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.Ilshat T. Mirsayapov, Doctor of technical sciences, associate professor, Kazan State University of Architecture and Engineering, Kazan, Russian Federation E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Rustam I. Minzyanov, assistant, Kazan State University of Architecture and Engineering, Kazan, Russian Federation E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Almaz M. Zainutdinov, project engineer, Design Institute Soyuzkhimpromproekt, Kazan, Russian Federation E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it
Title of the articleNumerical study of the stress-strain state in the contact zone of concrete and reinforcement under static loading
Abstract.The Finite Element Method is used to simulate the behavior of the concrete-reinforcement contact zone when testing the pull-out of a single bar embedded in a concrete block. In the proposed model, elements are introduced into the contact zone, simulating deformations of reinforcement and surrounding concrete and simulating load transfer. This approach allows accurate modeling of the nonlinear response at high confining pressures. The purpose of the study: for given geometric, physical and mechanical characteristics, to choose the most appropriate theories of the strength of materials for using the created model in solving scientific, technical and engineering problems. To achieve this goal, it is necessary to perform a number of tasks: create a computer model, set the necessary characteristics of materials for it to work correctly; perform a verification calculation, compare it with existing experimental and theoretical studies; make a conclusion about the performance of the model and the areas of its application. Results. We propose a model in the Ansys software package based on the finite element method. When developing the model, the experience of domestic and foreign scientists and researchers in terms of the choice of finite elements was taken into account. The model takes into account the real geometric, mechanical, physical parameters of objects. The model allows you to set different geometry and physical and mechanical characteristics of materials. The test results of 9 samples were obtained. A comparison of the finite element model with full-scale experiments is given. Conclusions. As a result of the comparison, it was established that the calculation by the proposed numerical model is in good agreement with the results of experimental studies by other authors. This model is recommended to be used to determine stresses and displacements in the contact zone "concrete-reinforcement" for solving scientific and engineering problems.
Keywords.reinforced concrete; adhesion of reinforcement to concrete; finite element method; concrete damage plasticity model 2 (CDPM2); pull-out test
For citations:Mirsayapov Ilshat T., Minzyanov R.I., Zainutdinov A.M. Numerical study of the stress-strain state in the contact zone of concrete and reinforcement under static loading // News KSUAE, 2023, № 3(65), p.122-134, DOI: 10.52409/20731523_2023_3_122, EDN: JKTSTG


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