中文摘要：

根据显式瞬态非线性有限元分析技术，考虑碰撞中的材料非线性、几何非线性、接触非线性、运动非线性以及它们之间相互耦合的特性，用ANSYS／LS—DYNA软件建立了船与带有防撞设施的桥墩的有限元碰撞模型，并对碰撞过程进行了仿真计算．从整体上看，碰撞力是随着撞深的增加而增大．撞击船的碰撞动能基本上是被防撞设施以变形能的形式吸收，桥梁结构在吸收能量方面的作用很小．承台在碰撞中的损伤主要是由角钢的拉力对混凝土产生的高应力区引起的，其分布范围不大，持续时间很短，危害性很小．仿真结果反映了角钢支承钢管架防撞结构的基本性能，碰撞的整个时间历程得以全面的模拟实现，这是解析法和实验方法难以实现的．

英文摘要：

Based on the ANSYS/ LS-DYNA nonlinear FEM program, nonlinear FEM with momentary display function is applied in establishing the collision model of ship collision protection of bridge and simulation analysis. Many characters are taken into account, such as material nonlinearity, geometric nonlinearity, contact nonlinearity and coupling characters among them etc. The collision force will increase if the depth of collision increases generally. Kinetic energy of ship is basically absorbed by anti-collision equipment in the form of internal energy, the bridge structure in the energy absorption is a small role. The damage of pile cap in the collision is mainly because of high stress areas caused by tension of steel angles, the pile cap is little harmful. The result can reflect the basic capability of anti-collision equipment of steel pipe truss supported by steel angles, the course of collision is simulated perfectly. Which could not be achieved by the analytical method and experimentation.