高速公路技术状况指标相关性分析

Correlation Analysis of Expressway Technical Condition Index

针对沥青路面性能评价指标的多样性,对不同指标间关系进行研究,进而为道路病害产生机理提供判断依据。基于山东某高速公路检测数据,评价该高速公路技术状况,并分析各技术状况评价指标的相关性。结果表明:除抗滑性能外,公路其他试验路段技术状况评定等级为优;路面技术状况指数(PQI)与路面损坏状况指数(PCI)高度线性正相关;PCI与路面抗滑性能指数(SRI)显著线性负相关;SRI与路面结构强度指数(PSSI)显著线性负相关。结合性能状况及相关性分析,发现病害发展其因果性与路面性能之间没有必然联系,需考虑实际道路状况进行病害机理分析。

According to the diversity of performance evaluation indexes for asphalt pavement,the relationship among different indexes is studied,and then provide a judgment basis for the production mechanism of road diseases.Based on the detection data of an expressway in Shandong,the technical condition of the expressway is evaluated,and the correlation among the evaluation indexes of each technical condition is analyzed.The results show that,in addition to the anti-skid performance,the technical conditions of other test sections of the expressway is rated as excellent;Pavement Maintenance Quality Index(PQI)is highly linearly correlated with Pavement Surface Condition Index(PCI);PCI has a significant linear negative correlation with Pavement Skidding Resistance Index(SRI);SRI has a significant linear negative correlation with the Pavement Structural Strength Index(PSSI).Combined with the analysis of performance status and correlation,it is found that there is no necessary connection between the correlation of the causal performance of disease development,and the actual road conditions need to be considered for disease cause analysis.