Strength and rotational response of moment connections to tubular columns using flowdrill connectors

摘要: Abstract Using the flowdrill process it is possible to form threaded holes in steel tubes even with wall thicknesses less than 12 mm. Ordinary bolts may then be used secure endplate beam connections tubular columns. A series of tests was conducted investigate strength and rotational stiffness characteristics joints made this way. The results described on both thick flush endplates extended show that strengths approaching plastic capacity supported large capacities can obtained. Deformation tube face gives excellent ductility but have relatively low for a nominally rigid joint. Connections type are ideally suited use semi-rigid design methods.