Application of Semi-analytical Method in Transient Thermal Field of Pavement Structures
The daily temperature change of a pavement structure has an important impact on its crack production and propagation. First of all, a one-dimensional transient mathematical model of heat conduction and a heat convection boundary condition that can take solar radiation and ground radiation into account were established according to the characters of the pavement structure and heat conduction. Secondly all the computational formulae were deduced for the above model utilizing SAM. Finally, the hourly temperature field of a typical pavement structure was calculated using ANSYS and SAM respectively. Results show that SAM solutions at different depths are in good line with ANSYS solutions. Therefore, SAM is an easyprogrammed, fast and high precise method, and is deserved to be popular. In addition, the daily temperature changes at different depths were discussed, and some suggestions were provided for the thermal crack control and prevention of the structure.
Pavement engineering Thermal field Semi-analytical method (SAM) Pavement structure
Fu Liang Mei Gui Ling Li
Institute of Mechanics, Jiaxing University, Jiaxing, 314001, Zhejiang, China
国际会议
上海
英文
1289-1294
2011-10-21（万方平台首次上网日期，不代表论文的发表时间）