Calculation of a prefabricated monolithic at the same time deformable bent element according to the second group of limit states
https://doi.org/10.52170/1815-9265_2023_65_48
Abstract
An important design feature of prefabricated monolithic structures is that they consist of prefabricated and monolithic parts, represented in turn by concrete of different ages, as well as, sometimes, of different types and classes. In the end, prefabricated monolithic structures consist of concretes with different strength, deformation and other physical and mechanical properties. In addition, it is also possible to involve precast and monolithic concrete in the deformation process at different times and simultaneously. Thus, it becomes obvious that both the nature of the formation of the stress-strain state and the calculations of prefabricated monolithic structures for the first and second groups of limit states are much more complex than for reinforced concrete structures consisting of concretes of the same type. The design features listed above should be reflected in the regulatory methods for the calculation of prefabricated monolithic structures.
Within the framework of this article, certain refinements are proposed in relation to existing methods for calculating prefabricated monolithic structures for the second group of limit states. These refinements were determined on the basis of studying the structural features inherent in prefabricated-monolithic bent elements and determining the features of the formation of their stress-strain state. In addition, normative methods for calculating prefabricated monolithic structures for the second group of limit states, as well as other methods recommended by various scientists and engineers of the construction field, were considered. The methodology presented by the authors for calculating prefabricated monolithic structures for the second group of limit states allows us to take into account the features of such structures, including the difference in the deformation and strength properties of these concretes.
Satisfactory convergence was obtained by comparing the results of theoretical calculations with the data obtained during experimental studies.
About the Authors
A. A. Koyankin
Siberian Federal University
Russian Federation
Russian Federation
Alexander A. Koyankin – Associate Professor, Building Structures and Control Systems Department, Candidate of Engineering
Krasnoyarsk
V. M. Mitasov
Novosibirsk State University of Architecture and Civil Engineering
Russian Federation
Russian Federation
Valery M. Mitasov – Professor, Department of Reinforced Concrete Structures Department, Doctor of Engineering
Novosibirsk
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Review
For citations:
Koyankin A.A., Mitasov V.M. Calculation of a prefabricated monolithic at the same time deformable bent element according to the second group of limit states. Bulletin of Siberian State University of Transport. 2023;(2):48-54. (In Russ.) https://doi.org/10.52170/1815-9265_2023_65_48
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