基于病害特征的湿热地区公路沥青路面破损状况评价研究  

Research on pavement surface condition index based on surface damage characteristics of asphalt pavements in hot and humid region

作　　者：吴传海 杨艺 王旺 蔡扬发 杨海明 WU Chuanhai;YANG Yi;WANG Wang;CAI Yangfa;YANG Haiming(Guangdong Hualu Transport Technology Co.,Ltd.,Guangzhou 510420,China;Guangdong Jiaoke Technology R&D Co.,Ltd.,Guangzhou 510550,China)

机构地区：[1]广东华路交通科技有限公司,广东广州510420 [2]广东交科技术研发有限公司,广东广州510550

出　　处：《交通科学与工程》2023年第4期9-16,共8页Journal of Transport Science and Engineering

基　　金：广东省交通集团有限公司项目“基于三维全息技术的路面结构与表面功能数字化养护研究及应用示范”(JT2023YB15);广东省省级科技计划项目(2021B1111610002)。

摘　　要：针对目前规范中的路面损坏状况指数PCI存在部分地区不适用、难以指导养护决策等问题,该研究通过调研广东省公路沥青路面的损坏状况,基于湿热地区公路沥青路面病害特征,提出路面损坏状况综合指数I_(PCI,n),其包括横向裂缝状况指数I_(PCI,t)、纵向裂缝状况指数I_(PCI,l)、坑槽修补状况指数I_(PCI,p)和其余破损状况指数I_(PCI,a);建立基于不同沥青路面基层类型的横向裂缝评价模型和基于不同成因的纵向裂缝评价模型;分项指标权重采用包含动态客观权重和病害属性权重的组合权重,并将这两种权重视为被加权项,采用熵权理论计算组合权重;最后基于实际项目,对比I_(PCI,n)和PCI的评价结果,分析规范指标和I_(PCI,n)推荐养护措施与实际养护措施的差别。研究结果表明:I_(PCI,n)评定结果符合实际路况,其养护方案制定效率更高,针对性更强。To address the issues of inapplicability and difficulty in providing maintenance decisions using the pavement condition index(PCI)in the current specification,this study investigates the damage condition of asphalt pavements on highways in Guangdong Province.Based on the characteristics of the damaged asphalt pavements,several damage condition indices are proposed,including PCI for overall damage(I_(PCI,n))including PCI for transverse cracks(I_(PCI,t)),PCI for longitudinal fissures(I_(PCI,l)),PCI for pothole repair condition(I_(PCI,p)),and other damage condition indices(I_(PCI,a)).Additionally,evaluation models for transverse crack assessment based on different asphalt pavement base types and longitudinal crack assessment based on different causes are established.Sub-index weights are determined using a combination of dynamic objective weights and damage attribute weights.These two types of weights are then treated as weighted terms and computed using entropy weight theory.Finally,based on actual projects,a comparison is made between I_(PCI,n) and PCI evaluation results.The differences between the recommended maintenance measures of I_(PCI,n) and the actual maintenance measures are analyzed against the specification indices.This research demonstrates that the assessment results of I_(PCI,n) align with the actual road conditions,resulting in higher efficiency and greater specificity in formulating maintenance plans.

关 键 词：路面损坏状况综合指数 横向裂缝状况指数 纵向裂缝状况指数 湿热地区 组合权重 养护决策 

分 类 号：U418.6[交通运输工程—道路与铁道工程]