周期性边界条件下路面温度场及影响因素研究

Research on the Temperature Field and Influencing Factors of Pavement under Periodic Boundary Conditions

温度对路面的承载力和使用性能有极其重要的影响,温度超过限定范围造成的路面病害将造成道路性能破坏甚至交通事故,因此研究路面的温度场十分重要。对于周期性边界条件下路面的一维温度场,采用简谐波分别表示气温、太阳辐射建立传热模型,基于拉普拉斯积分变换法推导出温度场的理论解,并研究路面导热系数和比热容对路面温度的影响,为发展热阻式路面、相变沥青路面实现降低路面高温目的提供参考依据。

The temperature has a significant impact on the bearing capacity and performance of the pavement.The pavement diseases caused by temperatures exceeding the specified range will cause damage to pavement performance and even traffic accidents.Therefore,studying the temperature field of pavement is very important.For the one-dimensional temperature field of the pavement under periodic boundary conditions,the simple harmonic wave is used to represent air temperature and solar radiation respectively to establish a heat transfer model.The theoretical solution of the temperature field is derived based on the Laplace integral transformation method.The influence of the thermal conductivity and specific heat capacity of the pavement on the pavement temperature is studied to provide a reference for the development of thermal resistance pavement,and phase change asphalt pavement to reduce the pavement temperature.