论桥头搭板长度、厚度、配筋设计

Discussion on Design of Length,Thickness and Reinforcing Bars of Bridge End Transition Slab

对于桥头搭板长度、厚度的设置,规范没有具体地给出计算方法,致使各地在设计桥头搭板时缺少统一性。推荐根据桥头填土高度计算路堤破棱体长度,并使桥头搭板长度大于破棱体长度2m进行设计,更具有科学性和安全性。列出了桥头搭板长度的计算实例,推荐了搭板厚度和搭板配筋等,可为桥头搭板设计提供参考。

As for setting of length and thickness of bridge end transition slab, calculation methods are not given in this specification in detail. Therefore, the design of bridge end transition slabs in various regions lacks uniformity. It is recommended to calculate the length of failure wedge of embankment according to filling height of bridge end, and design to let the length of bridge end transition slab be 2m longer than that of failure wedge, with scientificity and safety. The calculation examples for length of bridge end transition slab are listed, and thickness and reinforcing bars and so on of transition slab are recommended, so as to provide reference for the design of bridge end transition