Finite Element Analysis for Refrozen Process of Bored Pile in Permafrost Region

Abstract:

The commercially available finite element program ANSYS was used to model the refrozen process of the bored pile. The effects of the refrozen process by casting temperature of concrete, heat of concrete hydration and air convention were analyzed. To estimate the time when the bearing capacity of the bored pile is formed, the finish time of refrozen process was determined by modeling the whole refrozen process of the bored pile. The calculated results are in good agreement with experimental data. The analysis shows that the refrozen process is related with the casting temperature of concrete. The higher the casting temperature is, the more time the refrozen process takes.

• Periodical: Advanced Materials Research (Volumes 243-249)
• Pages: 1655-1658
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.243-249.1655
• Online since: May 2011
• Authors: Qing Bo Wang, Yan Min Jia, Dong Po He
• Keywords: Bored Pile, Hydration Heat, Permafrost, Refrozen Process

References

[1] G.L. Li: Journal of Railway Science Vol. 2 (1980), p.83

[2] U.S. Army Cold Regions Research Engineering Laboratory: The Design and Construction of Foundation in Deep Seasonally Frozen Soil and Permafrost Region.

[3] D. Li: Journal of Xi'an University of Arch. and Tech. Vol. 31 (1999), p.3

[4] L.S. Gong: Practical Manual of Concrete (China Architecture Industrial Publishing Company, China 1995).

[5] Design Standards of Architectural Foundation in Frozen Soil Region (China Architecture Industrial Publishing Company, China 1998).

[6] J.S. Liu: Journal of China Coal Science Vol. 127 (2002), p.5

[7] ANSYS Thermal Analysis Guide, Release 5.7, Second Edition. SAS IP, Inc. 1997.