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

Table 4

Size and bearing capacity of the butt weld.

Group	(mm)	(mm)	(MPa)	[] (kN)	DF (kN)	SF
Diagonals C-3 and C-2 or C-1	16	70	250	280	85	3.3
Diagonals C-3 and C-4	16	45	250	180	85	2.1
Vertical members C-3 and C-2 or C-1	16	40	250	160	37.5	6.7

: weld thickness; : length of weld leg; : tensile strength of butt weld; []: bearing capacity of fillet weld; DF: designed internal force; SF: safety factor.