船舶操纵运动数值模拟在桥梁通航孔布设中的应用研究*

布设于通航水域中的桥墩可能会对桥区河段通航安全产生较大影响,因此对桥位河段的通航情况及通航净空尺度展开分析研究十分必要。目前，桥梁的通航论证研究主要包括水流流速、流向、通航净空高度和和通航净空宽度，而对代表船舶通过设计通航孔时的船舶航行姿态研究甚少。在平面二维水流数学模型基础上，开发建立船舶操纵运动数学模型，通过模拟计算代表船舶通过桥区的航行姿态和航行参数，包括艏向角、舵角、漂角及航速等，结果表明可较好模拟在不同水文组合条件和不同通航孔条件下，船舶通过桥区水域的操控及航行条件。

Application research on layout of bridge navigable hole based on numerical simulation of ship maneuvering motion

It is necessary to study the navigable condition and navigational clearance dimension of the bridge,because the piers may have a great impact on the navigation safety.At present,the research on the navigable demonstration of the bridge mainly includes the water flow velocity,flow direction,navigational clearance height and width,while little research has been done on the ship motion state which representative ship through the navigable hole.Based on the 2D flow mathematical model,this paper establishes the mathematical model of ship maneuvering motion,and simulates and calculates the ship attitude and navigation parameters,including heading angle,rudder angle,drift angle and speed.The results show that it can better simulate the control and navigation conditions of the ship under different hydrographic conditions and different navigational holes.