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首页> 外文期刊>Ocean Engineering >Local joint flexibility of CHS T/Y-connections strengthened with collar plate under in-plane bending load: Parametric study of geometrical effects and design formulation
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Local joint flexibility of CHS T/Y-connections strengthened with collar plate under in-plane bending load: Parametric study of geometrical effects and design formulation

机译：在平面内弯曲载荷下用领板加强的CHS T / Y型连接的局部接头柔性：几何效应和设计公式的参数研究

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摘要

In this paper, the Local Joint Flexibility (LJF) of the tubular T/Y-connections strengthened with collar plate under in-plane bending (IPB) load was investigated and compared to the LJF of the corresponding un-strengthened connections. In the first step, a finite element (FE) model was developed and validated against the results of experimental tests conducted in the present author's previous study, experimental tests carried out by other researchers, and available parametric equations. Afterward, a total number of 168 3-D finite element (FE) models were generated to investigate the effect of the connection geometry (beta, gamma, and tau), the angle between brace and chord (theta), and the collar plate size (eta, tau(c)) on the LJF factor (f(LJF)). Results showed that the increment of the eta, tau(c), beta, tau, and the reduction of the theta and gamma result in the decreases of the f(LJF). Also, the f(LJF) of a collar plate strengthened T/Y-connection can be down to 29% of the f(LJF) of the corresponding un-strengthened connection. Finally, FE results were used to propose a parametric formula for determining the f(LJF) of T/Y-connections strengthened with collar plate subjected to IPB load. Also, the proposed formula was checked according to the UK DoE acceptance standard.
机译：在本文中，研究了在平面内弯曲（IPB）载荷下用领板加强的管状T / Y连接的局部接头挠性（LJF），并将其与相应的未加强连接的LJF进行了比较。第一步，开发了有限元（FE）模型，并根据本作者先前的研究中进行的实验测试，其他研究人员进行的实验测试以及可用的参数方程式对它们进行了验证。之后，生成了总数为168的3-D有限元（FE）模型，以研究连接几何形状（β，γ和tau），支撑和弦与弦之间的夹角（θ）以及领板尺寸的影响LJF因子（f（LJF））上的（eta，tau（c））。结果表明，eta，tau（c），β，tau的增加以及theta和gamma的减少会导致f（LJF）的减少。同样，加强型T / Y连接的衬板的f（LJF）可以降低到相应未增强连接的f（LJF）的29％。最后，有限元结果被用来提出一个参数公式来确定承受IPB载荷的T / Y型连接的F / L连接的f（LJF）。此外，根据英国能源部的验收标准对提议的公式进行了检查。

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