Experimental Study of Composite Members in Spatial Grid Structure Subjected to Ultralow-Cyclic Axial Force

Table 2

Geometrical parameters of specimen corresponding to Figure 2.

Group ID	Quantity	End cone (mm)					Bolt-sphere (mm)			High-strength bolt (mm)							Sleeve (mm)					Steel tube (mm)
		l1	l2	l3	t1	d1	l4	d2	d3	l5	l6	l7	l8	d4	d5	t2	l9	l10	d6	d7	R	l	D
S24	54	6	48	18	16	25	30	24	78.5	82	24	18	30	36	24	15	10	40	45.2	41	12.5	1826	88.5
S27	54	6	44	20	20	28	33	27	78.5	90	28	20	33	41	27	17	10	40	50.9	46	14.0	1826	88.5
S30	54	6	44	19	20	31	35	30	78.5	98	28	24	37	46	30	18.7	10	45	55.6	50	15.5	1816	88.5