柔性基层沥青路面温度场的预估模型  

Prediction Model on Temperature Field in Flexible Asphalt Pavement

作　　者：李浩天[1] 贾渝[1] 白琦峰[2] 

机构地区：[1]江苏省交通科学研究院,南京211112 [2]东南大学交通学院,南京210008

出　　处：《武汉理工大学学报》2010年第24期84-89,共6页Journal of Wuhan University of Technology

基　　金：江苏省科技项目国际技术合作项目(BZ2007025)

摘　　要：以实测气象数据和路面温度场为回归分析的研究对象,建立了柔性基层沥青路面温度场预估模型。采用分层统计方法,克服了预估模型在路面较深处精度降低的困难。充分考察了气温、太阳辐射对路面不同层位的温度场的影响的滞后时间。模型中引入了温度随深度增加的衰减因子。结果表明,气温、太阳辐射对路面不同层位表现出不同的滞后时间,各层模型引入的影响因素应不一。引入温度衰减因子后,通过分层统计方法建立的各层温度场模型均呈现较高精度。Taking measured meteorological data and pavement field temperature as research subject of regression analysis,prediction models on flexible pavement temperature field are established.Aim to solve the problems that the precision of prediction models decrease as the depth pavement increases,a layer-statistical method is used.Air temperature and solar radiation,which are two affected factors to pavement temperature field of different layers,are hysteresis,and this property should be considered thoroughly.A depth attenuation factor is introduced into the model.It is indicated that for different layers,the hysteresis property are different,different affected factors are introduced into different layer models.With the introduction of depth attenuation factor,used the method of layer-statistical,the prediction models get a excellent precision.

关 键 词：道路工程 沥青路面 柔性基层 温度场 预估模型 分层统计 衰减因子 

分 类 号：U416.2[交通运输工程—道路与铁道工程]