Trapezoidal corrugated web girder is widely used. The elastic shear buckling stress is an important parameter in the design and calculation of trapezoidal corrugated web girder. Accordingly, much research has been devoted on the analysis of typical elastic global shear buckling, elastic local buckling and elastic interactive shear buckling, and the corresponding formulae existing in a variety of literature. The results of finite element analysis suggest that there is a certain deviation in the calculated values based on classical elastic shear buckling formulae. The boundary conditions of corrugated web play an important role in the calculation of elastic shear buckling. And it is found that the shear buckling modes of the actual trapezoidal corrugated web may be called the atypical buckling, which is different from typical local buckling, global buckling and interactive buckling. The existence of the atypical buckling may result in some calculation deviations for the existing formulae of elastic shear buckling. Based on the classical elastic shear buckling formulae, a generalized formula for elastic shear buckling of trapezoidal corrugated web girder is obtained by numerical simulation. It intuitively reflects the relationships among various buckling modes. The formula has high calculation reference value and will promote the research of elastic shear buckling of trapezoidal corrugated web girder.

梯形波纹腹板梁被广泛使用。弹性剪切屈曲应力是梯形波纹腹板梁设计和计算的重要参数。因此，已经进行了大量的研究来分析典型的弹性整体剪切屈曲，弹性局部屈曲和弹性相互作用剪切屈曲，以及各种文献中存在的对应公式。有限元分析结果表明，基于经典弹性剪切屈曲公式的计算值存在一定偏差。波纹幅材的边界条件在弹性剪切屈曲的计算中起着重要作用。并且发现实际梯形瓦楞纸幅的剪切屈曲模式可以称为非典型屈曲，这与典型的局部屈曲不同，整体屈曲和交互式屈曲。对于弹性剪切屈曲的现有公式，非典型屈曲的存在可能导致一些计算偏差。基于经典的弹性剪切屈曲公式，通过数值模拟得到了梯形波纹腹板梁弹性剪切屈曲的通用公式。它直观地反映了各种屈曲模式之间的关系。该公式具有较高的计算参考价值，将促进梯形波纹腹板梁弹性剪切屈曲的研究。通过数值模拟得到了梯形波纹腹板梁弹性剪切屈曲的通用公式。它直观地反映了各种屈曲模式之间的关系。该公式具有较高的计算参考价值，将促进梯形波纹腹板梁弹性剪切屈曲的研究。通过数值模拟得到了梯形波纹腹板梁弹性剪切屈曲的通用公式。它直观地反映了各种屈曲模式之间的关系。该公式具有较高的计算参考价值，将促进梯形波纹腹板梁弹性剪切屈曲的研究。