一、前言偏轨箱形梁横隔板是一个主要受力构件.它本身的几何参数以及与腹板和翼缘间的焊缝布置,将直接影响偏轨箱形梁的疲劳强度,换句话说,将直接影响偏轨箱形梁的使用寿命.为此,除了要计算横隔板强度与稳定外,还必须对横隔板本身的参数,焊缝的大小与分布进行合理选择与设计.目前我国生产的起重机偏轨箱形梁横隔板及其连接,大都采用图1的型式. I. Introduction Deviating box girder diaphragm is a main force component.Its own geometric parameters and the weld between the web and the flange arrangement will directly affect the fatigue strength of the box girder deviation, In other words, in addition to the calculation of the strength and stability of the diaphragm, the parameters of the diaphragm itself, the size and distribution of the weld must be properly selected and designed. At present, China’s cranes rail box-shaped beam diaphragm and its connection, most of the use of Figure 1 type.