Estimation of Technical Condition of Half-Finished Pile-Foundation Buildings Under Seasonal Soil Freezing Conditions

The paper presents research results on the long-term deep seasonal soil freezing and heaving that has an effect on the structural deformation of half-finished pile foundation buildings in West Siberia. The instrumental examination and static calculations are given to the spatial system of such buildings. The investigation of the five-story residential building in the Novosibirsk region shows that perennial soil freezing occurs in the basement leading to pile break due to soil heaving. Subsequent foundation soil thawing reduces the bearing capacity of the piles due to deterioration of construction properties of thawing soils. The investigation of flight detachment building in the Tomsk airport shows that the maximum values of soil freezing and heaving are achieved in the central part of basements, that leads to the nonuniform deformation of building structures. Practical recommendations are suggested for diagnostics, assessment and forecasting changes in technical conditions of buildings.

здания, сооружения, строительные конструкции, фундамент, свая, обследование, техническое состояние, деформации, грунты, силы морозного пучения, глубина промерзания, инженерно-геологические условия, buildings, building structure, foundation, pile, inspection, technical condition, deformation, soil heaving, frost penetration, geological engineering conditions

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