考虑止水位置的平面钢闸门应力有限元分析

目前关于闸门止水系统布置在上游面还是下游面，一般全凭经验决定，缺少数据支撑。以某水利工程平面钢闸门为实例建立有限元模型，应用ANSYS软件对比前、后两种止水方式下平面闸门各构件的应力分布及主横梁的挠度变形。结果表明：闸门构件应力满足强度要求，部分小范围内存在应力集中现象；采用后止水时闸门面板应力分布均匀，主横梁抗变形能力强，且边梁的最大折算应力值较小，其它构件在两种止水方式下的静力特性无显著差异。分析成果可为类似工程止水布置以及闸门设计提供参考。

Finite element analysis of plane steel gate stress considering two different water seal positions

Arranging water seal on the upstream or downstream side of the gate is usually decided by designers′ experience but without data support. In this paper, the finite element model of plane steel gate of a water conservancy project was established. Considering different water seal positions, the stress distribution of the gate members and deflection of main beam were compared by ANSYS software. The results showed that the stress of the gate member can meet the strength requirement, and the stress concentration existed in a small range. When water seal was arranged on the downstream side of the gate, the stress distribution of the gate face plate was more uniform, the deformation resistance of the main beam was strong, and the maximum converted stress value of the side beam was small. There was no significant difference in the static characteristics of the other members in the two water seal positions.