| dc.description.abstract | Seismic retrofitting is an essential strategy to improve the performance of existing reinforced
concrete (RC) buildings against earthquakes. In Bangladesh, where seismic vulnerability has
become a growing concern due to increasing urbanization and the country’s location in an
active seismic zone, strengthening existing structures has high importance. This study focuses
on the retrofitting of columns and beams using steel jacketing techniques, with the numerical
modeling and analysis carried out in ETABS 17. The objective is to investigate how steel
jacketing can improve the load-carrying capacity, stiffness, and ductility of RC members
while reducing drift and enhancing resistance against earthquake magnitudes defined in
BNBC 2020. Through analytical modeling, both original and retrofitted structures are
compared in terms of inter-story drift, base shear, and overall stability during seismic loading.
Results demonstrate that steel jacketing significantly increases the lateral strength and
reduces seismic drift, thereby providing an effective and economical retrofitting solution in
compliance with BNBC 2020 requirements. This research contributes to practical
applications in structural engineering, highlighting a feasible method for extending the
service life and safety of vulnerable structures in seismic-prone regions. | en_US |
