Cyclic behavior of seismically non-conforming interior reinforced concrete beam-column joints

The cyclic behavior of reinforced concrete (RC) beam-column joints (BCJ) is still one of the critical issues in structural engineering. In this context, for the purpose of gaining more in-depth insight into the sophisticated behavior of BCJs under cyclic loading scenarios, the current work aims to investigate the cyclic behavior of reinforced concrete 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 in 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.