沥青路面面层温度分布规律  

Distribution Law of Asphalt Pavement Temperature

作　　者：马正军[1] 谈至明[1] 钱晨[2] 

机构地区：[1]同济大学道路与交通工程教育部重点实验室,上海201804 [2]上海市政工程设计研究总院(集团)有限公司,上海200092

出　　处：《中国公路学报》2014年第4期9-15,共7页China Journal of Highway and Transport

基　　金：交通运输部西部交通建设科技项目(2008 318 000 99)

摘　　要：为给沥青路面设计与施工提供参考,基于路面温度实测数据利用数理统计方法,对沥青路面面层温度分布规律进行了深入研究,利用广州、宁波、大同的实测数据分析了沥青面层层均温度的年分布规律;提出表征路表温度分布密度曲线形态的3个特征值(路表温度众值、路表高温率和路表温度变幅);研究了标准材料热力参数下沥青路表温度年均值、年标准差与气象、地理参数的关系;利用739个地区数据绘制了标准材料热力参数下全国沥青路表温度年均值等值图和年标准差等值图,提出了在非标准材料热力参数情况下的修正式。研究结果表明:地区差异对沥青面层层均温度的年分布密度曲线形态影响显著,但面层厚度对其影响较小,可忽略不计;对应于年内不同层均温度的温度梯度均值随着层均温度的增大而增大,其变化可分为缓慢增大、平缓过渡和急剧增大3个阶段,面层厚度对其影响亦较小,可忽略不计;中国沥青路面路表温度的年分布密度曲线形态可分双峰、单峰、过渡形态3种,呈双峰分布形态的代表区域为华北中南部、华中、华东大部、西北东部和西南部分地区,单峰分布形态仅局限于华南沿海地区,过渡形态的代表区域为东北、华北北部、华东南部、西北大部和部分西南地区。In order to distribution law of as pr ph ovide reference for design and construction of pavement, research on the alt pavement temperature was made using mathematical statistics method based on field-collected data. The data from Guangzhou, Ningbo and Datong were used for the analysis of the distribution law of mean layer temperature of asphalt pavement. Three eigenvalues （predominant value, high temperature rate and range of surface temperature） to depict patterns of surface temperature of pavement were proposed. The relationships between annual mean surface temperature, annual standard deviation and meteorological, geographic parameters were obtained. Using the data of 739 areas, with standard thermal parameters of materials, the contour plots for annual mean surface temperature of asphalt pavement and standard deviation were presented, and correction parameter were proposed. The formulas under condition of non-standard of material thermal results show that regional difference has significant impact on the frequency spectrum distribution of mean layer temperature of asphalt pavement, whereas layer thickness has so little impact that it can be ignored. Mean temperature gradient corresponding to mean layer temperature increases with the rise of mean layer temperature. The process of change falls into three stages., slow increase stage, gentle transition stage and rapid increase stage. The influence of layer thickness on mean temperature gradient is little and can also be ignored. Frequency spectrum distribution of surface temperature of asphalt pavement in China falls into three types, bimodal, unimodal and transitionary model. Bimoda[ form is most widely distributed in the middle and south of North China, Central China, most part of East China, eastern part of Northwest China and some places of Southwest China~ unimodal form is distributed in South China along the sea and transitionary model is distributed in Northeast China, north of North China, southern part of East China, most part of Northwest China and

关 键 词：道路工程 沥青路面温度分布 统计分析法 路面温度频谱 温度年均值 

分 类 号：U416.217[交通运输工程—道路与铁道工程]