CHS X-joints strengthened by external stiffeners under brace axial tension

Ding, Yunan; Zhu, Lei; Zhang, Kuang; Bai, Yu; Sun, Hailin

doi:10.1016/j.engstruct.2018.05.101

Cited by 28 publications

(1 citation statement)

References 19 publications

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“…They suggested using the outer plates with an equal width and length. Also, Ding et al [4] experimentally showed that the plate can considerably increase the strength of the X-joint under tensile load. Zhu et al [5] showed that the outer plate can remarkably increase the strength of T-joints subjected to compression.…”

Section: Tubular Joints Reinforced With the Outer Platementioning

confidence: 99%

Static Strength of Tubular K-Joints Reinforced with Outer Plates under Axial Loads at Ambient and Fire Conditions

Nassiraei,

Yara

2023

Metals

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In this paper, the effect of the outer reinforcing plate on the initial stiffness, ultimate strength, and failure mechanisms of tubular K-joints under axial load at ambient and different fire conditions is evaluated. In the first phase, a finite element (FE) model was generated and verified by 13 experimental tests. In the next step, 1057 numerical models were generated. In these models, the welds joining the chord and braces were modeled. Using the produced FE models, the structural behavior under ambient and different elevated temperatures (20, 150, 300, 450, 600, 750, and 900 °C) was evaluated. The results showed that the outer plate can enhance the ultimate strength by up to 319% under fire conditions. Despite the considerable effect of the outer plate on the stiffness, ultimate strength, failure modes, and the frequent usage of the K-joints in tubular structures, the static response of the reinforced K-joints at ambient and elevated temperatures has not been studied. Hence, according to the extensive parametric studies, a highly precise practical design equation has been proposed based on the yield volume model for determining the ultimate strength.

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Section: Tubular Joints Reinforced With the Outer Platementioning

confidence: 99%