Road Temperature Distribution Of Asphalt Pavement Research On Central Jiangxi Province

Asphalt pavement exposed to the outside environment, subject to the continuingimpact of the natural environment, causing the temperature of the pavement structurechanging, due to the asphalt pavement, road and pavement performance is closelyrelated with the temperature itself, if accurately estimate the temperature of the asphaltpavement temperature field distribution, can effectively prevent damage to the roadearly, improving pavement quality, but also conducive to the structural design ofasphalt pavement scientific. For this reason, the temperature distribution within theasphalt pavement structure analysis has important application value.This article affected by meteorological elements starting from the asphaltpavement temperature, heat conduction through the basic theory, asphalt pavementtemperature prediction model; combined in Jiangxi meteorological data, estimated thetemperature distribution of asphalt pavement, plotted in Jiangxi region temperaturedistribution and temperature of asphalt pavement along structural variation. Specificresearch results are as follows:â‘ Jiangxi region in1971-2000to30years of meteorological data statisticalanalysis, the air temperature, solar radiation, monthly average wind speed, sunshinehours, rainfall and other meteorological elements, the changes of day and thecorresponding formulas; Thermophysical parameters of pavement material analysisstudies to determine the range of different smaller thermal physical parameters;â‘¡Meteorological, basic heat transfer theory, finite difference method, a numericalmodel of unsteady temperature asphalt pavement structure within a one-dimensional;And using MATLAB programming language, get a visual temperature predictionmodel; Different depth and asphalt pavement, the temperature measured at differenttime value comparison analysis shows that the model can accurately estimate thetemperature distribution of the road;â‘¢Combined in Jiangxi meteorological element data, calculated using thetemperature prediction model layers of asphalt pavement temperature to thetemperature of the asphalt pavement1cm distribution data, to map out the asphaltpavement temperature distribution in Jiangxi region; Calculated using the model whilethe high temperature period, when the room temperature at different times within a dayof asphalt pavement temperature distribution along the depth cloudy, within one year of the calculated temperature statistics pavement layers, asphalt pavement temperaturewas plotted along the depth distribution;â‘£Thermal physical parameters of pavement materials different values,differentvalues of the road surface radiation absorption rates and distribution of rainfall onasphalt pavement temperature analysis.This paper studies the distribution of the temperature of the asphalt pavementafter the conclusion of the pavement structure similar experiment, develop and providenew ideas and effective basic data.