Cyclic Behavior of Seismically Non-Conforming Interior Reinforced Concrete Beam-Column Joints

• Type: Article in International Scientific Journal
• Date: 2025

Authors

Sabbahfar, P (Author) Other; Melo, J (Author) Other; Costa, A (Author) Other; Humberto Varum (Author) FEUP; Rodrigues, H (Author) Other

Journal

Title: Buildings

Vol. 15

Final page: 202

ISSN: 0007-3725

Publisher: MDPI

Indexing

ISI Web of Knowledge - 0 Citations

Scopus - 0 Citations

Other information

Authenticus ID: P-017-ST5

DOI: 10.3390/buildings15020202

Abstract (EN): The cyclic behavior of reinforced concrete (RC) beam-column joints (BCJs) is still one of the critical issues in structural engineering. In this context, for the purpose of gaining a more in-depth insight about the sophisticated behavior of BCJs under cyclic loading scenarios, the current work aims to investigate the cyclic behavior of reinforced concrete beam-column joints. The cyclic behavior of four interior reinforced concrete beam-column joints, with plain and deformed bars, which are representative of the seismically non-conforming structures from the 1970s, were experimentally investigated. The corresponding results of the specimens were compared with each other to better understand and highlight the differences between the force-drift curves and envelopes and damage patterns of each of the specimens. Furthermore, a numerical validation of the laboratory testing results was established with the DIANA FEA code for both monotonic and cyclic loading scenarios, and the force-displacement plots were compared with the associated laboratory results for validation purposes. The crack propagation and final damage states of the numerical models of beam-column joints are presented and discussed in detail. The results showed good agreement between the numerical and experimental behavior, and a graphical representation of the critical regions affected by damages was also shown, which could ultimately contribute to future retrofitting solutions for strengthening the BCJ region in existing RC structures.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 22