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Unified design of CFDT stub columns with diverse sections under axial compression
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DOI：10.1016/j.jcsr.2026.110490.png)
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Abstract
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• General and specific formulas were proposed to predict the axial resistance of CFDT stub columns. • Non-uniform confinement was decoupled from dual confinement effects by using circular CFDT columns as reference. • The unified method proved more accurate and consistent than existing profile-specific methods. • The GB 50936-adapted method overestimates axial resistance if inner concrete strength is much higher than sandwiched one.
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