摘要
基于统计分析方法,对车辙形成机理及其预估方法进行探讨.通过对不同级配下沥青混合料进行系统的车辙试验,全程采集车辙形成过程中的变形数据,对数据分别采用双对数曲线、半对数曲线和直线3种函数进行统计回归分析.结果表明:不同级配类型的沥青混合料车辙形成具有一致的规律性,其不同时刻下变形占总变形的比例基本上一致,变形稳定后变形占总变形的比例也一致.预估值与实测值对比分析表明:采用3种统计分析方法对车辙形成规律进行分析,精度均较高,其中直线预估方法拟合精度最高,计算简便、直观,便于工程采用.
Based on statistical analysis methods, the paper makes a deep analysis of the developing mechanism and predictive methods of rutting depth. By lab testing with different composition gradations of asphalt mixtures, the whole formation dates of rutting depth were carefully collected. According to the dates, three different regression curves, such as half logarithmic curve, dual logarithmic curve and linear, were adopted. Results show that the asphalt mixtures with different gradations have the same deformation regularity and the ratio is the same between the deformation at different times and the total deformation. The comparison between predictive values and measured values shows that the three curve predictive regression methods are all of high precision; among them, linear is the highest, it is easy and convenient to use for engineering purposes.
出处
《中南林学院学报》
CSCD
北大核心
2006年第6期65-70,共6页
Journal of Central South Forestry University
基金
交通部国家交通西部建设科技项目(2004-318-000-02)
中南林业科技大学青年基金项目(101-0708)
引进人才基金项目(101-0631)
关键词
结构工程
沥青混合料
车辙
回归曲线
预估方法
structure engineering
asphalt mixture
rutting
regression curves
predictive methods
