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首页> 外文期刊>Journal of Constructional Steel Research >Static strength of doubler plate reinforced tubular T/Y joints under in-plane bending load
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Static strength of doubler plate reinforced tubular T/Y joints under in-plane bending load

机译：面内弯曲载荷作用下双板增强的T / Y型管状T / Y接头的静强度

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摘要

In the present paper, results of comprehensive finite element (FE) analyses performed on 210 generated models of T/Y-joints strengthened with doubler plate are presented. The results of FE models were validated against the data available from 12 experimental tests. These FE models investigate the effect of the doubler plate size and joint geometry on the static strength of doubler plate strengthened tubular T/Y subjected to in-plane bending (IPB) load. Afterwards, the ultimate capacity and deformed shapes of doubler plate and collar plate reinforced T and Y-joints are compared. Results indicated that the doubler plate can significantly enhance the initial stiffness, ultimate capacity, and considerably improve failure patterns of T-and Y-joints under IPB load. In spite of the remarkable difference between the static capacity of un-strengthened and doubler plate strengthened T-and Y joints subjected to IPB, the static strength of doubler plate strengthened T/Y-joints under IPB load has not been investigated so far and no design equation is available to calculate the ultimate strength of doubler plate reinforced T/Y-joints. For this reason, geometrically parametric study was followed by a set of nonlinear regression analyses to propose an ultimate capacity parametric formula for the static analyses of doubler plate strengthened tubular T/Y-joints subjected to IPB load.
机译：本文提出了对210个用双层板加强的T / Y接头生成的模型进行综合有限元分析的结果。有限元模型的结果已针对12个实验测试的可用数据进行了验证。这些有限元模型研究了承受平面内弯曲（IPB）载荷的双倍板尺寸和接头几何形状对双倍板增强管状T / Y静强度的影响。然后，比较了加强板和领板增强的T型和Y型接头的极限承载力和变形形状。结果表明，双层板可以显着提高初始刚度，极限承载力，并显着改善IPB载荷下T型和Y型接头的破坏模式。尽管承受IPB的未加强板和加强板的T型和Y型接头的静态承载力有显着差异，但到目前为止，尚未研究IPB载荷下加强板的T / Y型接头的静态强度，并且没有设计公式可用于计算双板增强的T / Y接头的极限强度。因此，在进行几何参数研究之后，进行了一组非线性回归分析，从而为承受IPB载荷的双板加强管状T / Y接头的静力分析提出了极限承载力参数公式。

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