Compression Behavior of Doubler-Plate Reinforced Square Hollow Section T-Joints

Chang, Hongfei; Xia, Junwu; Zhang, Fengjie; Chang, Hong Suk

doi:10.18057/ijasc.2014.10.3.3

Cited by 4 publications

(11 citation statements)

References 15 publications

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“…However, further parametric studies also observed the failure of chord web buckling, especially for CPR SHS joints with a high β and τ2 ratio [19,20] . This is mainly due to the "over-reinforcement" effect of the collar plate for the chord flange, which has also been observed for DPR SHS T-joints [21,22] . Although both the above failure modes have been observed for CPR SHS joints under compressive load, their identification criteria is not yet clear, which brings uncertainties for the prediction of the joint strength.…”

Section: Introductionmentioning

confidence: 70%

“…To eliminate the effects of chord material properties and dimension, the normalized load-deformation curves are commonly used [2,4,21] , by which two dimensionless parameters are employed, as shown by Eq. (4) and Eq.…”

Section: Table 4 Parametric Matrix For Cpr Shs T-jointsmentioning

confidence: 99%

“…The results indicated that the stiffeners may change the effect of chord stress on the joint behavior, the existing CSFs for unreinforced joints are conservative for reinforced ones, and then new CSFs were proposed. The preliminary analysis by the authors [14] also indicated that the influence of chord stress on reinforced SHS joint is different from that of unreinforced ones.…”

Section: Introductionmentioning

confidence: 95%

“…However, the doubler plate and collar plate is only effective to reinforce the flange of the chord and thus is more advisable for SHS joints failure by chord flange yielding. For SHS joints failure by the buckling of the chord web, the sidewall plate [13] or L-shaped collar-plate [14] reinforcement is more suitable. The configurations of typical external plate reinforcements are shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

“…by Ozyurt et al [19] , Feng et al [20] , Chang et al [21] and Lima et al [22] to reduce the thickness of the doubler plate. For the compressive strength design of CPR SHS joints, the equations for DPR joints by EC3 [23] and CIDECT [24] were found unconservative and unsafe in some cases [19] .…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Compressive strength of collar plate reinforced SHS T-joints: Effect of geometrical parameters and chord stress ratio

Chang

Zuo

Yang

et al. 2020

Journal of Constructional Steel Research

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The collar plate (CP) is applicable for the reinforcement of both new designed and in-service joints, yet the design approach for the reinforcement requires further investigation. The current paper investigates the effect of various geometrical parameters as well as chord stress ratios on the compressive capacity of the collar plate reinforced (CPR) square hollow section (SHS) T-joints. The finite element (FE) models of the CPR SHS T-joints are built and validated using experimental data. Extensive parametric studies are carried out to evaluate the influence of parameters such as the brace to chord width ratio, the width/length and thickness of the CP, as well as the chord stress ratio. The brace to chord width ratio and the CP thickness are identified as the key parameters, and three typical failure modes are observed. Finally, bearing mechanism of CPR T-joints is discussed and design equations are proposed based on the failure modes. The failure-mode-based equations agree well with both parametric data and orthogonal analysis results, which provides reference for the practicing engineers.

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