Finite Element for the Analysis of Reinforced Concrete Beams with Non-Uniform Steel Fiber Reinforcement
- 作者: Markovich A.S.1,2, Agapov V.P.1, Golishevskaia D.A.1
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隶属关系:
- RUDN University
- National Research Moscow State University of Civil Engineering
- 期: 卷 21, 编号 2 (2025)
- 页面: 83-95
- 栏目: Analysis and design of building structures
- URL: https://journals.rcsi.science/1815-5235/article/view/325914
- DOI: https://doi.org/10.22363/1815-5235-2025-21-2-83-95
- EDN: https://elibrary.ru/MOLUMW
- ID: 325914
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A method has been developed for calculating and constructing a physically nonlinear finite element of a multilayer reinforcement beam, which allows to calculate the values of displacements, strains and stresses in a characteristic layer. To establish the actual stress-strain state of bent heterogeneous fiber reinforced concrete elements, an experimental study of a steel-fiber-concrete beam with non-uniform fiber reinforcement along the cross-section height (from 0.5 to 2.0%) was carried out. Strains and displacements of the beam at characteristic points are determined, and normal tensile and compressive stresses are obtained. The experimental data obtained were used to verify the finite element of the multilayer reinforcement beam. The developed finite element of the beam was based on the modified theory of calculation of multilayer beams proposed by P.M. Varvak. The multilayer beam model takes into account the curvature of the cross section under the action of shear stresses by including the generalized component of shear strain in the functional of the total potential energy. In addition to the experimental data, nonlinear analysis of a multilayer beam was performed in the Ansys software package. The discrepancy between the calculation results using the developed finite element and the experimental data ranged from 6 to 11%, and from 11 to 15% with the calculation results obtained in Ansys. The developed finite element is integrated into the PRINCE computing complex, and as part of this program it can be used to calculate heterogeneous fiber-reinforced elements.
作者简介
Alexey Markovich
RUDN University; National Research Moscow State University of Civil Engineering
Email: markovich-as@rudn.ru
ORCID iD: 0000-0003-3967-2114
SPIN 代码: 9203-1434
Doctor of Technical Sciences, Associate Professor of the Department of Construction Technology and Structural Materials, Academy of Engineering, RUDN University; Associate professor of the Department of Fundamental Education, National Research Moscow State University of Civil Engineering
6 Miklukho-Maklaya St, Moscow, 117198, Russian Federation; 26 Yaroslavl Highway, Moscow, 129337, Russian FederationVladimir Agapov
RUDN University
Email: agapovpb@mail.ru
ORCID iD: 0000-0002-1749-5797
SPIN 代码: 2422-0104
Doctor of Technical Sciences, Associate Professor of the Department of Construction Technology and Structural Materials, Academy of Engineering
6 Miklukho-Maklaya St, Moscow, 117198, Russian FederationDarya Golishevskaia
RUDN University
编辑信件的主要联系方式.
Email: miloserdova-da@rudn.ru
ORCID iD: 0000-0003-0835-528X
SPIN 代码: 1276-6516
Candidate of Technical Sciences, Assistant of the Department of Construction Technology and Structural Materials, Academy of Engineering
6 Miklukho-Maklaya St, Moscow, 117198, Russian Federation参考
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