中文摘要：

对拟建涪陵乌江大桥复线桥进行船撞风险研究。根据该桥桥址处的水流速度,典型水位,通航船舶密度、航速,通航净空尺度,航迹线以及桥梁的极限抗船撞能力等,采用三概率积分法,确定该桥拱圈碰撞频率和倒塌频率。另外,依据行业风险水平和风险评价矩阵,并结合三概率积分法计算结果来确定该桥船撞风险等级。

英文摘要：

The paper studies ship collision risk of double-line bridge in Fuling Wujiang River Bridge to be constructed. In accordance with water flow rate,typical water level,navigation density and speed of ships,net clearance dimension of navigation,track line and limit resistance of bridge to ship collision,etc.,the paper determines collision frequency and collapse frequency of arch ring of the bridge by means of the three probability integral method. In addition,the paper determines the risk grade of ship collision the bridge according to the risk level of industry and risk assessment matrix and in combination with the calculated results of the three probability integral method.