自浮升降式航标的运动特性分析

Motion characteristics analysis of self-floating lift navigation mark

为适应三峡库区大水位变幅,解决岸标布置和高度调整等问题,提出了一种新型的自浮升降式航标。针对结构设计和环境荷载等因素对该新型航标运动特性的影响问题,采用MOSES(multi-operational structural engineering simulator)建立了三维水动力分析模型,研究不同吃水、不同水深下结构在波浪和风浪流荷载作用下的垂荡运动响应。结果表明:1)吃水增加对改善结构的运动响应是有限的,该结构在吃水1.0 m时运动特性最优;2)水深越大,结构的运动响应特性越佳;3)风浪流作用下的运动特性优于波浪作用下的运动特性。

To solve the layout and height adjustment of shore beacon suitable for large variation of water level in the Three Gorges reservoir area,a novel type of self-floating lift navigation mark is proposed.Aiming at the influence of structural design and environmental load on motion characteristics of this navigation mark,a 3-D hydrodynamic model based on MOSES(multi-operational structural engineering simulator)is developed,and the heave responses of the structure under wave action and combined action of wind,wave and current are studied with different drafts and depths.The results show:1)Improving the motion responses by the increase of draft is limited.The motion characteristics of the structure are optimal at 1.0 m draft.2)The greater the water depth,the better the motion characteristics.3)The motion characteristics under the combined action of wind,wave and current are better than those under the action of wave.