桥墩抗船撞击性能研究

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。首先阐述了船桥碰撞常用的研究方法,同时简要介绍了数值模拟方法的基本原理。用非线性有限元程序LS-DANA对一艘5万t实船与桥梁的碰撞过程进行了仿真分析,研究了有、无防撞装置对桥梁冲击性能的影响,结果表明柔性防撞装置既能保护桥墩又保护了船的安全,计算结果为工程设计提供了有价值的数据。

Study on the anticollision property of the bridge pier against ship

The study on the dynamic load applied to the bridge pier and its response during the process of ship-bridge collision is a complicated dynamic nonlinear problem.In this paper,the common research methods on ship-bridge collision are expounded firstly.The basic principles of numerical simulation method are recommended briefly.The collision process of the bridge collided by a 50,000 tons weigh ship is simulated using the nonlinear finite element software LS-DYNA.The effect of the anticollision device on the dynamic property of the bridge is analyzed.It is shown that the flexible anticollision device can protect the bridge pier and safeguard the ship at the same time.The valuable data are supplied for the engineering design.