Enhancing Performance-Based Seismic Design through RC Column Jacketing: A Pathway to Improved Structural Safety

Abstract

In seismic-prone regions, improving the structural resilience of older buildings is critical for minimizing potential collapse and protecting lives. Concrete jacketing has emerged as a widely adopted retrofitting technique for enhancing the structural performance of columns in existing buildings. This study investigates the effectiveness of concrete jacketing in elevating the performance level of a building as defined by ASCE/SEI 41-17 standards. Through pushover analysis, this research demonstrates that concrete jacketing substantially enhances plastic hinge rotation capacity, reduces story displacement, and decreases inter-story drift. The findings highlight the critical role of column strengthening in seismic retrofitting efforts, offering practical insights for engineers and architects aiming to bolster the safety of vulnerable structures.