Work

Deformation of concrete of a reinforced concrete frame in the ultimate state

Year: 2025

Type: article

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.

Source: Building and reconstruction

DOI: 10.33979/2073-7416-2025-119-3-73-85

Authors: V. I. Kolchunov, T. A. Iliushchenko, S. S. Fedorov

Institutions: Russian Academy of Architecture and Construction Sciences, Moscow State University of Civil Engineering, Kursk State University

Language: English

Topic: Structural Response to Dynamic Loads

Subfield: Civil and Structural Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Funder: Russian Science Foundation

Award: G1455408979