Abstract:This paper presents the experimental studies of two partially overlapped CHS K-joints specimens (Specimens S1 and S2) with through brace subjected to basic and combined loads. The stress analysis of the joints revealed the maximum stress concentration factor (SCF) to be located on the brace side. Then, the maximum SCF was compared with existing Efthymiou's formulae. It is observed that the Efthymiou's formulae are over-conservative in in-plane bending load case (IPB), but in axial load case (AX) are not conser… Show more
“…Similarly, IPB1 and IPB2 are, respectively, the corresponding inplane bending (IPB) loads applied at the ends of the through and the overlap braces. It should be noted that the directions of the IPB1 and IPB2 load cases are selected such that maximum SCF shall be induced at the weld toe along the brace-chord intersection curve [10]. For the corresponding gapped joints, due to symmetry, only the AX1 and IPB1 load cases were applied at the end of one of the brace.…”
Section: Comparison Of the Maximum Scf Under Different Basic Loading mentioning
confidence: 99%
“…However, as they were found to be not conservative for the AX loading case [10,17,26], they were not adopted in this study. In order to obtain reliable SCF for partially overlapped CHS Kjoints, a special automatic mesh generation procedure developed by Nguyen et al [17,27,28] was employed to create well graded 3D solid finite element meshes including welding details (Fig.…”
Section: Calculation Of Scf For Partially Overlapped Chs K -Jointsmentioning
confidence: 99%
“…[2] for the gapped joints and Refs. [10,17] for the partially overlapped joints. However, by analyzing the HSS obtained from the two joint types, it was found that when the joints were subjected to the basic load of AX1 = 200 kN, all HSS occurred on the chord side for the gapped joint.…”
Section: Comparison Of Hssmentioning
confidence: 99%
“…Their equations were verified experimentally by Dharmavasan and Seneviratne [9] using scaled down acrylic models and it was found that overlapping may help to reduce the chord SCF. However, a recent study by Sopha et al [10] during full scale testing found that Ethymiou's formulae [8] are conservative only when the joints were subjected to in-plane bending loading, but not for the case of axial loading. In addition, it was also found that the HSS may be located on the brace side of the joint and this agreed with the observations by Moe [11].…”
“…Similarly, IPB1 and IPB2 are, respectively, the corresponding inplane bending (IPB) loads applied at the ends of the through and the overlap braces. It should be noted that the directions of the IPB1 and IPB2 load cases are selected such that maximum SCF shall be induced at the weld toe along the brace-chord intersection curve [10]. For the corresponding gapped joints, due to symmetry, only the AX1 and IPB1 load cases were applied at the end of one of the brace.…”
Section: Comparison Of the Maximum Scf Under Different Basic Loading mentioning
confidence: 99%
“…However, as they were found to be not conservative for the AX loading case [10,17,26], they were not adopted in this study. In order to obtain reliable SCF for partially overlapped CHS Kjoints, a special automatic mesh generation procedure developed by Nguyen et al [17,27,28] was employed to create well graded 3D solid finite element meshes including welding details (Fig.…”
Section: Calculation Of Scf For Partially Overlapped Chs K -Jointsmentioning
confidence: 99%
“…[2] for the gapped joints and Refs. [10,17] for the partially overlapped joints. However, by analyzing the HSS obtained from the two joint types, it was found that when the joints were subjected to the basic load of AX1 = 200 kN, all HSS occurred on the chord side for the gapped joint.…”
Section: Comparison Of Hssmentioning
confidence: 99%
“…Their equations were verified experimentally by Dharmavasan and Seneviratne [9] using scaled down acrylic models and it was found that overlapping may help to reduce the chord SCF. However, a recent study by Sopha et al [10] during full scale testing found that Ethymiou's formulae [8] are conservative only when the joints were subjected to in-plane bending loading, but not for the case of axial loading. In addition, it was also found that the HSS may be located on the brace side of the joint and this agreed with the observations by Moe [11].…”
“…Furthermore, having compared the results of overlapped and gapped CHS K-joints, Gibstein [30] Efthymiou and Durkin [29] had published some formulae but they were not adopted in the EC3 [27]. Furthermore, not many full scale testing results related to the SCF and the HSS values for partially overlapped CHS K-joints were reported [64][65][66][67][68][69].…”
Ng S. J. for their assistances in the testing of the specimens. Finally, the author wishes to express his appreciation to his wife, daughter and son for their love, concern, selfless and diligent support to effect the completion of this work.
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