Numerical calculation of bent reinforced concrete elements of rectangular section in the Abaqus software

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Abstract

The calculation of building structures to a large extent began to be performed using automated software systems based on the finite element method. An urgent issue of the widespread use of this type of calculation is the accuracy of the calculation results in comparison with experimental data. In this study, by numerical simulation using the Abaqus software package, the stress-strain state of a bent reinforced concrete element of a rectangular cross section is investigated. Numerical modeling of the element is performed by volumetric finite elements, taking into account the non-linear (actual) state diagram of concrete, described by the model of plastic fracture of concrete with damage (CDP). Reinforcement is specified by rod finite elements, with a combination of elastic properties and metal plasticity model. The loading of the beam element in the model is performed statically with the application of concentrated forces at the centers of the thirds of the design span. As a result of the finite element calculation, the distribution of stresses in concrete and reinforcement according to Mises, deformations of finite elements along the main axes, as well as a model of concrete damage with increasing load were obtained. The obtained results showed a high convergence with the experimental data of testing beams for bending along a normal section, which allows using this algorithm for automated finite element analysis in the design of bending reinforced concrete structures.

About the authors

Vladimir I. Rimshin

National Research Moscow State University of Civil Engineering; Research Institute of Construction Physics of the Russian Academy of Architecture and Construction Sciences

Author for correspondence.
Email: v.rimshin@niisf.ru
ORCID iD: 0000-0003-0209-7726

full member of the Russian Academy of Architecture and Construction Sciences, Doctor of Technical Sciences, Professor, Department of Housing and Communal Complex, Institute of Environmental Engineering and Mechanization

26 Yaroslavskoye Shosse, Moscow, 129337, Russian Federation; 21 Lokomotivnyi Proezd, Moscow, 129238, Russian Federation

Pavel A. Amelin

Belgorod State Technological University named after V.G. Shukhov

Email: p.amelin@inbox.ru
ORCID iD: 0000-0002-7104-3214

postgraduate student, assistant of the Department of Construction and Urban Economy

46 Kostyukova St, Belgorod, 308012, Russian Federation

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Copyright (c) 2022 Rimshin V.I., Amelin P.A.

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