Stress-Strain State of Reinforced Concrete Elements with Indirect Reinforcement
A. V. Niedoriezov
Donbas National Academy of Civil Engineering and Architecture
Annotation: The results of the analysis of the stress-strain state of reinforced concrete elements with indirect reinforcement under uniaxial compression, carried out numerical tests by using the software systems «Lira SAPR» and «ANSYS» are presented in this article. A physically nonlinear calculation of reinforced concrete samples of prisms was performed using the relations of the orthotropic dilatation model of concrete deformation. The criterion for the destruction of prismatic samples in the calculation was the achievement of the maximum values of stresses in concrete, taking into account the non-axial stress state according to the strength criteria of S. F. Klovanich – D. I. Bezushko and K. J. Willam – E. P. Warnke, as well as stresses in the longitudinal and transverse reinforcement of the yield strength of steel. In general, taking into account the physical nonlinearity of the deformation of materials allows us to estimate the deformations and the bearing capacity of the elements of samples-prisms with indirect reinforcement in the software complexes «Lira SAPR» and «ANSYS» with a sufficient degree of accuracy. The analysis results are consistent with the current regulatory documents. The relations of the volumetric stress state in concrete and the stresses in the grids of indirect reinforcement are determined, depending on the percentage of indirect reinforcement for the elements used in the work.
Keywords: concrete, indirect reinforcement, short centrally compressed element, volumetric stress state, strength, deformations, strength criteria, dilatation, concrete deformation models.
Pages: 5-18.
Link for citation: Niedoriezov, A. V. Stress-Strain State of Reinforced Concrete Elements with Indirect Reinforcement. – Text : electronic. – In: Modern Industrial and Civil Construction. – 2021. – Vol. 17, N 1. – Р. 5-18. – URL: https://donnasa.ru/publish_house/journals/spgs/2021-1/01_nedorezov.pdf (date of access: 16.09.2024). (in Russian)
Vol. 17, N 1 (2021)Journal: Modern Industrial and Civil Construction
Publish house: Donbas National Academy of Civil Engineering and Architecture