Research Article

Experimental Study on Variable-Amplitude Fatigue of Welded Cross Plate-Hollow Sphere Joints in Grid Structures

Table 3

Geometrical characteristics of the constant-amplitude fatigue specimens (unit: mm).

Specimen labelTested numberConnection type

KQ-43Butt weld
KQ-56Butt weld
KQ-62Butt weld
KQ-77Fillet weld
KQ-81Fillet weld

Note. , diameter of welded hollow sphere; , thickness of sphere; , diameter of steel tube; , thickness of steel tube; , width of crossed plate; , thickness of crossed plate; , limit strength ratio of steel tube welded sphere and cross plate welded sphere.