以某钢桥箱梁采用分离式U型箱断面为例,采用有限元软件ANSYS选取钢桥面板宽度6.9m,长9m模型进行桥面铺装前(裸板)的横向和纵向在不利位置进行加载计算分析。通过对此钢桥面板的有限元受力分析表明:1)在横向不同加载位时,横向拉应力为主要控制荷载;2)在纵向不同加载位时,跨中弯矩最大,靠近横隔板逐渐减小。进而以后的钢桥设计提供一定意义的参考。 Taking a steel box girder with separate U-shaped box section as an example, finite element software ANSYS was used to select the steel bridge panel width of 6.9m, the length of 9m model before the bridge deck pavement (bare board) horizontal and vertical in the unfavorable position Load calculation analysis. The finite element analysis of the steel bridge deck shows that: 1) the transverse tensile stress is the main control load in the case of different transverse loading points; 2) the moment in the middle span is the largest, close to the transverse bulkhead slowing shrieking. And then the steel bridge design to provide some sense of reference.