In the connection design of steel structure, the shear plate with high-strength bolt connection is extensively used at the flexible joint where the beam is connected to the weak axis of the column.
The results showed that most multiaxial fatigue cracks were initiated and propagated along the direction of maximum shear plane or on the direction perpendicular to the tubular specimen's axis.
研究表明，多轴疲劳裂纹主要是沿最大剪切平面或垂直于管形试样的轴线方向扩展。
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Radial stress, axis stress and shear stress at the critical interface regions are obtained and compared.