Resistance of Reinforced Concrete Flexural Members with Overlap Reinforcement Coupling under Accidental Action
https://doi.org/10.22227/2949-1622.2025.2.17-29
Abstract
Longitudinal reinforcement couplings, and particularly overlap-coupling, have various levels of ductility. This can influence the response parameters of reinforced concrete structures under dynamic loading by means of changes in the deformability of structures. The study investigates the resistance of reinforced concrete flexural members with overlap reinforcement coupling under dynamic loading in accidental design situations. It provides numerical modeling of reinforced concrete beams using the finite element method in a physically nonlinear three-dimensional formulation, taking into account the parameters of the bond-slip diagram. Based on the results of numerical modeling, the influence of longitudinal reinforcement overlaps couplings on the load-bearing capacity and ductility of reinforced concrete flexural members under dynamic loading arising in an accidental design situation has been assessed. It was established that the ultimate static load, determined based on energy balance, was 0.87 of the failure loads for both the flexural member with overlapping longitudinal reinforcement and the member with continuous reinforcement bars along its entire length. At the same time, the ratio between total and conventionally elastic deformations was 13.4 % higher for the structure with reinforcement coupling.
About the Authors
S. Yu. Savin
Moscow State University of Civil Engineering (National Research University) (MGSU)
Russian Federation
Russian Federation
Sergei Yu. Savin, Candidate of Technical Sciences, Associate Professor, Associate Professor of the Department of Reinforced Concrete and Masonry Structures
26 Yaroslavskoe shosse, Moscow, 129337
Scopus: 57052453700, ResearcherID: M-8375-2016
T. A. Iliushchenko
Kursk State University
Russian Federation
Russian Federation
Tatiana A. Iliushchenko, Candidate of Technical Sciences, Senior Lecturer of the Department of Industrial and Civil Engineering
29 Radishcheva St., Kursk, 305000
Scopus: 57213811914, ResearcherID: AAJ-6459-2021
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Review
For citations:
Savin S.Yu., Iliushchenko T.A. Resistance of Reinforced Concrete Flexural Members with Overlap Reinforcement Coupling under Accidental Action. Reinforced concrete structures. 2025;10(2):17-29. (In Russ.) https://doi.org/10.22227/2949-1622.2025.2.17-29
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