This study aims at clarifying the combined effect of different geometric parameters on the fatigue strength of longitudinal welded gusset joints. Statistical reanalyses with an up-to-date database for this detail were thus carried out on larger parameter ranges, first on as-welded joints, including also loading, weld detailing, steel grade, and R-ratio. The results showed that the combined effect of gusset length, main plate width and thickness significantly affects the characteristic values and a relationship is proposed. With this basis, analyses are then performed on high frequency mechanical impact (HFMI)-treated joints and an accurate assessment of the improvement effect is proposed.

本研究旨在阐明不同几何参数对纵向焊接角撑板接头疲劳强度的综合影响。因此，在较大的参数范围内，首先在焊接接头上，包括载荷，焊接详图，钢种和R比，使用最新的数据库对该细节进行了统计重新分析。结果表明，角撑板长度，主板宽度和厚度的综合影响显着影响特征值，并提出了一种关系。在此基础上，然后对高频机械冲击（HFMI）处理的接头进行分析，并提出对改善效果的准确评估。