季节性冻土地区沥青路面温度场的预估模型

为了准确掌握沥青路面温度场的分布特点和变化规律,在季节性冻土地区观测某段道路实测温度两年多时间,分析全年路段的温度变化情况,以及夏季和冬季全天具体的实测温度;并在此基础上,结合气象资料,分析温度场差异的原因以及影响因素。对沥青路面温度场进行研究,采取回归分析的方法,引入气温、太阳辐射等因素,建立路表的预估模型。考虑道路不同深度处的温度,引入深度衰减因子;并考虑时间的影响,建立全年日平均温度模型。将实验数据与预估数据比较表明:该模型具有较好的精确性与实用性。

Prediction model of temperature field of asphalt pavement in seasonal frozen soil region

In order to accurately grasp the distribution characteristics and variation law of the temperature field of asphalt pavement, observed a certain road temperature in a seasonal frozen soil area for more than two years, and analysed the temperature changes in the whole year, as well as the specific summer and winter temperature of the whole day, on the basis of that, combined with meteorological data, and analysed the reasons for the difference in temperature field and its influencing factors.SIntroduced the factors such as temperature, solar radiation and so on,Sresearch on the temperature field of asphalt pavement, and the method of regression analysis was adopted to establish an appropriate prediction mode. According to the temperature at different depth of the road, the depth attenuation factor is introduced. And taking into account the effects of time to establish annual average temperature model. The comparison of the experimental values and the predicted values shows that the model has good accuracy and practicability.