全厚式沥青路面结构温度场全年变化规律研究  

Study on the year-round variation of temperature field of full depth asphalt pavement

作　　者：商淑杰 张晓萌 徐全鹏 陈婷婷 徐希忠 SHANG Shujie;ZHANG Xiaomeng;XU Quanpeng;CHEN Tingting;XU Xizhong(Shandong High-speed Infrastructure Construction Co.,Ltd.,Shandong Jinan 250014 China;Shandong Transportation Institute,Shandong Jinan 250031 China)

机构地区：[1]山东高速基础设施建设有限公司,山东济南250014 [2]山东省交通科学研究院,山东济南250031

出　　处：《山东交通科技》2023年第3期5-9,18,共6页

基　　金：山东省自然科学基金项目,项目名称:基于沥青路面应变检测的碳纳米管低密度聚乙烯改性沥青混合料压阻特性规律与机理,项目编号:R2020QE271。

摘　　要：为了掌握全厚式沥青路面结构温度场的梯度变化规律,更好地指导全厚式沥青路面结构设计,采用温度传感器实时采集的方法,对总厚度42 cm的全厚式沥青路面结构进行了全年每0.5 h的分层温度采集,分析了全厚式沥青路面结构年、月和日温度场的分布。结果表明:全厚式沥青路面结构存在显著的温度梯度,距离路表越近温度波动越明显,路面最高温度为6月,可达60.5℃,最低温度为1月,温度为-22.2℃;全结构层的年最低温度出现在1月,最高温度分别出现在6月或7月;温度的年分布呈双驼峰曲线;随着路面结构深度增加,结构层温度的波动幅度减小,温度变化表现更稳定;温度随深度出现明显的滞后现象,且深层位置温度更加稳定。In order to obtain the gradient variation law of the temperature field of the full depth asphalt pavement structure and guide the design of the full depth asphalt pavement structure better,the real-time acquisition method of temperature sensor was used to collect the layered temperature every 0.5 h for the total thickness of 42 cm asphalt pavement structure throughout the year,and the annual,monthly and daily temperature field distribution of the full depth asphalt pavement structure was analyzed.The results show that there is a significant temperature gradient in the full depth asphalt pavement structure,and the temperature fluctuation is more obvious the closer the pavement is to the surface.The highest temperature of the pavement is in June,reaching 60.5℃,and the lowest temperature is in January,reaching-22.2℃.The lowest temperature of the whole structure layer occurs in January,and the highest temperature occurs in June or July.The annual distribution of temperature presents a double hump curve.With the increase of pavement structure depth,the temperature fluctuation amplitude of the structure layer decreases,and the temperature variation becomes more stable.The temperature lags obviously with the depth,and the temperature in the deep layer is more stable.

关 键 词：全厚式沥青路面 温度场 高温 低温 全年 

分 类 号：U416.217[交通运输工程—道路与铁道工程]