs. According to the correlation between each IMFs and the original signal, the IMF with the highest correlation is Hilbert transformed to obtain the instantaneous frequency and instantaneous amplitude. Finally, the maximum correlation coefficient Rcm is proposed, and Rcm is used as an index to characterize the anti-sliding performance. The experimental results show that the correlation coefficients of Rcm and pavement friction coefficient is above 0.8.Rcm can be used to good characterize the anti-skid performance of the pavement.

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历史
  • 收稿日期:2020-07-24
  • 最后修改日期:2021-03-04
  • 录用日期:2021-03-05
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