Seismic performance of damaged beam-columns is a crucial area of research in earthquake engineering and structural engineering. The ability of beam-columns to withstand seismic loading is of utmost importance to ensure the safety of reinforced concrete and steel structures during earthquakes. The seismic behavior of beam-columns can be significantly affected by damage due to corrosion or other factors. In this context, the research by A Kanchanadevi focuses on the seismic performance of damaged beam-columns. The study aims to evaluate the seismic behavior of sub-assemblages of beam-columns that are deficient due to corrosion and other forms of damage. The research investigates the seismic vulnerability of such structures and proposes upgradation and retrofit strategies to improve their seismic performance. The research focuses on the seismic performance of both concrete and steel structures. It examines the effects of corrosion and other forms of damage on the seismic response of beam-columns. The study evaluates the seismic behavior of beam-columns under various loading conditions and proposes retrofit strategies to enhance their seismic resistance. The research also investigates the use of shake table testing to evaluate the seismic performance of beam-columns. It explores the application of failure analysis and ductility assessment techniques to assess the seismic capacity of beam-columns. The research emphasizes the importance of seismic retrofitting and strengthening strategies to ensure the seismic safety of existing structures. The study of seismic performance of damaged beam-columns is critical for seismic retrofitting and strengthening of existing structures. The research by A Kanchanadevi provides valuable insights into the seismic behavior of beam-columns and proposes effective retrofitting and upgradation strategies. The study also emphasizes the need for seismic codes and standards to ensure the seismic safety of structures.