摘要
为选择合理的高速公路沥青路面预防养护措施,需对不同措施的养护效果及路面性能衰变规律进行分析。通过对一般指数模型进行修正,并对近5年的路面性能数据进行拟合的方法,研究了路面性能指标PCI、RQI、RDI的衰变速率。结果表明:超薄磨耗层养护效果最优,微表处最差;3个指标中PCI衰变速率最大,应以修复路面破损病害为主选取养护措施;采用修正指数模型对数据拟合度要大于一般指数模型。可见,修正指数模型可对各指标发展趋势进行简单预测,作为后续养护决策的参考依据。
In order to take reasonable preventive maintenance measures for the asphalt pavement of expressways,it is necessary to analyze the maintenance effects of different measures and the decay law of pavement performance.The decay rates of pavement performance indicators,PCI,RQI and RDI,were studied by modifying the general exponential model and fitting the pavement performance data for the last 5 years.The results showed that the ultra-thin abrasion layer had the optimal maintenance effect,while the micro surface had the worst effect.The decay rate of PCI was the highest,so repairing pavement damages should be the main selection of maintenance measures.The modified exponential model can better fit data than the general exponential model,so,itcan simply predict the development trend of each indicator,and provide reference for subsequent maintenance decisions.
作者
李亚龙
LI Ya-long(Shanxi Transportation Technology Research&Development Co.,Ltd.,Taiyuan,Shanxi 030032,China)
出处
《山西交通科技》
2021年第6期13-17,共5页
Shanxi Science & Technology of Transportation
基金
山西交通控股集团有限公司科技项目(20-JKKJ-27,18-JKKJ-42)。
关键词
沥青路面
路面性能
预防养护
衰变规律
asphalt pavement
pavement performance
preventive maintenance
decay law
