Numerical Calculation Method and Study for Frost Heave Deformation of Ground Heat Exchanger Pipe

Abstract:

For the frost heave deformation of ground heat exchanger with U-type heat exchanger pipe in subzero condition, a numerical calculation method was proposed by describing constitutive equations and establishing physical model. The finite element simulation study based on ABAQUS code was carried out to explore frost heave deformation behavior of saturated soil and interaction between pipe-soil interfaces ,focuses on the deformation of U-type pipe cause by saturated soil frost heave squeezing under the condition of different cooling rate.The distribution and change law of temperature,displacement, stress and strain on U-type heat exchanger pipe and soil were acquired.

• Periodical: Applied Mechanics and Materials (Volume 455)
• Pages: 325-329
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.455.325
• Online since: November 2013
• Authors: Xiao Lin Zhu, Qing Gao, Ming Yu, You Tang Wang
• Keywords: Deformation, Frost Heave, Ground Heat Exchanger Pipe, Numerical Calculation Method

References

[1] Lenarduzzi Frank J., Cragg Chris B. H: ASHRAE Transactions, Vol. 106 (2000), p.424.

[2] Marita Allan: FY 1997 Progress Report. Brookhaven National Laboratory (1997).

[3] Anna Gabrielsson, Marti Lehtmets: Report No53, Swedish Geotechnical Institute (1997).

[4] Michalowski RL: Cold Regions Science and Technology, Vol. 1 (1993), p.47.

[5] Michalowski RL, Ming Zhu: Numerical and Analytical Methods in Geomechanics, Vol. 30 (2006), p.703.

[6] Zhu Xiangrong, Wang Jinchang: Journal of Rock and Soil Mechanics, Vol. 25 (2004), p.144.