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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.Fardiev R.F. – candidate of technical sciences, senior lecture E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Ashrapov A.H. – candidate of technical sciences, assistant 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 articleApplication of the theory of compound bars for the assessment of stress pattern in the cross section of a strengthened beam column
Abstract.This study deals with the problem of assessment of stress-strain behavior of reinforced structures. The beam column strengthened by a collar is viewed as a complex compound structure of variable cross-section consisting of interconnected bars. Such an approach allowed us to obtain data on the three-dimensional stress state of the structure that provides an opportunity to estimate the strength of the contact surface between the strengthened element and the collar, as well as to assess the strength of the whole element. A distinctive feature of this approach is a departure from the plane-sections hypothesis that makes it possible to get more reliable data on the stress-strain behavior of structures. To test the received expressions the article presents the results of comparison of calculations of the strengthened element on the suggested approach and existing approaches. Analysis of the obtained results showed that the proposed approach of calculation is well correlated with the results of previous studies. A graphical representation of the results of estimation of the stress on the contact surface corresponds to the physical model of the strengthened element. The obtained results can be used in the calculation of strengthening columns, buildings and structures supports when strengthening by reinforced concrete collar.
Keywords.compound bars, strengthening of concrete structures, reinforced concrete collar, contact surface, compression element.
For citations:Fardiev R.F., Ashrapov A.H. Application of the theory of compound bars for the assessment of stress pattern in the cross section of a strengthened beam column // Izvestiya KGASU. 2015. №4(34) P.363-368.


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