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本文根据闸门在水体中振动的特性,对闸门振动时所受的随动水体的附加质量力和粘性阻尼力进行了分析.由于闸门动力特性与闸门本身的结构特性,支座方式,起吊机构的特性,在闸门槽中的紧固程度及闸门面板的水平倾角等有关,在计算闸门水上,水下的自振频率时,视县体情况分别将门体简化成刚性体或平面(空间)弹性刚架.根据上述原理、编制了相应程序.实例计算表明,附加质量力对水下闸门的自振频率有明显的影响.
In this paper, according to the characteristics of gate vibration in water body, the additional mass force and viscous damping force of the following water body subjected to vibration are analyzed.Because the dynamic characteristics of the gate and the structural characteristics of the gate itself, the bearing mode, the lifting mechanism Characteristics, the degree of tightening in the gate slot and the horizontal inclination of the gate panel, etc. When calculating the natural and underwater natural frequency of the gate, the gate body is reduced to rigid body or plane (space) According to the above principle, the corresponding program has been compiled.Example calculation shows that the additional mass force has obvious influence on the natural frequency of underwater gate.