梁端处悬臂板的受力分析与设计探讨

The Discussion on Force Analysis and Design of Cantilever Slab at Girder End

结合梅市口路永定河大桥上部主梁设计,通过有限元软件Midas Civil对悬臂长度比较大的悬臂板进行仿真分析,同时通过与现行规范进行比较,掌握不同加载位置悬臂根部弯矩差别及其与常规计算结果的差别,并通过合理的布筋或结构措施,确保梁端悬臂板的结构受力安全。

Combined with the design of girder at the upper part of Yongding River Bridge in Meishikou,this paper had done simulation analysis on cantilever slab with bigger cantilever length by finite element software Midas Civil. Meanwhile, the differences of bending moment at the root of cantilever in different loading position and its difference from conventional calculation result have been grasped through comparison with current standard. The safety of structural force for girder-end cantilever slab could be guaranteed by virtue of rational placement of reinforcement bar or structural measures.