闸墩下游侧变宽大牛腿结构设计

Design of Widened Corbel Structure on the Downstream Side of Gate Pier

为了在某水电站拱坝的溢流表孔上布置交通桥,需要在溢流表孔闸墩的下游侧设置变宽大牛腿结构,向下游侧悬挑4.08 m,牛腿根部高6.18 m,平面宽度0.94~1.40 m。结合现行规范和工程实际情况,针对变宽大牛腿结构的设计作了探讨。

In order to arrange a traffic bridge on the overflow surface hole of an arch dam of a hydropower station, it is necessary to set a widened corbel structure on the downstream side of the overflow surface hole gate pier, with a cantilever of 4.08 m on the downstream side, a height of 6.18 m at the root of the corbel and a plane width of 0.94 ~1.40 m. Combined with the current code and the actual situation of the project, this paper discusses the design of the widened corbel structure.