EXPERIMENTAL STUDY OF MODEL PILE FOUNDATIONS IN SEASONALLY FREEZING SOIL GROUND
Аннотации
The bearing capacity and settlement of pile foundation were greatly influenced by the
temperature variations of soil ground around pile foundation. This paper presented a short report about
laboratory static load tests by model precast concrete piles (cross-section 4 × 4 cm and length of 60 cm) in
seasonally freezing soil ground. The depth of frozen soil was 10 cm, temperature -5℃, -10℃, +20℃. There
were many factors influencing on pile foundations, such as ice in the ground, low temperatures and moisture
of the soil. A series of tests of model piles in seasonally freezing soil ground were carried out, the results of
bearing capacity of pile foundations and a settlement were compared. The results of the experiments were
shown in charts. By application of numerical modeling the pile and soil base interaction vertical deformation
in thermal changes of soil ground, the different settlement of piles. Modeling of thermal conditions of soils in
software in accordance with real conditions on the construction site of Kazakhstan, analysis,and comparison
of the obtained results ofthe settlement of pile foundations at low temperatures are presented in the paper.