Comparison of reinforcement methods with advanced materials for r/c columns

Abstract

Earthquake damage in regions with high seismic risk highlights the need for. measures to improve the earthquake performance of existing structures. One such measure is strengthening these structures to bring them up to the desired performance levels. In this study, the damage to reinforced concrete (RC) buildings was examined in light of the February 6, 2023, Kahramanmaraş (Türkiye) earthquakes to identify the reinforcement needs of RC structures. Numerical analyses were conducted, considering two main factors affecting the shear force capacity in RC columns: low-strength concrete and inadequate transverse reinforcement. The columns were strengthened using four different types of fibre-reinforced polymer (FRP) wrapping, applied to all columns where the shear force was exceeded. The results for the reference building and the four different wrapping methods were compared, and suggestions were made. It was found that all four wrapping methods significantly increased the shear strength capacities of the columns without causing any failure.

Keywords

• column
• cfrp
• gfrp
• afrp
• brfp
• reinforcement
• shear force capacity
• advanced materials
• sustainable structure