摘要
基于细长体理论,将桥墩视为绝对静止船舶,针对会遇(船舶顺流驶经桥墩)及追越(船舶顶流驶经桥墩)2种状态,利用船间水动力干扰通用模型计算船-桥干扰水动力,MMG模型计算船舶操纵性能,验证了桥区水域船舶临界失控水动力干扰区域的客观存在,将桥区安全通航由桥墩被动防撞转化为船舶主动防撞。通过船-桥间间距等相关参数的变化,系统分析了桥区水域船舶临界失控水动力干扰的变化规律。
Based on the slender theory, the pier is regarded as overtaken ship and meeting ship when ship passes it in backward flow and forward flow respectively. Hydrodynamics interaction force/moment was calculated with the explored generic model of ship-ship interaction. The ship＇s maneuverability was analyzed with MMG model. The calculations verified the existence of critical hydrodynamics interaction of incontrollable status under which the ship cannot provide sufficient force/moment to maintain ship under control. The concept of Critical Hydrodynamics Interaction （CHI） between ships was put forward for the first time, and the pier passive collision avoidance was transformed to ship active collision avoidance. Finally, Critical Hydrodynamics Interaction Zone of Incontrollable Status （CHIZIS） was systematically analyzed with the stagger change between ships. The conclusion shows that Critical Hydrodynamics Interaction would happen when the stagger between ships is shorter than 0. 3 Sp/L, and the magnitude of CHIZIS will be smaller when the ships become closer.
出处
《交通科技》
2008年第3期103-106,共4页
Transportation Science & Technology
基金
国家自然科学基金资助项目(10572094
50779033)
关键词
临界失控水动力干扰区
船-桥干扰
桥墩被动防撞
船舶主动防撞
桥区安全通航
critical hydrodynamics interaction zone of incontrollable status
ship-pier interaction
pier passive collision avoidance
ship active collision avoidance
safe navigation in pier waters
