Deformation of concrete of a reinforced concrete frame in the ultimate state
https://doi.org/10.33979/2073-7416-2025-119-3-73-85
Abstract
A model of static-dynamic deformation of compressed concrete in the ultimate state is proposed, as applied to the calculation scheme of a second-level reinforced concrete frame under a special impact. The main working hypotheses for determining the static-dynamic deformation of concrete are constructed and analytical dependencies are obtained for determining the ultimate deformations in concrete of the compressed zone during the transition of the n-times statically indeterminate system to the (n- 1) system. Concrete of the compressed zone is modeled by a representative volume in the form of a concrete prism of characteristic dimensions. For a reinforced concrete frame, a first-level calculation model with spatial sections simulating a complex stress state in a spatial crack of a complex-stressed beam is constructed. In the frame elements with the considered spatial sections, the distances between cracks and the ultimate deformations of concrete preceding destruction are taken into account.
Keywords
About the Authors
V. I. KolchunovRussian Federation
Kolchunov Vladimir Iv. - Corresponding Member of the Russian Academy of Architecture and Construction Sciences, Doctor of Technical Sciences, Professor, Professor of the Department of Engineering Graphics and Computer Modeling; Leading Researcher,
Moscow.
T. A. Iliushchenko
Russian Federation
Iliushchenko Tatiana A. - Head of the Department of Technical Standardization in the Field of Construction; Senior Lecturer of the Department of Industrial and Civil Engineering. Construction,
Moscow;
Kursk.
S. S. Fedorov
Russian Federation
Fedorov Sergey S. - Candidate of Technical Sciences, Head of the Department of Engineering Graphics and Computer Modeling,
Moscow.
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Review
For citations:
Kolchunov V.I., Iliushchenko T.A., Fedorov S.S. Deformation of concrete of a reinforced concrete frame in the ultimate state. Building and Reconstruction. 2025;(3):73-85. (In Russ.) https://doi.org/10.33979/2073-7416-2025-119-3-73-85