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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.Aleksandr A. Koiankin, Candidate of Technical Sciences, Siberian Federal University, Krasnoyarsk, Russian Federation E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Valery M. Mitasov, Doctor of Technical Sciences, Novosibirsk, Russian Federation E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it
Title of the articleResults of experimental studies of the stress-strain state of a prefabricated monolithic frame
Abstract.Prefabricated monolithic housing construction in Russia and other countries has been actively developing in recent years. There is a constant increase in the volume of construction from precast-monolithic reinforced concrete. Along with this, the features of the deformation process of prefabricated monolithic buildings that arise during installation have not been sufficiently studied. The purpose of experimental research is to study the peculiarities of the formation of the stress–strain state of a flat frame of a prefabricated monolithic framework, taking into account the phased installation and loading. The objectives of the study are: development of a methodology for conducting an experiment of step-by-step installation and loading of a prefabricated monolithic frame; conducting an experiment; analyzing the results obtained. Results. Experimental studies of a prefabricated monolithic flat frame took into account the stages of installation and loading. The first stage is the installation of prefabricated elements (columns, prefabricated parts of crossbars) and their subsequent loading with a load simulating the weight of monolithic concrete and supported elements. The second stage (the load of the first stage is not removed) is laying of monolithic concrete, the set of the required strength and inclusion in the deformation process, the application of an additional load modeling the weight of floor structures, partitions, curtain walls and operational load. As a result of the conducted research, the features of the formation of the stress-strain state of the prefabricated monolithic frame are determined. A change in the nature of the formation of the stress-strain state of the frame of a prefabricated monolithic building after laying monolithic concrete and involving it in the deformation process has been revealed. Conclusions. The conducted experimental studies indicate that the process of installation and step-by-step involvement in the deformation process of both individual elements (columns, crossbars) of the prefabricated monolithic frame and the components of these elements (prefabricated and monolithic parts of the crossbar) determines the nature of the formation of stress-strain of the prefabricated monolithic frame.
Keywords.reinforced concrete structures, prefabricated monolithic structures, experimental studies, flat frame, installation, stress-strain state, deflections, crack resistance, concrete deformations
For citations:Koiankin A.A., Mitasov V.M. Results of experimental studies of the stress-strain state of a prefabricated monolithic frame // News KSUAE, 2023, № 4(66), p.17-24, DOI: 10.52409/20731523_2023_4_17, EDN: ARQEHE


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