沥青路面路表温度预估模型研究  

Prediction Model of Surface Temperature of Asphalt Pavement

作　　者：庄传仪[1,2] 王林 申爱琴[1] 付建村 

机构地区：[1]长安大学特殊地区公路工程教育部重点实验室,陕西西安710064 [2]高速公路养护技术交通行业重点实验室,山东济南250031

出　　处：《公路交通科技》2010年第3期39-43,48,共6页Journal of Highway and Transportation Research and Development

基　　金：交通部联合攻关项目(2005353341200);山东省交通科技计划项目(2005Y001)

摘　　要：以山东省永久性沥青路面试验路为研究对象,通过在试验路布设气象观测站,在沥青路面结构不同深度处埋设温度传感器,实测了2007—2008年每1 h的路面温度和气象数据。以距路表面20 mm深度处的路面温度作为路表温度,研究了试验路路表温度的分布规律,对路表温度与气温、太阳辐射强度、降雨之间的相关关系进行了计算分析。考虑到降雨对路面材料热学传导参数的影响,分别研究了雨天和晴天(或阴天)两种天气情况下沥青路面路表温度与气温的相关关系,建立了基于晴天(或阴天)和雨天时路表温度的预估模型。分析结果表明,沥青路面的最高温度和最低温度均出现在距路表面一定深度范围内,雨天情况下路表温度与气温存在着密切相关性;晴天和阴天时,前1 h的平均气温和前3 h的平均太阳辐射强度可以较为准确地反映路表温度。路面温度实测值和预测值的对比表明,预估模型具有较高的预测精度和实用性。Taken the test road of Shandong perpetual asphalt pavement as research object,weather observation station was set up near the test road and temperature sensors were installed at different depths of the asphalt pavement to measure the hourly climate data in 2007 and 2008.Taken the pavement temperature at 20 mm depth from the surface as the surface temperature of asphalt pavement,distribution pattern of asphalt pavement surface temperature were studied,and the relation of surface temperature with air temperature,solar radiation intensity and rainfall were analyzed.Considering the effect of rainfall on thermal conductivity of asphalt pavement material,the relations between air temperature and surface temperature of asphalt pavement during sunny（or cloudy） and rainy days were researched respectively,and the prediction model of surface temperature based on sunny（or cloudy） and rainy days were established.The results indicate that（1） the maximum temperature and minimum temperature of asphalt pavement occur at a certain depth from the pavement surface;（2） there is a close relation between surface temperature and air temperature when raining;（3） during sunny and cloudy days,the average temperatures before 1 hour and the average solar radiation intensity before 3 hours can more accurately reflect the float of road surface temperature.Comparison between measured and predicted pavement temperatures indicates that the prediction model has excellent accuracy and good applicability.

关 键 词：道路工程 路表温度 预估模型 温变速率 降雨 

分 类 号：U416.217[交通运输工程—道路与铁道工程]