EXPERIENCE OF CONSTRUCTION OF HIGH-RISE BUILDING FOUNDATIONS IN THE CONDITIONS OF THE SOUTH OF TYUMEN REGION

Subject: foundatons of high-rise buildings in Tyumen which possess the properties of active regulation of their interaction with the soil bed. Research objectives: assessment of the experience of using soil bed pressing for combined footings, and application of strip-shell footings for construction of high-rise buildings (up to 25 floors or 75 m high) in the presence of highly compressible soil. Materials and methods: geotechnical monitoring data of the technical condition of residential high-rise buildings during the construction process and in operation. Results: the results of monitoring 17-storey residential building and three 22-storey residential buildings prove that the strip-shell foundation is highly efficient. Its efficiency consists in decrease of settlements as compared to slab foundations, and also reduction of cost and construction duration. Practical applications of combined strip-pile foundations with the possibility of regulation of stress-strain behavior of soil bed by its pressing confirmed the efficiency of the developed design solutions. This efficiency consists in assurance of operational reliability of objects of construction, and also decrease of material consumption and the cost as compared to traditional pile-slab foundations. Conclusions: taking into account the obtained results and a general progress in geotechnical science and technologies, practical application of foundations which possess the properties of active regulation of their interaction with the soil bed allows us to decrease the cost associated with their construction for high-rise buildings, especially in the presence of highly compressible soil beds.