Study on Ship motions moored by "Pneumatic Caisson Mooring System"

设计了一种将船舶系泊到码头的“气动沉箱系泊系统”。这种方法与传统的系泊方法完全不同，传统的系泊方法是用绳索将浮船连接到码头上，在码头墙前的海底设置一个沉箱，开始向上移动，接触船底，不断地将船舶向上抬起。在装载和/或卸载后，沉箱开始与船舶一起向下移动，并且在某一点上船舶与沉箱分离并自由漂浮。为了研究船体在这些瞬态下的响应，采用1/45比例模型进行了有波和无波两种工况下的波浪槽试验。附着在船体和沉箱上的标记被记录在运动中的视频中，它们的轨迹被使用动作捕捉系统分析。研究发现，在与沉箱接触之前，船向上移动的速度几乎与沉箱相同，这总是导致船在沉箱上平稳着陆。

"A pneumatic caisson mooring system" to moor ships to a quay has been devised. The method is completely different from the conventional mooring where ropes are used to connect a floating ship to a quay: a caisson, which is set at the sea bottom in front of the quay wall, starts to moveupward, touches the ship's bottom and continuously lifts the ship upward. After loading and/or unloading, the caisson starts to move downward together with the ship, and at some point the ship separates from the caisson and floats freely. In order to investigate the response of the ship hull in these transient states, wave tank experiments were conducted with a model on 1/45 scale under wave-existing and no wave-existing conditions. The markers, attached to the ship hull and the caisson, were recorded on video in motion, and their trajectories were analyzed using a motion capture system. It was found that the ship moves upward at almost the same speed as the caisson just before contacting with it, and this always results in the ship's smooth landing on the caisson.