Study on Mechanical Behavior of Fully Encased Composite Slender Columns with High-Strength Concrete Using FEM Simulation

Table 6

Specimens for effects of structural steel encasements.

Group	Column ID	D × B × L (m)	S (mm)	F ck (MPa)	F y (MPa)	Structural steel	S (mm)
Group 1	Control-RHC1	0.3 × 0.25 × 9	50	90	355	—	100
	HC1CS					Circular
	HC1IS					I-shaped
	HC1RS					Rectangular
Group 2	Control-RHC2	0.3 × 0.25 × 9	50	100		—	100
	HC2CS					Circular
	HC2IS					I-shaped
	HC2RS					Rectangular
Group 3	Control-RHC3	0.3 × 0.25 × 9	50	120	355	—	100
	HC3CS					Circular
	HC3IS					I-shaped
	HC3RS					Rectangular