Scientific journal
Scientific Review. Technical science
ISSN 2500-0799
ПИ №ФС77-57440

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NUMERICAL MODELING THE FREEZING AND THAWING PROCESS OF ROADBED CONSTRACTION ON THE PERMAFROST SOILS

Kudriavtcev S.A. 1 Kazharskiy A.V. 1
1 Far Eastern State transport University
The numerical thermotechnical calculations allows to predict and model possible changes of the top permafrost boundary under the actual soil condition as well as constantly growing average annual air temperatures that produce a negative effect on the permafrost. The goal of the numerical thermotechnical calculations is to value the efficiency of measures oriented to provide stable railway subgrade utilisation on the permafrost soils. Considering thermal and moisture fields influence on the subgrade basis was determined the stress and strain state of therailway roadbed constraction during thawing period. Determination of heat and moisture fields was based on water to ice phase transition.