Prediction of Friction Degradation in Highways with Linear Mixed Models

Coatings

AnaMaria A. C. Rocha¹  Susana Faria²  Adriana Santos³  ElisabeteF. Freitas⁴  JoelR. M. Oliveira⁴ 

[1] ALGORITMI, Department of Production and Systems Engineering, University of Minho, 4800-058 Guimarães, Portugal;CBMA, Department of Mathematics, University of Minho, 4800-058 Guimarães, Portugal;CTAC, Doctoral Program in Civil Engineering, Department of Civil Engineering, University of Minho, 4800-058 Guimarães, Portugal;ISISE, Department of Civil Engineering, University of Minho, 4800-058 Guimarães, Portugal;

关键词: friction;    skid resistance;    pavement;    performance;    degradation;    linear mixed models (LMMs);   

DOI  :  10.3390/coatings11020187

来源: DOAJ

【 摘 要 】

The development of a linear mixed model to describe the degradation of friction on flexible road pavements to be included in pavement management systems is the aim of this study. It also aims at showing that, at the network level, factors such as temperature, rainfall, hypsometry, type of layer, and geometric alignment features may influence the degradation of friction throughout time. A dataset from six districts of Portugal with 7204 sections was made available by the Ascendi Concession highway network. Linear mixed models with random effects in the intercept were developed for the two-level and three-level datasets involving time, section and district. While the three-level models are region-specific, the two-level models offer the possibility to be adopted to other areas. For both levels, two approaches were made: One integrating into the model only the variables inherent to traffic and climate conditions and the other including also the factors intrinsic to the highway characteristics. The prediction accuracy of the model was improved when the variables hypsometry, geometrical features, and type of layer were considered. Therefore, accurate predictions for friction evolution throughout time are available to assist the network manager to optimize the overall level of road safety.

【 授权许可】

Unknown