路面覆盖效应下路基温度场影响因素及分布规律的研究  

Study on Factors Affecting Temperature Field of Subgrade under Pavement Coverage Effect and Its Distribution Law

作　　者：马胜明 冉武平[1] 余雄飞[1] 

机构地区：[1]新疆大学建筑工程学院,乌鲁木齐830047

出　　处：《路基工程》2016年第4期23-26,共4页Subgrade Engineering

基　　金：基于路面覆盖效应的强蒸发地区路基湿度预估和强度衰变机理研究(51368058);道路与交通工程教育部重点实验室开放课题(K201309)

摘　　要：为准确掌握路面覆盖效应下路基温度场的分布特性及变化规律,分析了强蒸发地区的路基温度场影响因素,以强蒸发地区路基温度场一年多的跟踪观测数据为基础,开展了强蒸发地区路面覆盖效应下路基温度场分布规律的研究。结果表明:路基不同深度温度变化存在相对滞后性;大气温度对路基温度场影响深度≤90 cm,且在该深度范围内呈非线性传递;路面覆盖效应导致温度在路面底部聚集。To understand the distribution features and the change law of temperature field of subgrade under pavement coverage effect, this paper analyzed the factors affecting the temperature field of subgrade in the regions of strong evaporation and, on the basis of the observations there for more than one year, explored the distribution law of this temperature field. The result shows that there exists relative lag in temperature variation at different depth of subgrade; the effect of air temperature on the temperature field of subgrade is not more than 90 era, and transferred nonlinearly in the range of this depth; the pavement coverage effect will lead to aggregation of temperature at the bottom of the pavement.

关 键 词：路基 路面覆盖效应 温度场 影响因素 分布规律 

分 类 号：U416.1[交通运输工程—道路与铁道工程]