Arctic and Antarctica
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Publications of Rozhin Igor Ivanovich
Arctic and Antarctica, 2018-1
Efimov V.M., Rozhin I.I., Popenko F.E., Popenko F.E., Stepanov A.V., Stepanov A.A., Vasil'chuk Y.K. - Arrangement of bored piles in the cryolithozone of central Yakutia pp. 133-141


Abstract: The article deals with the problems of arranging pile foundations on the territory of the Republic of Sakha (Yakutia) using bored piling. This technology, which is not so widespread in the republic, is simpler and more convenient, in contrast to reinforced concrete foundation piles. In the process of hardening concrete during the arrangement of the bored pile, local fission of frozen soil occurs. Therefore, when using bored piles in the cryolithozone, the problem of determining the design temperatures and the time of formation of the stationary soil regime at the base of the entire pile field, which allows full loading of the foundations, becomes especially critical. Field observations of the temperature regime of soils near the bored pile during its arrangement and hydration of concrete were carried out. In the course of the study, data was obtained on the dynamics of the temperature regime of the soil near the bored pile in the process of its arrangement. The data obtained show that stable negative temperatures over the entire depth of the well are observed one month after pouring, during which period the pile attains most of its strength.
Arctic and Antarctica, 2017-4
Efimov V.M., Vasil'chuk Y.K., Rozhin I.I., Popenko F.E., Stepanov A.V. - Modeling of the temperature schedule of the soil foundations with thermal stabilizers in the cryolithozone of the Sakha Republic (Yakutia) pp. 86-97


Abstract: This article examines the issue of numerical modeling of the soil freezing-thaw process for projection of thermal stabilization system of soil building foundations in the cryolithozone of the Sakha Republic (Yakutia). The goal of this work consists in studying the process of formation of the temperature field of the massif of the soils under the effect of thermal stabilizers. Research is conducted on the process of formation of ice wall as the result of thermal exchange of the soil with the thermal stabilizers and external cool air during clearing of the snow cover from the construction site. The main conclusions of the conducted research include the need for development of mathematical models that would account for the mass exchange processes in the zones of effect of the thermal stabilizers with consideration of the conditions of formation of the cryogenic textures in the process of forced freezing of the soils. There is also a need for mathematical explanation of the phenomena of condensation and evaporation of Freon taking place inside the thermal stabilizers.
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