实测数据下沥青路面承载力修正温度计算模型  

Modified Temperature Calculation Model of Asphalt Pavement Bearing Capacity Based on Measured Data

作　　者：黎春燕 李彬 蔡金一 纪云涛 LI Chunyan;LI Bin;CAI Jinyi;JI Yuntao(Science and Technology Research Institute of Highway of Yunnan Province,Kunming Yunnan 650051,China;Kunming Construction Engineering Quality Testing Center,Kunming Yunnan 650200,China)

机构地区：[1]云南省公路科学技术研究院,云南昆明650051 [2]昆明市建设工程质量检测中心,云南昆明650200

出　　处：《工程质量》2023年第5期34-40,共7页Construction Quality

摘　　要：为减少温度对客观评价沥青路面承载力的影响,论文在不同结构深度的沥青路面上埋置温度传感器检测路面温度,并采集路表温度及空气温湿度,通过曲线图、灰色关联分析法及回归分析法对采集数据进行分析,研究沥青面层温度的分布情况及影响因素,得出承载力修正温度计算模型。研究表明,大气环境湿度对沥青层温度影响较小,沥青层温度的主要影响因素是沥青层厚、环境温度、路表温度和测试前一段时间的平均温度,其中测试前平均温度的时间段主要与沥青层厚有关,沥青层越厚,影响最大的测试前时间段越长。在此基础上,论文建立了不同深度下沥青路面承载力修正温度的计算模型,通过与实测值进行对比,发现该计算模型性能较好。In order to reduce the influence of temperature on the objective evaluation of asphalt pavement bearing capacity,this paper embedded temperature sensors on asphalt pavement with different structural depths to detect the pavement temperature,and collect the road surface temperature and air temperature and humidity.The collected data were analyzed by curve,grey correlation analysis and regression analysis,and the distribution of asphalt surface temperature and influencing factors were studied.The calculation model of modified temperature of bearing capacity is obtained.The research showed that the asphalt layer temperature was little influenced by atmospheric environmental humidity,and their main influencing factors were the layer thickness,ambient temperature,road surface temperature and the average temperature for a period of time before the test.The time period of average temperature before the test was mainly related to the asphalt layer thickness,the thicker the asphalt layer is,the longer the time period before the test is most affected.On this basis,this paper built the temperature modified calculation model of asphalt pavement bearing capacity at different depths,and comparing with the measured values,it is found that the temperature modified model has better calculation performance.

关 键 词：道路工程 承载力修正温度计算模型 温度监测 回归分析 灰色关联分析 

分 类 号：U416[交通运输工程—道路与铁道工程]