Structural Efficiency of Internally Ring‐Stiffened Steel Tubular Joints

Experimental and numerical studies on the hot spot stress calculation method for welded CHS X-joints stiffened by internal ring stiffeners

“…When the applied load is relatively large and complex, especially in bridges, reinforcement measures are usually taken to enhance the static strengths of structural hollow section joints. The measures mainly consist of filling concrete (Packer, 1991, 1995; Tong et al, 2008), using fiber reinforced polymer (FRP) (Fam et al, 2006; Fu et al, 2016; Xiao and Zhao, 2012), setting steel stiffeners (Peng et al, 2022; Ramachandra Murthy et al, 1992; Thandavamoorthy et al, 1999) and other approaches. Recently, a bridge is being constructed in China employing tubular structures as arch ribs.…”

“…Setting stiffeners is an efficient way to increase the static strengths of welded tubular joints (Li et al, 2018; Van der Vegte et al, 1997; Willibald et al, 1999; Yang et al, 2018; Zhu et al, 2017), which also significantly affects the SCFs of the welded tubular joints (Salama, 1983). Ramachandra Murthy et al (1992) investigated the effects of internal ring stiffeners on the stress concentration of tubular T and Y-joints. It was found that the internally ring-stiffened tubular joints had less stress concentration than the unstiffened joints.…”

Effect of FRP Material Properties on Chord SCFs of an FRP-Strengthened Offshore Tubular T-Joint under Brace Axial Loading

“…Some of these strengthening techniques are reviewed by Lesani et al [15]. Ramachandra et al [16] presented formulae for the effect of geometric parameters on SCFs in ring stiffened T and Y-joints.. Nwosu et al [17] studied the stress distribution along the ring stiffened T-joints through analyzing the effect of geometry, location and number of stiffeners. SCF distributions along the intersections of a T-joint reinforced with doubler plate subjected to the action of combined loadings was investigated by Hoon et al [18].…”