New issues - Известия Казанского государственного архитектурно-строительного университета.

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First name, Middle name, Last name, Scientific degree, Scientific rank, Current position. Full and brief name of the organization, The organization address.Ilizar T. Mirsayapov, Doctor of technical sciences, professor, Kazan State University of Architecture and Engineering, Kazan, Russian Federation Niyaz N. Aysin, postgraduate student, Kazan State University of Architecture and Engineering, Kazan, Russian Federation
Title of the articleAssessment of the deep excavation effect on additional settlement of surrounding buildings
Abstract.Abstract: Problem statement: In restrained urban conditions the design and construction of new facilities is increasingly carried out in close proximity to existing buildings, which requires the development of a model for calculating the deformations of building foundations in a single system with foundations, basement and surrounding soil. The purpose of this work was to assess the impact of the excavation of a pit with a depth of 13 m next to an existing building without a protective fence. To do this, it is necessary to assess the influence of the deep excavation on the existing building and develop a calculation model for determining the deformations of the building foundation considering joint deformation in the system of superstructure and substructure - foundations - subgrade. Results: Complex modeling of the stress-strain state and numerical studies have made it possible to establish that the construction of a deep excavation led to simultaneous vertical and horizontal movement of the soils of the building foundation base 30.1 mm and 19.8 mm, respectively. There were a lot of shifting lines of the soil mass under the foundations, indicating the achievement of the first limit state of the foundations bases. The construction of a deep excavation led to excessive and additional deformation of the foundations, the tilt of the foundations and the building as a whole, as well as to the stress in the structures above the maximum permissible. Conclusions: The significance of the developed foundation model for the construction industry lies in the fact that it allows you to determine foundations settlement, taking into account the loading modes.
Keywords.foundation settlement, deep pit, surrounding buildings, loading mode, design model.
For citations:Mirsayapov Ilizar T., Aysin N.N Assessment of the deep excavation effect on additional settlement of surrounding buildings.// News KSUAE, 2022 №3 (61), p.6-13, DOI:10.52409/20731523_2022_3_6, EDN: ESCYYW


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