Performance evaluation of CFRP-reinforced middle columns in tall buildings: Structural behaviour, buckling resistance, and durability

Abstract

The increasing demand for sustainable and resilient infrastructure has driven the need for innovative materials and design solutions in tall building construction. Traditional steel-reinforced columns have limitations in terms of strength, durability, and environmental resistance, which can lead to significant maintenance and repair costs over time. This research investigates the potential of Carbon Fibre Reinforced Polymer (CFRP) as a reinforcement material in high-rise construction, focusing on its structural performance, durability, and long-term benefits. The study evaluates the performance of CFRP-reinforced middle columns in tall buildings, considering key structural parameters such as axial load capacity, lateral load behaviour, buckling resistance, and durability under various environmental conditions. A combination of design parameters and computational analysis is employed to assess the potential of CFRP as a reinforcement material. The results demonstrate that CFRP-reinforced columns exhibit significantly higher axial load capacity, ranging from , and improved buckling resistance with a critical load capacity of up to . Durability testing reveals that CFRP retains 90% of its load-bearing capacity after exposure to moisture, temperature fluctuations, and corrosive environments. These findings suggest that CFRP offers substantial benefits in terms of strength, durability, and long-term cost savings, making it an ideal material for modern tall building construction, particularly in regions with extreme environmental conditions. The CFRP-reinforced column system developed in this research has the potential to be applied in various high-rise construction projects, including commercial and residential buildings, hospitals, and other critical infrastructure. The use of CFRP can lead to reduced material costs, lower maintenance requirements, and improved structural resilience, ultimately contributing to more sustainable and resilient built environments.