The effects of weld size on the ultimate capacity of a Double-Tee (DT)tubular joint under brace axial compression, in-plane bending (IPB) and out-of-plane bending (OPB), have been assessed using the general purpose finite element program ABAQUS. Non-linear effects have been included in the modelling. Three models were created for this study: one model without the weld and the other two with welds of different sizes. The resutls suggest that the joint ultimate load carrying capactities are influenced significantly by the weld sizes. The predicted bending strengths are generally higher than the lower bound or characteristic strength values calculated from API RP 2A and DEn rules, respectively.
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机译：使用通用有限元评估了在支撑轴向压缩，平面内弯曲（IPB）和平面外弯曲（OPB）下，焊缝尺寸对双三通（DT）管状接头的极限承载力的影响。元素程序ABAQUS。非线性效应已包含在建模中。为此研究创建了三个模型：一个模型没有焊缝，另外两个模型有不同尺寸的焊缝。结果表明，接头的最终承载能力受焊接尺寸的影响很大。预测的弯曲强度通常高于分别根据API RP 2A和DEn规则计算的下限或特征强度值。
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