实测沥青路面温度场分布规律的回归分析

Regression Analysis of Actual Measurement of Temperature Field Distribution Rules of Asphalt Pavement

以实际运营中的沥青混凝土道路结构为试验对象,提出了一套完整的道路结构温度场实测方案。根据大量的实测沥青路面温度数据研究了沥青路面温度场的分布规律,并利用回归分析对沥青路面温度场与气温之间的相关关系进行了探讨。考虑到升温阶段和降温阶段气温对沥青路面温度场影响的差异,分别研究了基于升温阶段和降温阶段沥青路面温度与气温的相关关系,并给出了不同温变阶段下任意深度处沥青温度的预估模型。对实测数据与预估数据的比较表明:该模型具有较好的精确性与实用性。

Taking the structure of asphalt concrete pavement in actual running as the test object, a kind of actual measurement project for temperature field pavement structure was put forward. Based on the abundant measured temperature data, distribution rules of asphalt pavement temperature field were studied in detail, and the dependency relations between the air temperature and pavement temperature field were discussed with regression analysis. Considering the effect difference to asphalt pavement temperature field which was applied by temperature rise period and temperature fall period of air, the dependency relations between air temperature and different temperature changing periods were researched respectively and the prediction models on asphalt pavement temperature based on different temperature changing periods were established. The comparison between measured and predicted asphalt pavement temperatures indicates that these models have good applicability and accuracy.