电热型融雪沥青路面传热特性研究  

Study on heat transfer characteristics of electric heating snow melting asphalt pavement

作　　者：刘状壮[1,2] 张有为 季鹏宇 Ismail Yusuf Abshir 李林[1] 郝亚真 LIU Zhuang-zhuang;ZHANG You-wei;JI Peng-yu;Abshir Ismail Yusuf;LI Lin;HAO Ya-zhen(School of Highway,Chang'an University,Xi'an 710064,China;Key Laboratory of Special Area HighwayEngineering,Ministry of Education,Xi'an 710064,China)

机构地区：[1]长安大学公路学院,西安710064 [2]长安大学特殊地区公路工程教育部重点实验室,西安710064

出　　处：《吉林大学学报（工学版）》2023年第2期523-530,共8页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家重点研发计划项目(2021YFB1600200);陕西省自然科学基金项目(2019JQ-050);西安市科技计划项目(2019114213CXSF020SF030)。

摘　　要：为研究电热型融雪沥青路面传热特性及其影响规律,采用有限元方法建立了二维传热模型,分析了发热系统设计参数(布设间距、埋设深度、输入功率)以及环境因素(风速、环境温度)对路表温度分布和升温速率的影响,并通过试验段实测数据验证模型的准确性和有效性。结果表明:二维传热模型可以很好地预测电热型融雪沥青路面路表温度值,平均最大绝对误差为1.1℃,平均精度为88.1%,最大精度为96.6%;在发热系统设计参数及外界环境等影响因素中,布设间距是影响路表温度均匀性的主要因素,其次是埋设深度;输入功率和环境因素主要影响电热型融雪沥青路面温度升温速率和最大温度值。A two-dimensional heat transfer model was established using the finite element numerical simulation approach to investigate the heat transfer characteristics and its influence law of electric heating snow-melting asphalt pavement. The impact of heating system design parameters(layout spacing, embedding depth, and input power) and environmental parameters(wind speed, ambient temperature) on surface temperature distribution and heating rate of the pavement was investigated, and the accuracy and effectiveness of the model are verified by the measured data of the test section. The results revealed that the two-dimensional heat transfermodel can predict road surface temperature of electrothermal snowmelt asphalt pavement well in an accurate level, with an average maximum absolute error of 1.1 °C, an average accuracy of 88.1%, and a maximum accuracy of 96.6%. Among all the factors, layout spacing is the most important factor affecting the temperature uniformity of the road surface, followed by embedding depth.Input power and environmental factors mainly affect the temperature rising rate and the maximum temperature of electrothermal snowmelt asphalt pavement.

关 键 词：道路工程 融雪路面 数值模拟 传热模型 设计参数 环境因素 

分 类 号：U421.4[交通运输工程—道路与铁道工程]