Numerical Analysis on Thermal and Stress Coupling of Soil Subgrade

Abstract:

This paper focuses on the situation of stress, strain and displacement of subgrade under the action of temperature and load. Carry out numerical simulation for strain problem of normal subgrade plane and compare the numerical results of stress field and displacement field to the analysis results obtained from predecessor, we can find that the distribution of every value is in conformity to its variation trend. The variation of stress and displacement shall be most violent at the top surface of subgrade, thus the effect of temperature and load on stress and displacement will decrease as the depth increases. Moreover, the capacity of calculation and visualization for program is developed greatly, which can supply beneficial assistance to engineering design and appliance.

• Periodical: Applied Mechanics and Materials (Volumes 29-32)
• Pages: 107-111
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.29-32.107
• Online since: August 2010
• Authors: Zhi Wu Zhu, Jian Guo Ning
• Keywords: Displacement, Numerical Analysis, Strain, Stress, Temperature

References

[1] P. Gary, W. Jason, A model for freeze-thaw cycling of the South Pole Station exterior sheathing, Cold Reions Sciences and Technology, vol 52, 2008, pp.254-261.

DOI: 10.1016/j.coldregions.2007.05.007

[2] J. Konrad, C. Duquennoi, A model for water transport and ice lensing in freezing soils, Water Resources Research, vol 29, 1993, pp.3109-3124.

DOI: 10.1029/93wr00773

[3] I. Masters, W.K. Pao, R.W. Lewis, Coupling temperature to a double-porosity model of deformable porous media, International Journal for Numerical Methods in Engineering, vol 49, 2000, pp.421-438.

DOI: 10.1002/1097-0207(20000930)49:3<421::aid-nme48>3.0.co;2-6

[4] B. Su, N. Li, X.J. Quan, The numerical study on the ventilated embankment in permafrost regions in Qinghai-Tibet railway, Cold Reions Sciences and Technology, vol 38, 2004, pp.229-238.

DOI: 10.1016/j.coldregions.2003.11.003

[5] M. Rai, J.C. Roegiers, Fluid flow and heat flow in deformable fractured porous media, International Journal of Engineering Science, vol 32, 1994, pp.1615-1633.

DOI: 10.1016/0020-7225(94)90169-4

[6] M.Y. Zhang, Y.M. Lai, Influence of boundary conditions on the cooling effect of crushed-rock embankment in permafrost regions of Qinghai-Tibetan Plateau, Cold Reions Sciences and Technology, vol 44, 2006, pp.225-239.

DOI: 10.1016/j.coldregions.2005.12.002

[7] B. Dempsey, A mathematical model for predicting coupled heat and water movement in unsaturated soil, Int. J. for Numerical and Analytical Methods in Geomechanics, vol 2, 1978, pp.19-34.

DOI: 10.1002/nag.1610020103

[8] Foriero A, Ladaryi B, Dallimore R, et al. Modelling of deep seated hill slope creep in permafrost, Can Geotech J., vol 35, 1998, pp.560-578.

DOI: 10.1139/t98-024