# [1]顾兴宇,倪富健,董侨.AC+CRCP复合式路面温度场有限元分析[J].东南大学学报(自然科学版),2006,36(5):805-809.[doi:10.3969/j.issn.1001-0505.2006.05.025] 　Gu Xingyu,Ni Fujian,Dong Qiao.Thermal analysis for AC+CRCP composite pavement using finite element methods[J].Journal of Southeast University (Natural Science Edition),2006,36(5):805-809.[doi:10.3969/j.issn.1001-0505.2006.05.025] 点击复制 AC+CRCP复合式路面温度场有限元分析() 分享到： var jiathis_config = { data_track_clickback: true };

36

2006年第5期

805-809

2006-09-20

## 文章信息/Info

Title:
Thermal analysis for AC+CRCP composite pavement using finite element methods

Author(s):
College of Transportation, Southeast University, Nanjing 210096, China

Keywords:

U416.216.2
DOI:
10.3969/j.issn.1001-0505.2006.05.025

Abstract:
Based on the heat conduction theory, the transient thermal field of the AC(asphalt concrete)+CRCP(continuous reinforced concrete pavement)composite pavement is analyzed by using the finite element method(FEM).Three kinds of heat conduction between the pavement and its surroundings are considered, including solar radiation, air heat flow and the radiation between air and pavement. The developed FEM simulation model can predict temperature distributions at different times of various pavement layers accurately with an average absolute error of 2.0 ℃. The result shows obvious regularities: as the position deepens, the range of the temperature, thermal gradient and temperature changing velocity will decrease and the phases will be deferred; the relationship between temperature differences and the depth within a day can be described by an exponential function. The pavement thermal field was studied by using the developed model, and some conclusions are attained as follows. The surface temperature is mainly determined by the heat transfer between the pavement surface and the environment. The absorbency of surface pavement material for solar radiation is the main factor that leads to the difference between temperatures of different kind of pavement surface. Critical thickness of AC overlay is determined by the heat conductivity of asphalt mixture.

## 参考文献/References:

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