Seismic Damage Behavior of Aeolian Sand Concrete Columns with an Inner Square Steel Tube

Table 5

Characterized points on the column specimens.

Specimen	Initial cracking		Yielding		Limit stage		Failure stage
	Fcr (kN)	Δcr (mm)	Fy (kN)	Δy (mm)	Fmax (kN)	Δmax (mm)	Fu (kN)	Δu (mm)
PC1	21.1	1.61	61.40	8.75	70.50	18.58	59.54	34.20
SC1	21.6	1.51	63.79	9.25	74.83	19.10	63.56	36.73
SC2	23.2	1.64	67.63	9.43	79.85	19.70	68.15	39.00
SC3	24.7	1.58	69.44	9.64	82.25	19.94	69.91	42.80
TSC1	27.5	4.24	101.70	12.22	130.22	44.31	104.16	56.34
TSC2	28.1	4.62	102.12	12.48	137.51	48.48	110.02	59.30
TSC3	29.5	4.91	102.81	12.73	145.72	53.35	116.56	61.24