Ak. Soh et al., STRESS-ANALYSIS OF REINFORCED TUBULAR JOINTS SUBJECTED TO DIFFERENT LOAD TYPES, Proceedings of the Institution of Civil Engineers. Structures and buildings, 104(3), 1994, pp. 257-266
Citations number
17
Categorie Soggetti
Engineering, Civil","Construcion & Building Technology
The reinforcing of tubular joints using doubler plates has been a comm
on industrial practice as a last minute solution to resolve punching s
hear problems due to axial compression. However, such reinforcements m
ay have negative effects when the joints are subject to different load
ing conditions. A parametric stress analysis of T reinforced welded ro
und-to-round tubular joints subjected to axial tension and in-plane be
nding has been performed using the finite-element technique. Sixteen s
ets of geometric parameters were used for the parametric study by vary
ing three parameters: doubler plate to chord thickness ratio t(p)/T; b
race diameter to doubler plate length (width) ratio d/l(p); and brace
to doubler plate thickness ratio t/t(p). The said study shows that t(p
)/T and t/t(p) but not d/l(p) have significant effects on stress conce
ntration factors in both load cases. The present results for T reinfor
ced tubular joints are compared with those for the corresponding unrei
nforced joints obtained by the Authors and other researchers. In gener
al, the reinforced joints are as good as the corresponding unreinforce
d joints in withstanding axial tension and in-plane bending, provided
that certain criteria for the selection of doubler plates are adopted.
Although out-of-plane bending is not considered in the present study,
the influence of various geometric parameters are expected to show tr
ends similar to those observed for axial tension and inplane bending.