升船机顶部机房鞭梢效应分析与研究

Analysis and Research on Whipping Effect of Top Engine Room of Ship Lift

以某升船机为例,建立三维有限元模型,研究升船机塔柱顶部机房在地震工况下的鞭梢效应,并通过算例研究顶部机房顶棚桁架对机房侧墙鞭梢效应的影响。结果表明,地震工况下,塔柱顶部机房鞭梢效应明显;顶棚桁架结构相当于一个屋顶花园TMD系统,桁架的大变形和铰接摩擦作用能较大的减弱顶部机房侧墙的动力响应。

Taking a ship lift as an example,this paper establishes a three-dimensional finite element model to study the whipping effect of the engine room on the top of the ship lift tower column under seismic conditions.The influence of roof truss of top computer room on whipping effect of side wall of computer room is studied by an example.The results show that the whipping effect of the engine room on the top of the tower column is obvious under the seismic condition.The roof truss structure is equivalent to a roof garden TMD system.The large deformation and articulated friction of the truss can greatly reduce the dynamic response of the side wall of the top computer room.