全厚式沥青路面温度场预估模型

对沥青层厚大于30 cm的全厚式沥青路面的温度场进行分析。基于气温和太阳曝辐量影响的累积性特点,对我国4个地区路面温度实测数据和气象数据进行回归分析,并建立以气温、太阳曝辐量、路面深度为主要参数的不同地区沥青路面温度场预估模型。分析不同地区预估模型产生差异的原因,并引入历年的月平均气温作为地区修正系数,建立适用于各个地区的全厚式沥青路面温度场预估模型。结果表明,该预估模型具有较强的适应性和较高的预测精度。

Temperature Field Prediction Model for Thick Asphalt Layer

The temperature field of asphalt pavement with thick asphalt layer (>30 cm) was analyzed. Based on the cumulative effect of air temperature and solar radiation on pavement temperature, a regression analysis was conducted on the measured pavement temperature from four selected test sites and the obtained meteorological data. The prediction models for different sites were determined as a function of depth, average air temperature and total solar radiation. Then, the cause for the difference between the models at each site was analyzed, and the historical mean monthly air temperatures were incorporated into the model. The model can be applied to the pavement temperature prediction in different areas. The results show that the model has high applicability and high accuracy.