镇江地区沥青路面温度特征值分析

Analysis of Characteristic Value of Temperature of Asphalt Pavement in Zhenjiang Area

沥青混合料是一种对温度非常敏感的材料,研究其温度特征值对建立温度预估模型和路面设计都有重要意义。文中通过记录镇江地区沥青路面面层2007-12～2008-11全年路面温度变化数据,讨论了日路面温度随深度变化的规律,分析了正矩、负矩和热通量等特征值,得到正负矩的变化规律相同,春季路面温度变化幅度最大并且热传递速率最高,以及热通量变化规律等结论。

Asphalt mixture is a very sensitive material on the temperature,the research about the temperature characters of asphalt mixture is very important in modeling temperature prediction and pavement design.In this paper,with temperature variation data of asphalt pavement in Zhenjiang area,we discussed about the pavement temperature variation according to the depth,mainly analyzed the characteristic value of positive temperature amplitude,negative temperature amplitude and heat flux.The analysis shows the variation of pavement temperature and the rate of heat transfer become the most in spring,and we also obtained the conclusion that it has the same regular between positive temperature amplitude and negative temperature amplitude and the evolution of heat flux and so on.