Multi-scale analysis on the interface debonding and stress redistribution of CFST assembly with RC ring beams considering long-term concrete shrinkage and creep

Key Points

• Interface debonding occurs due to long-term concrete shrinkage and creep, adversely affecting structural performance.
• A critical finding indicates significant stress redistribution patterns under varying load conditions over time.
• Analysis using computational models evaluates how concrete shrinkage impacts the interaction between CFST and RC structures.
• Insights highlight the need for ongoing assessment of long-term performance in composite structural systems.