Influence of Route Direction on Thermal Field of Embankments Constructed in High-Altitude Permafrost Area
Publication: Journal of Cold Regions Engineering
Volume 22, Issue 2
Abstract
This paper discusses the effect of route direction, embankment height, and pavement type on the thermal field of embankments built in permafrost regions. A finite-element model (FEM) is adopted to simulate diverse conditions of the embankment. The meteorological data including the solar radiation, air temperature, and wind velocity are used as the boundary conditions for the Qinghai-Tibet Highway. The results obtained from the FEM calculations are found to be in good agreement with the actual measurements on the thermal field. Further, the results show that route direction has great impact on the equilibrium of the thermal field within embankments in permafrost regions. The thermal imbalance is more obvious for embankments in the east–west direction and less in the north–south direction. In addition, the thermal asymmetry is closely related to seasonal variation and it is more pronounced in winter and less in summer.
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Acknowledgments
The research is supported by the funds provided by the Natural Science Foundation Committee (NSFC) of China (No. UNSPECIFIED50178010) and the Key Technological Program for Western Transportation by the State Communications Ministry (No. UNSPECIFIED200231881203).
References
ANSYS Company. (2002). ANSYS user’s manual.
Chinese National Meteorological Bureau. (2003). Collection of ground meteorological data during the recent 30 years in Wudaoliang, Tuo Tuohe and An Duo area, Beijing (in Chinese).
Goering, D. J. (1996). “Air convection embankments for roadway construction in permafrost zones.” Proc., 8th Int. Conf. on Cold Regions Engineering, 1–12.
Ji, G. L., Hou, X. H., Lu, L. Z., and Li, R. (2004). “Characteristics of radiation budget on different underlying surfaces in the arid region.” Acta Energiae Solaris Sinica, 25(1), 37–40 (in Chinese).
Johnson, E. G., and Kinney, T. C. (1988). “Embankment settlement and stability analyses.” Technical council on cold regions engineering monograph, Embankment design and construction in cold regions, E G. Johnson, ed., ASCE, New York, 93–113.
Lai, Y. M., Li, J. J., Niu, F. J., and Yu, W. B. (2003). “Nonlinear thermal analysis for Qinghai-Tibet railway embankments in cold regions.” J. Cold Reg. Eng., 17(4), 171–184.
Lai, Y. M., Zhang, S. J., and Mi, L. (2004). “Effect of climatic warming on the temperature fields of embankments in cold regions and a countermeasure.” Numer. Heat Transfer, Part A, 45(2), 191–210.
Lunardini, V. J. (1978). “Theory on -factors and correlation of data.” Proc., 3rd Int. Conf. on Permafrost, 40–46.
Wang, H. N., and Dou, M. J. (2007) “Design parameters analysis of insulated embankments in Qinghai-Tibet Plateau permafrost region.” J. Cold Reg. Eng., 21(1), 1–18.
Wang, S. L., Niu, F. J., Zhao, L., and Li, S. X. (2003). “The thermal stability of roadbed in permafrost regions along Qinghai-Tibet Highway.” Cold Regions Sci. Technol., 37(1), 25–34.
Wang, T. H., Hu, C. S., Li, N., and Hou, Z. J. (2002). “Numerical analysis of ground temperature in Qinghai-Tibet Plateau.” Sci. China, Ser. E: Technol. Sci., 45(4), 433–443.
Wu, G. C. (1995). Temperature stress analysis of semirigid pavement, Science Press, Beijing.
Xu, X. Z., Wang, J. C., and Zhang, L. X. (2001). Frozen soil physics, Science Press, Beijing.
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© 2008 ASCE.
History
Received: Jun 16, 2005
Accepted: Nov 28, 2007
Published online: Jun 1, 2008
Published in print: Jun 2008
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