Axial Cyclic Testing of Concrete-Filled Steel Tube Columns in Diagrid Structures

Table 3

Experimental results.

Specimens	Direction	Yield		Peak		Ultimate		μ
		Py (kN)	Δy (mm)	Pp (kN)	Δp (mm)	Pu (kN)	Δu (mm)
HST-1	Compression	376.77	1.16	435.99	2.17	370.59	2.92	2.52
	Tension	−400.18	−1.00	−459.88	−3.48	−390.90	−4.05	4.05
CFST-2	Compression	1504.34	1.73	1549.62	2.08	1317.18	3.47	2.01
	Tension	−423.47	−1.05	−520.77	−4.70	−442.66	−4.48	4.27
CFST-3	Compression	1435.00	1.60	1504.00	2.02	1278.40	3.24	2.03
	Tension	−451.05	−1.02	−518.75	−3.55	−440.93	−4.57	4.48
CFST-4	Compression	1490.00	1.88	1684.08	2.04	1431.47	3.80	2.02
	Tension	−450.67	−1.07	−527.59	−2.66	−448.46	−4.94	4.62
CFST-5	Compression	1584.00	1.51	1622.56	2.07	1379.17	3.02	2.00
	Tension	−458.78	−0.98	−530.32	−2.79	−450.77	−4.24	4.33
CFST-6	Compression	1315.00	2.10	1443.29	2.58	1226.80	3.94	1.88
	Tension	−439.68	−1.79	−505.93	−5.02	−430.04	−8.00	4.47
CFST-7	Compression	1362.26	2.60	1409.79	2.84	1198.32	4.24	1.63
	Tension	−424.52	−2.28	−497.96	−6.99	−423.27	−7.08	3.11
HST-8	Compression	−451.98	0.96	471.77	2.61	−439.70	3.31	3.44
	Tension	−451.98	−0.82	−517.30	−2.55	−439.70	−4.33	5.28
CFST-9	Compression	1507.92	1.68	1535.50	2.38	1305.18	3.89	2.32
	Tension	−440.49	−0.89	−560.00	−2.51	−476.00	−4.85	5.45
CFST-10	Compression	1565.46	1.57	1634.76	1.86	1389.55	3.48	2.22
	Tension	−481.89	−0.88	−583.41	−2.53	−495.90	−4.73	5.38