Hou W*, Feng G, Liu Y, Zhang YX, Huang JC. Seismic performance of FRP reinforced concrete beam-concrete filled FRP tube column assembly for marine infrastructure. Engineering Structures, 2026, 359: 122729. https://doi.org/10.1016/j.engstruct.2026.122729

Release time:2026-05-18  Hits:

• Abstract:Fiber-reinforced polymer (FRP) concrete structures exhibit significant potential for applications in marine infrastructure. Ensuring the safety and reliability of FRP concrete beam-column connections in complex and harsh marine environments is crucial for the widespread adoption of this structural form. This study proposes a novel FRP-reinforced concrete beam-concrete-filled FRP tube (CFFT) column joint configuration that is corrosion-resistant, easy to construct, and suitable for marine engineering. In the joint design, the glass FRP (GFRP) tube of the column is truncated at the joint, allowing the longitudinal reinforcement of the beam to pass through the core area. Closely spaced GFRP stirrups are incorporated into the core to enhance the compressive and shear capacities of the joint. Five 1/2-scale specimens were designed, fabricated, and subjected to reversed cyclic loading tests to investigate the effects of spiral stirrup reinforcement ratio and axial compression ratio on the seismic performance of the beam-column assembly. The experimental results indicate that failure in all assemblies occurred at the beam ends, demonstrating superior deformability, energy dissipation capacity, and ductility. As the final failure mode is beam-end failure, increasing the stirrup ratio and axial compression ratio has little effect on the lateral bearing capacity of the specimens, but markedly reduced joint damage. Based on the experimental findings and force analysis of the assembly, a formula for predicting the peak load-bearing capacity of the beam-column assembly was developed.
• Translation or Not:no
• Included Journals:SCI

• 1.Seismic performance of FRP reinforced concrete beam-concrete filled FRP tube column assembly for marine infrastructure.pdf