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首页> 外文期刊>International Journal of Fatigue >Fatigue of web-flange weld of corrugated web girders: 1. Influence of web corrugation geometry and flange geometry on web-flange weld toe stresses
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Fatigue of web-flange weld of corrugated web girders: 1. Influence of web corrugation geometry and flange geometry on web-flange weld toe stresses

机译:波纹腹板腹板腹板焊接疲劳:1.腹板波纹几何形状和法兰几何形状对腹板法兰焊接趾趾应力的影响

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摘要

The fatigue performance of the web-flange weld of steel girders with trapezoidal corrugated webs was examined experimentally, using large-scale girder specimens, and analytically. The focus was on a region of constant bending moment. Fatigue cracks initiated at many points along the inclined folds, and then propagated perpendicular to the principal stress direction. Propagation of cracks initiating near the end of the inclined folds led to failure. Parametric FEM analyses indicated that the corrugation angle and the bend radius at the fold lines of the corrugations are the parameters that most influence the stress at the web-flange weld toe.
机译:梯形波纹腹板钢腹板腹板-法兰焊接的疲劳性能通过大型梁试件进行了实验研究,并进行了分析。重点是恒定弯矩的区域。疲劳裂纹在沿倾斜褶皱的许多点处开始,然后垂直于主应力方向传播。在倾斜折痕末端附近开始的裂纹扩展导致破坏。参数有限元分析表明,波纹角和波纹折线处的弯曲半径是最影响腹板-法兰焊趾处应力的参数。

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