半刚性基层沥青混凝土路面温度场有限元分析

摘要

通过对基层温度的长期观测,获得了温度随时间的变化规律和温度随深度的变化曲线.利用ANSYS有限元软件对半刚性基层沥青路面计算所求出的数值解与实际值进行对比分析,发现其能够很好地反映路面结构的温度分布状况；路面表面温度同基层顶面最高或最低温度的出现存在时间差,路面到达一定深度范围内,温度随时间变化基本保持一致.%Through long-term observation on base temperature, the law of temperature changing with time and the curve of temperature changing with depth are obtained. With ANSYS finite element software, the numerical solution calculated against semi-rigid base asphalt concrete pavement is compared to the value measured, and then found to be able to reflect the temperature distribution of the pavement structure well. The temperature at the pavement surface goes out of accord with the occurrence of the maximum and minimum temperature at the base top and, within certain depth range of the pavement, the change of temperature with time shall be in consistency.