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为探寻弧形钢闸门在静水压力作用下未开启状态的应力及变形规律,并在此基础上探寻改良优化措施以保障闸门运行安全,通过ABAQUS软件对某水库弧形钢闸门进行三维有限元应力、变形分析,由闸门在静水压力作用下应力及变形分布规律,得出面板及主横梁—支臂接缝处存在较大应力区。为此,从改善截面属性角度出发,针对主横梁—支臂接缝处应力集中现象提出加厚支臂及加角钢两种工程处理方式,发现闸门支臂最大应力区向支座处上移及整体应力减小现象,由此可得两种工程处理方式均能有效改善闸门支臂受力情况并保障工程安全,但从施工操作及改善效果而言,推荐采用加角钢的方式对闸门进行局部处理。
In order to explore the stress and deformation law of the arc-shaped steel gate in the unopened state under hydrostatic pressure, and based on this, to find out the improvement and optimization measures to ensure the safety of the gate operation, the three-dimensional finite element stress of a reservoir arc-shaped steel gate was simulated by ABAQUS software , Deformation analysis, the stress and deformation distribution of the gate under hydrostatic pressure, the conclusion is drawn that there is a large stress area in the joints of the panel and the main beam-arm. Therefore, from the point of view of improving the cross-section properties, aiming at the stress concentration phenomenon at the main beam-arm joint, thickening arm and angle-increasing steel are proposed. It is found that the maximum stress zone of the arm of the gate moves up to the support and The overall stress reduction phenomenon, which can be two kinds of engineering approach can effectively improve the gate arm force situation and to ensure the safety of the project, but from the construction operations and improve the effect, it is recommended to add the angle of the gate way to local deal with.