浇注式导电沥青混凝土组合结构热传导效应预估模型  

The Estimation Model of Heat Conduction Effect for Combination Structure with Conductive Gussasphalt Concrete

作　　者：陈谦[1] 王朝辉[1] 樊振通 侯荣国[2] 陈姣[1,3] CHEN Qian;WANG Chaohui;FAN Zhentong;HOU Rongguo;CHEN Jiao(School of Highway,Chang an University,Xi'an 710064;Research Institute of Highway,Ministry of Transport,Beijing 100088;ZHONGJIAOTONGLI Construction Co.,Ltd,Xi'an 710075)

机构地区：[1]长安大学公路学院,西安710064 [2]交通运输部公路科学研究院,北京100088 [3]中交通力建设股份有限公司,西安710075

出　　处：《材料导报》2019年第10期1659-1665,共7页Materials Reports

基　　金：陕西省创新能力支撑计划项目(2017KW-033);天津市交通运输科技发展计划项目(2017A-12);河南省交通运输科技计划项目(2018J8);长安大学中央高校基本科研业务费资助项目(300102219701; 300102219314; 300102218210)~~

摘　　要：为进一步确定浇注式导电沥青混凝土组合结构热传导效应及融雪化冰工作时间,系统研究了浇注式导电沥青混凝土组合结构传导热基本原理,建立了浇注式导电沥青混凝土组合结构上面层热传导效应预估模型,分别实测和预估了不同环境温度、结构层厚度及通电时间等条件下组合结构上面层的表面温度,确定了浇注式导电沥青混凝土融雪化冰工作时间,并采用pearson相关性检验方法,对比分析及验证了浇注式导电沥青混凝土组合结构的热传导效应预估模型的准确性,为浇注式导电沥青混凝土在桥面铺装领域的推广应用奠定基础。结果表明:浇注式导电沥青混凝土组合结构传导热过程是一种瞬态非稳态导热过程,不同环境条件下,组合结构上面层表面温度在初期上升、中期转折、后期下降等三阶段的预估误差分别维持在0.2～0.8℃、0.3～1.2℃和0.7～5.5℃,其融雪化冰工作时间预估误差则维持在16 min左右;不同环境温度、结构层厚度和通电时间等条件下,预估模型得出的组合结构上面层表面温度的预测值与实测值相关系数介于0.974 0～0.989 0之间,相应P值均小于0.01,判定系数R^2介于0.948 7～0.978 1之间,两者为显著相关,拟合优度较高,预估结果较为准确。To determine the heat conduction effect and the snow melting time of combination structure with conductive gussasphalt concrete,the heat conduction principle of combination structure with conductive gussasphalt concrete was studied systematically.The estimation model of heat conduction effect for the upper layer on the combination structure with conductive gussasphalt concrete was established.The surface temperatures on the upper layer of the combination structure were measured and estimated at different ambient temperature,thickness of structure layer and electrified time.The snow melting time of conductive gussasphalt concrete was determined.The accuracy of the estimation model for combination structure with conductive gussasphalt concrete was analyzed and verified with pearson correlation method.It lays a foundation for the popularization and application of conductive gussasphalt concrete in the field of bridge deck pavement.The results show that the heat conduction process of the combination structure with conductive gussasphalt concrete is a heat conduction process with transient and unsteady.At different environment conditions,the surface temperatures on the upper layer of the combination structure can be divided into three stages,such as the initial rise,the mid-term turn,and the later decline.Their estimation errors are maintained at 0.2-0.8℃,0.3-1.2℃and 0.7-5.5℃,respectively.The estimation error of snow melting time is maintained at about 16 min.At different ambient temperature,thickness of structure layer and electrified time,the coefficients(R)between the test values and estimation values calculated of surface temperatures for combination structure with conductive gussasphalt concrete by the estimation model are between 0.974 0 and 0.989 0.The conspicuous level values(P)are less than 0.01 and the judgment coefficients(R 2)are between 0.948 7 and 0.978 1.It means that there is a good correlation between estimation values and test values.That is to say,the estimated result is accurate.

关 键 词：道路材料 浇注式导电沥青混凝土 桥面铺装 预估模型 热传导效应 融雪化冰工作时间 

分 类 号：TB414[一般工业技术] TB332