摘要
纵向裂缝和沉陷在多年冻土区路面病害中占有很大的比例,且大部分属于结构性病害,在一定程度上也反应了路基破坏的严重程度,在路面评价过程中,如果用原有的PCI公式来计算,路面破损程度的评价结果则会被掩盖,因此需要将其分离出来计算其权重。将纵向裂缝和沉陷从PCI中提取出来作为单独的评价指标,采用主成分分析方法计算各评价指标的权重,客观地反映了冻土区路面病害的严重程度。
Longitudinal cracks and subsidence occupy a large proportion of pavement diseases in permafrost regions,and most of them belongs to structural diseases. To a certain extent,they reflect the damage severity of subgrade. In pavement evaluation,if the PCI formula in Asphalt Pavement Maintenance Code is used to calculate the pavement disease severity,the evaluation results will be concealed,So they need to be separated to calculate their weight. In this paper,longitudinal cracks and subsidence were extracted from PCI as a separate evaluation index,principal component analysis method was used to determine the weights of the evaluation indexes and the severity of the pavement damage was objectively reflected.
出处
《公路工程》
北大核心
2017年第6期107-109,193,共4页
Highway Engineering
基金
陕西省自然科学基础研究计划-青年人才项目(2016JQ5115)
十二五"国家科技支撑计划项目(2014BAG05B07)
中交集团科技研发项目(2015-ZJKJ-PTJS05)
关键词
冻土区
评价指标
主成分分析方法
综合评价
permafrost regions
evaluation index
primary component analysis
evaluation methodotogy
