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针对大跨度弧形闸门结构受力复杂且易发生弯曲变形和振动问题,采用有限元软件ANSYS对弧形闸门进行分析计算,对闸门主要部件的应力状态及变形情况进行了校核,分析了闸门自振频率的影响因素,全面评估了闸门的安全性能。并以目前国内跨度最大的某弧形闸门为研究对象,对不同工况下闸门的刚度和强度进行了计算,考虑流体与闸门之间的流固耦合作用,利用附加水体法分析了水体对闸门自振频率的影响,同时还研究了不同开度闸门自振频率变化情况。结果表明,弧形闸门总体强度和刚度满足设计要求,主要部件存在局部应力集中;水体作用使闸门的自振频率有一定程度的减小;随开度的增加,闸门的振动频率有不同程度的增加。
Aiming at the problem that the structure of long-span arc gate is subjected to complicated forces and prone to bending deformation and vibration, the finite element software ANSYS is used to analyze and calculate the radial gate. The stress state and deformation of the main components of the gate are checked, Influence factors of natural frequency, fully evaluate the safety performance of the gate. At the same time, taking a certain arc-shaped gate with the strongest span as the research object, the stiffness and strength of the gate under different conditions are calculated. Considering the fluid-solid coupling between the fluid and the gate, The natural frequency of the impact, but also studied the different degrees of opening gate natural frequency changes. The results show that the overall strength and stiffness of the radial gate satisfy the design requirements and the local components are concentrated in the main components. The natural frequency of the gate reduces to a certain extent with the action of the water body. With the increase of the opening degree, the vibration frequency of the gate has different degrees increase.