Experimental and analytical models of longitudinal deformation in pipe-concrete specimens with small cross-sections
- Authors: Khazov P.A.1, Erofeev V.I.2, Nikitina E.A.2, Pomazov A.P.1
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Affiliations:
- Nizhny Novgorod State University of Architecture and Civil Engineering
- Institute of Mechanical Engineering Problems of the Russian Academy of Sciences - Branch Federal Research Center named after Gaponov-Grekhov of the RAS
- Issue: Vol 19, No 4 (2023)
- Pages: 410-418
- Section: Experimental researches
- URL: https://journals.rcsi.science/1815-5235/article/view/325831
- DOI: https://doi.org/10.22363/1815-5235-2023-19-4-410-418
- EDN: https://elibrary.ru/VPVGFF
- ID: 325831
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Abstract
The results of experimental studies of deformation problems in pipeconcrete specimens with small cross sections are provided and analyzed. The stress-strain state of a steel pipe and a pipe filled with concrete is studied and compared. Experimental determination of the dependencies between axial load and deformations of pipe-concrete and steel bars, as well as evaluation of concrete’s and steel pipe’s contribution to the total load-bearing capacity of the composite section are provided. Tests were carried out for short pipe-concrete specimens with the pipe dimensions equal to 60x2, 76x3 and 102x3.5, as well as for hollow steel pipes with the corresponding dimensions. The diagrams of deformation were obtained basing on the experimental results. The deformation of the pipe-concrete element under central compression occurs in proportion to the deformation of a hollow steel element with the same diameter, that made it possible to evaluate the contribution of concrete to the work of the pipe-concrete cross-section, which turned out to be constant at each stage of deformation. A methodology has been proposed that enables to describe analytically the deformability of pipe-concrete elements under axial compression by means of the analytical model based on the experimental data.
About the authors
Pavel A. Khazov
Nizhny Novgorod State University of Architecture and Civil Engineering
Author for correspondence.
Email: khazov.nngasu@mail.ru
ORCID iD: 0000-0003-1220-6930
Candidate of Technical Sciences, Associate Professor of the Department of Theory of Structures and Technical Mechanics, Head of the Laboratory for Continuous Monitoring of the Technical Condition of Buildings and Structures
Nizhny Novgorod, Russian FederationVladimir I. Erofeev
Institute of Mechanical Engineering Problems of the Russian Academy of Sciences - Branch Federal Research Center named after Gaponov-Grekhov of the RAS
Email: erof.vi@yandex.ru
ORCID iD: 0000-0002-6637-5564
Doctor of Physics and Mathematics Sciences, Professor, Director of Institute of Mechanical Engineering Problems
Nizhny Novgorod, Russian FederationElena A. Nikitina
Institute of Mechanical Engineering Problems of the Russian Academy of Sciences - Branch Federal Research Center named after Gaponov-Grekhov of the RAS
Email: nikitina.ea.nn@gmail.com
ORCID iD: 0009-0000-1189-1062
Candidate of Technical Sciences, Associate Professor, Senior Researcher of Institute of Mechanical Engineering Problems
Nizhny Novgorod, Russian FederationArtyom P. Pomazov
Nizhny Novgorod State University of Architecture and Civil Engineering
Email: pomazov.a.p@yandex.ru
ORCID iD: 0009-0009-5465-3692
Postgraduate Student in Department of Structural Theory and Technical Mechanics, Assistant Professor in the Department of Building Structures
Nizhny Novgorod, Russian FederationReferences
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