Abstract In this paper, the stress concentration factors (SCFs) in tubular T/Y-joints reinforced with fiber reinforced polymer (FRP) are investigated. A total of 134 3-D FE models was generated and analyzed under compressive load. The effect of FRP layers and joint geometry on the SCFs and the SCF ratio of the reinforced to the unreinforced joints were investigated through a parametric study. Results showed that the SCF of an FRP reinforced T/Y-joint can be down to 34% of the SCF of the corresponding unreinforced joint. Also, two parametric formulas were proposed for determining the SCFs in T/Y-joints reinforced with FRP.

中文翻译：

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海上结构中受压载荷的 FRP 加固管状 T/Y 接头的应力集中系数

摘要 在本文中，研究了用纤维增强聚合物（FRP）增强的管状T/Y 接头中的应力集中系数（SCF）。在压缩载荷下生成和分析了总共 134 个 3-D 有限元模型。通过参数研究研究了 FRP 层和接头几何形状对 SCF 的影响以及增强与未增强接头的 SCF 比率。结果表明，FRP 加固 T/Y 接头的 SCF 可以降低到相应未加固接头 SCF 的 34%。此外，还提出了两个参数公式来确定用 FRP 加固的 T/Y 接头中的 SCF。