Mechanical Behavior of High-Strength Bolted Joints Fabricated from Fire-Resistant Steel at Elevated Temperatures

Table 5

Experimental results of specimen bearing capacity.

Type of high-strength bolts	Specimen numbers	Temperature T (°C)	(kN)		(kN)
Fire resistant	A1	20	633.70	1.00	229.70	1.00
	B1	200	593.60	0.94	363.55	1.58
	C1	400	603.15	0.95	332.60	1.45
	D1	600	411.10	0.65	102.65	0.45
	E1	700	249.30	0.39	33.60	0.15
	A3	20	611.80	1.00	150.2	1.00
	B3	200	604.80	0.99	281.25	1.87
	C3	400	562.75	0.92	324.55	2.16
	D3	600	428.00	0.70	186.45	1.24
	E3	700	258.85	0.42	47.45	0.32
Ordinary	A2	20	633.10	1.00	218.10	1.00
	B2	200	595.40	0.94	370.80	1.70
	C2	400	581.20	0.92	226.60	1.04
	D2	600	241.50	0.38	34.75	0.16
	E2	700	128.45	0.20	12.55	0.06
	A4	20	643.30	1.00	295.10	1.00
	B4	200	622.05	0.97	316.10	1.07
	C4	400	592.60	0.92	420.80	1.43
	D4	600	229.40	0.36	36.00	0.12
	E4	700	125.95	0.20	9.90	0.03