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.Mirsayapov Ilizar Talgatovich doctor of technical sciences, professor E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Aysin Niyaz Nailovich post-graduate student E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Kazan State University of Architecture and Engineering The organization address: 420043, Russia, Kazan, Zelenaya st., 1
Title of the articleGrowth of vertical deformations of building in an influence zone of deep pit
Abstract.Problem statement. Existing calculation methods of building settlement are based on the case of a single short-term static loading. These methods are not able to take into account the actual loading conditions of soil subgrade, including a change in the mechanical characteristics of soils in the previous stages of loading, the manifestation of rheological properties over time, the formation and development of cracks, as well as changes in loading conditions. This paper provides a methodology for calculating settlements, taking into account the abovementioned changes of soil parameters and loading conditions. Results. The proposed calculation method takes into account changes in the tridimensional stress-strain state of the soil, creep, unloading, prolonged loading, formation and development of micro- and macrocracks in the soil mass of the subgrade. It is based on a modified Pasternak model. The model modified by transforming the soil deformation diagrams under triaxial long-term loading. The ultimate stresses in the soil, taking into account the history of loading, formation and development of cracks in the soil, are determined based on the calculation model of the soil under three-axial compression. Conclusions. The significance of the results obtained for the construction industry is that the developed method allows you to get more reliable results. The developed method was tested on a real reconstructed object. The deformation plots and settlement values obtained as a result of calculations were confirmed by the results of monitoring.
Keywords.foundation, subgrade, soil, deep pit, interaction, rheology, calculation method, Pasternak, nonlinear deformation.
For citations:Mirsayapov Ilizar T., Aysin N.N. Growth of vertical deformations of building in an influence zone of deep pit // Izvestiya KGASU. 2020. №1(51) P.101-108.


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