摘要
路面结构持续经受着各种环境因素的综合作用,这种作用的结果集中体现为路面温度场的复杂分布。深入地研究了环境因素对路面温度场的影响机制和路面温度场的分布规律后发现,气温和太阳辐射强度是影响沥青路面温度场的主要因素,二者对沥青路面温度场的影响具有累积性和滞后性的特点。通过对我国多个地区路面温度实测数据和气象资料进行回归分析,建立了以气温、太阳辐射强度和路面深度为主要输入参数的沥青路面温度场预估模型。
Thermal environmental conditions, to which asphalt pavements are continuously exposed, determine the complicated distribution pattern of pavement temperature field. The influence mechanism of environmental conditions on temperature field in asphalt pavement and the distribution pattern of pavement temperature field are analyzed. It is suggested that air temper-a-ture and solar radiation are principal factors affecting the pavement temperature, which are characteristics of hysteresis and accumulation. Through regression analysis between the measured pavement temperature data and meteorological data in several regions, a model to predict pavement temperature field is developed. The main inputs of the prediction model are air tempera-ture, solar radiation intensity and depth.
出处
《公路交通科技》
CAS
CSCD
北大核心
2006年第8期18-21,共4页
Journal of Highway and Transportation Research and Development
基金
国家杰出青年基金资助项目(50325825)
关键词
沥青路面
温度场
分布规律
预估模型
asphalt pavement
temperature field
distribution pattern
prediction model
