Numerical analysis of CFRP-Confined Circular Concrete Columns Under Axial Loading

Abstract

A numerical simulation study was conducted to investigate the axial compression performance of circular columns strengthened with carbon fiber-reinforced polymer (CFRP). The study's primary objective was to validate a finite element program Abaqus model by matching results with previous experiments, ensuring consistent failure modes and load-displacement profiles. The investigation explored the impact of various parameters, including concrete strength, CFRP layer numbers, slenderness ratio, steel reinforcement ratio, and cross-sectional area, on CFRP column behavior. The analysis revealed valuable insights into stress-strain relationships and ultimate load-bearing capacity. This research provides vital information for structure engineering practices and design strategies in the industry, highlighting the significance of utilizing CFRP technology for enhanced structural performance, especially the consistent stress distribution on the concrete core. By understanding the mechanical response of CFRP circular columns, engineers can optimize design and construction techniques to create more efficient and durable structures, ultimately improving public safety and reducing maintenance processes.

Keywords

• nonlinear analysis
• cfrp- column
• ultimate capacity
• axial stress
• elongation ratio