Abstract: The differential equation of ship motion is built to study the motion of the mooring positioning engineering floating crane under the combined forces of wind, wave and current. The ship motion is numerically simulated to obtain the ship motion response corresponding to the wave parameters and analyzes the wave direction sensitive to the ship response, in order to provide the foundation for the floating crane hoisting work. The results show that a large surge occurs for the floating crane in head sea and following sea, and a large sway occurs in beam sea. However, the overall amplitude of the ship response is small in oblique sea. The oblique waves should be adopted as far as possible for the floating crane under the hoisting operation, in order to avoid too large motion response that affects hoisting. At the same time, the increase of the mooring force can effectively reduce the displacement of the floating crane.

Key words: engineering floating crane, anchor mooring positioning, motion response, numerical calculation

摘要： 为考察在风浪流的联合作用下,锚泊定位的工程浮吊的运动,拟建立船舶运动微分方程模型,采用数值模拟方法对船舶运动进行仿真,得到对应波浪参数的船舶运动响应,并分析船舶响应敏感的波浪方向,为浮吊吊装工作提供依据。结果表明在浮吊在迎浪、随浪工况下,出现了较大的纵荡位移;在横浪工况下出现了较大的横荡位移。但是在斜浪工况,船体总体响应幅值不大。浮吊在吊装工况下应该尽量采用斜浪,避免过大的运动响应,影响吊装;同时增加系泊力可以有效的减小浮吊位移。

关键词: 工程浮吊, 锚泊定位, 运动响应, 数值计算