In order to study the bearing capacity of flap gate under impact load, this paper uses the finite element calculation model to calculate the bending and shear resistance of the buttress of the flap gate under the design model, and designs the reinforcement amount of the section to study the bearing capacity of the flap gate under the impact load. The research result shows that the impact load controls the bearing capacity of the pier section, and the reduction of impact load can effectively alleviate the stress concentration at the corner of the pier. It is necessary to reconfigure the appropriate tension and compression reinforcement, but the stirrup and diagonal reinforcement do not need to be reconfigured.

为研究翻板闸门在冲击荷载作用下的承载能力，本文采用有限元计算模型，在设计模型下计算翻板闸门支撑的抗弯抗剪能力，设计截面配筋量为研究了翻板闸门在冲击载荷下的承载能力。研究结果表明，冲击荷载控制着桥墩断面的承载力，冲击荷载的降低可以有效缓解桥墩拐角处的应力集中。需要重新配置合适的拉压配筋，但箍筋和斜筋不需要重新配置。