Results of experimental research and numerical modeling of plane-parallel freezing of a soil sample in an experimental test-bed

Makarov, Aleksei; Kraev, Alexey; Tverdokhleb, S. V.; Shankhoev, Zurab

doi:10.15862/09ts417

Cited by 3 publications

(4 citation statements)

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“…According to VSN 84-89, the calculated period of negative temperatures at a scale of 1: 1 is 5032.80 hours, the calculated period of positive temperatures at a scale of 1: 1 is 3727.20 hours. As a result, the value of the cold period for the experiment in laboratory conditions was 5.59 h, the value of the warm period is 4.14 h [3]. The general view of the freezer is shown in Figure 3.…”

Section: Methodsmentioning

confidence: 93%

“…A general view of the test tray is shown in Figure 2. When modeling the subgrade and the base of the highway on a scale of 1:30 [3], a homogeneous water-saturated loam with a disturbed structure was used.…”

Section: Methodsmentioning

confidence: 99%

“…In the freezer, the temperature and humidity stabilization of the base was preliminarily performed by cyclic freezing and thawing [3]. On a pre-stabilized foundation with a thickness of h = 20 cm, a subgrade was erected from cooled soil.…”

Section: Methodsmentioning

confidence: 99%

“…To simulate difficult climatic conditions close to the object: "Construction of the highway Surgut -Salekhard, section of Novy Urengoy -Nadym. temperatures of a full-scale object [3]. The duration of the warm and cold periods was taken according to the method of V.D.…”

Section: Methodsmentioning

confidence: 99%

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Modeling the Deformed State of the Roadway on Permafrost

2020

IJETER

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For economic efficiency, the authors offer to conduct an experimental study of the deformed state of the sub-grade model on permafrost soils in the laboratory environment in a closed system (without a water flow) applying a geometric scale value of M 1:30 and time scale of M 1:900. The description of the research flume, which allows simulating not only the deformed state of the linear structure, but also the temperature regime, is given. During the study, the defects were photo-recorded and the deformations of the structure were measured. Distribution isolines of vertical movements while freezing-thawing were built in the software system "Python", a thermogram of temperature changes in the body of the roadbed and the base of the road is given. The main conclusions of the research are formulated.

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Section: Methodsmentioning

confidence: 93%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Modeling the Deformed State of the Roadway on Permafrost

2020

IJETER

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Modeling the deformed state of the roadway on permafrost

Kraev

Shankhoev

2019

Russian journal of transport engineering

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For economic efficiency, the authors offer to conduct an experimental study of the deformed state of thesub-grade model on permafrost soils in the laboratory environment in a closed system (without a water flow) applying a geometric scale value of M 1:30 and time scale of M 1:900. The description of the research flume, which allows simulating not only the deformed state of the linear structure, but also the temperature regime, is given. During the study, the defects were photo-recorded and the deformations of the structure were measured. Distribution isolines of vertical movements while freezing-thawing were built in the software system «Python», a thermogram of temperature changes in the body of the roadbed and the base of the road is given. The main conclusions of the research are formulated.

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Structural-technological solutions for the construction of roads on permafrost soils

Makarov

Kraev

Shankhoev

2018

Russian journal of transport engineering

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In this article, the authors briefly reviewed the problem of building roads on permafrost soils, according to the first engineering principle. The probable causes, affecting the thermal regime of the frozen soil at the base of the road, are also considered. In order to stabilize the road structure on permafrost soils, the team of authors of this article proposed 3 structural-technological solutions for the construction of roads, depending on the moisture levels of the upper soil mass, calculated for geotechnical and temperature-humidity conditions typical for the Yamalo-Nenets Autonomous district. The scheme, description and assessment of the effectiveness of each proposed structural-technological solution is given. Efficiency of the assessment is based on a comparison of the numerical modeling results of the water-thermal mode of mound with the proposed structural-technological solutions and ground embankments of roads on permafrost. The results of the numerical modeling of road embankments on permafrost soils are presented. The main conclusions of the research are formulated.

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Results of experimental research and numerical modeling of plane-parallel freezing of a soil sample in an experimental test-bed

Cited by 3 publications

References 0 publications

Modeling the Deformed State of the Roadway on Permafrost

Modeling the Deformed State of the Roadway on Permafrost

Modeling the deformed state of the roadway on permafrost

Structural-technological solutions for the construction of roads on permafrost soils

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