|

Temperature regime of permafrost soil under the building with pile foundation

Authors: Krylov D.A., Fedotov A.A. Published: 11.09.2013
Published in issue: #3(50)/2013  
DOI:

 
Category: Applied Mathematics and Methods of Mathematical Simulation  
Keywords: heat equation, thermal conductivity, Stefan problem, phase transition, cryolithozone, thermal stabilizer, pile foundation

Freezing the soil of the building foundations is one of means for sustaining the exploitation characteristics of buildings and constructions in the permafrost regions. One of factors determining the strength and stability of buildings and constructions in the cryolithozone is dynamics of temperature regime of their foundations. Thermal influence of the heated building on permafrost leads to thawing of the soil and as a consequence to its settlement. The similar dangerous cryogenic processes may create emergency situation. The mathematical model of temperature field distribution in foundation soils for geotechnical objects with pile foundation in cryolithozone is studied. Three cases are considered: a building without pile foundation, rested directly on the surface of the frozen soil; a building with pile foundation; a building on pile foundation with freezing the foundation soils using the vertical thermal stabilizers.

References

[1] Samarskiy A.A., Vabishchevich P.N. Vychislitel’naya teploperedacha [Computational heat transfer]. Moscow, LIBROKOM Publ., 2009. 784 p.

[2] Patankar S.V. Computation of conduction and duct flow heat transfer. Innovative Research, 1991, 354 p. (Russ. ed.: Patankar S.V. Chislennoe reshenie zadach teploprovodnosti i konvektivnogo teploobmena pri techenii v kanalakh. Moscow, MEIPubl., 2003. 312 p.).

[3] Koronovskiy N.V. Obshchaya geologiya [General geology]. Moscow, "Knizhnyy Dom Universitet" Publ., 2006. 528 p.

[4] RSN 67-87. Inzhenernye izyskaniya dlya stroitel’stva. Sostavlenie prognoza izmeneniy temperaturnogo rezhima vechnomerzlykh gruntov chislennymi metodami. [Engineering surveys for construction. Predicting temperature changes in permafrost by numerical analysis]. Moscow, Gosstroy RSFSR Publ., 1987. 40 p.

[5] SNIP 2.02.04-88. Osnovaniya i fundamenty na vechnomerzlykh gruntakh [Foundations on permafrost]. Moscow, Stroyizdat Publ., 1990. 53 p.

[6] Krylov D.A., Sidnyaev N.I., Fedotov A.A. The integral method in mathematical modeling of temperature fields. Sb. Dokl. 4 Vseross. Molodezhnoy Nauchno-Innovatsionnoy Shk. "Matematika i matematicheskoe modelirovanie" [Proc. 4th All-Russ. Youth Res. Innovation Sch. "Mathematics and mathematical modeling"]. Sarov, SarFTI Publ., 2010, pp. 72-76 (in Russ.).

[7] Krylov D.A. Mathematical simulation of temperature fields considering phase transitions in cryolithic zone. Nauka Obraz. MGTU im. N.E. Baumana. Elektron. Zh. [Sci. Educ. Bauman Moscow State Tech. Univ. Electron. J.], 2012, no. 4 (in Russ.). Available at: http://technomag.edu.ru/doc/354740.html (assessed 28.07.2012).

[8] Khrustalev L.N. Osnovy geotekhniki v kriolitozone [Fundamentals of geotechnical engineering in the cryolithic zone]. Moscow, MGU Publ., 2005. 544 p.

[9] Popov A.P., Milovanov V.I., Zhmulin V.V., Ryabov V.A., Berezhnoy M.A. On the typical technical solutions for foundations on permafrost. Inzh. Geol. [Eng. Geol.]. 2008, no. 3, pp. 22-39 (in Russ.).