Abstract: It is very difficult to accurately calculate the collision force and nonlinear responses of bridge during vessel-bridge collision course. By means of basic theories and key technologies of numerical simulation, the whole process of vessel collision with the main tower of bridge is simulated and analyzed by LS-DYNA, simultaneously, the time history of the collision force, the exchange of energy and the deformation of the bridge is presented, which can be used as reference to the design and damage estimation of bridge.

Key words: vessel-bridge collision, numerical simulation, collision force, structural damage

摘要： 桥梁在船舶碰撞时受到的动力载荷和响应是复杂的动力非线性问题,在分析碰撞仿真基本理论和关键技术 的基础上,借助于非线性有限元软件LS-DYNA,仿真分析了船舶撞击桥梁主塔的基本过程,得到了船舶与主塔碰 撞时碰撞力、能量转化及结构变形的时间历程,所得结论对桥梁设计与碰撞后损伤评估有着重要的参考价值。

关键词: 船桥碰撞, 数值仿真, 碰撞力, 结构损伤