Steel reinforced concrete columns, with their high bearing capacity, good seismic performance, high construction efficiency, and economic advantages, have widely replaced traditional steel and concrete components and are applied in various engineering scenarios.
Polygonal CFST columns (square, hexagonal, octagonal) have received continuous attention from academia and engineering in recent years due to their flexible architectural design and convenient connection of beam column nodes brought by flat surfaces, which meet the diverse needs of modern architecture.
The ultimate bearing capacity of short column under axial compression is the core parameter of CFST column design, and it is also the basis for understanding the steel tube concrete constraint mechanism and establishing analytical models.
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