Research on the Mechanical Properties of a Glass Fiber Reinforced Polymer-Steel Combined Truss Structure

Table 3

Size and bearing capacity of the joints.

Type	NT	DT (mm)	WT (mm)	(kN)	TT (mm)	TS (mm)	PN	CC (kN)	DF (kN)
C-1	5	2	12	60	8	8	3	600	250
C-2	3	2	12	30	8	8	3	300	85
C-3	3	2	12	30	8	8	2	300	37.5
C-4	3	2	12	30	8	8	2	300	85

NT: number of teeth; DT: depth of tooth; WT: width of tooth; : preload; TT: thickness of the inner steel tube; TS: thickness of the outer sleeve; PN: pair number of lugs; CC: carrying capacity; DF: designed internal force.