起重机偏轨梁腹板局部压应力分布规律研究

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Considering various factors regarding general or special tracks in different models mainly used for cranes and different load locations such as mid-span or end-span, the finite element method is used to get local stress distribution on the rail and web edges. Through secondary fitting, a calculation formula regarding the distribution law of local stress on web upper edges along the centerline direction is provided, which is compared with the formula given by crane design specification, providing referenced basis for the girder strength calculation.考虑起重机常用的通用或专用各种型号轨道和跨中或跨端不同承载位置等多种影响因素，采用有限元方法获得了轨道与腹板上边缘的局部应力分布情况。通过二次拟合，给出了腹板上边缘局部压应力在轨道中心线方向分布规律的计算公式，并与起重机设计规范的公式作了比较，为主梁强度计算提供了可参考的依据。