NUMERICAL ANALYSIS FOR TEMPERATURE OF CFG PILE GROUP MODEL IN PERMAFROST REGION

Through the geological condition simulation in permafrost regions, a CFG pile group model is developed, and the pile and frozen soil temperature field was measured on site. ABAQUS program was used to simulate the influence to the group pile and the permafrost temperature with the concrete hydration heat and to determine the temperature distribution in the CFG pile and the frozen soil during concrete setting and after. The calculated temperature distribution in the group pile was compared with the field-model measured data and a good agreement was observed. The influence was analyzed about the temperature distribution in group piles and frozen soil under the heat of concrete hydration and the influence of temperature field by different temperatures of concrete models.