Experimental Study on Anchorage Performance of Improved CFRP/GFRP Hybrid Fiber‐Reinforced Composite Anchor

Fiber reinforced polymers (FRPs), particularly carbon FRP (CFRP), and glass FRP (GFRP), have gained significant attention in civil engineering due to their high strength, lightweight properties, and resistance to corrosion. However, conventional anchors used with CFRP and GFRP reinforcements often exhibit limitations, such as poor compatibility and suboptimal load‐bearing capacity, especially for hybrid fiber reinforcements. This study investigates the anchorage performance of CFRP/GFRP hybrid fiber‐reinforced composite anchors to address these challenges and improve their applicability in engineering practices. Five reinforcement materials with varying CFRP volume fractions were designed, and improved hybrid fiber‐reinforcement anchors were developed. Static tensile tests were conducted to compare the performance of traditional composite anchors and improved anchors, focusing on ultimate load capacity, stress distribution, and failure modes. The results reveal that the improved anchors significantly enhance load‐bearing capacity with a maximum tensile strength of 986.2 MPa and achieve more uniform stress distribution, reducing localized stress concentrations. Optimal performance was observed at a 4% CFRP volume fraction of the CFRP/GFRP tendon, which balances the high strength of CFRP with the economic and corrosion‐resistant properties of GFRP. This study concludes that the improved anchor design effectively addresses slippage issues and enhances the anchorage efficiency for CFRP/GFRP hybrid tendons. The findings offer practical guidance for engineering applications, emphasizing optimized anchor design and material selection to enhance the durability and cost‐effectiveness of reinforced structures.