E3S Web Conf.
Volume 136, 20192019 International Conference on Building Energy Conservation, Thermal Safety and Environmental Pollution Control (ICBTE 2019)
|Number of page(s)||3|
|Section||Urban Public Safety|
|Published online||10 December 2019|
Simulation analysis of temperature field of permafrost roadbed
1 Tianjin Port Engineering Institute Ltd. of CCCC First Harbor Engineering Company Ltd., Tianjin, 30222 China ;
2 Key laboratory of port geotechnical engineering, ministry of communications, PRC Tianjin, 30222 China ;
3 Key laboratory of port geotechnical engineering of Tianjin, Tianjin, 30222 China ;
4 CCCC First Harbor Engineering Company Ltd., Tianjin, 30222 China ;
* Corresponding author’s e-mail: Lee_binbin@163.com
The finite element analysis model of roadbed temperature field in permafrost region is established with finite element software platform. By using this model, the temperature field of roadbed is compared and analysed, and the freezing-thawing depth and variation rule of roadbed are studied. The results showed that the actual freezing depth was 1.8m. With the increase of the climate warming temperature, the temperature field in the roadbed changes slowly, and the temperature at different depths increases. Due to the influence of climate warming, the roadbed was in a complete positive temperature state when the maximum freezing depth appeared after 20 years. The result shown that the time of the roadbed appeared in the maximum freezing depth was earlier, the time of the roadbed in the seasonal freezing area became shorter, and the maximum freezing depth decreased.
© The Authors, published by EDP Sciences, 2019
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