变截面桥墩防撞装置性能

Performance of anti-collision device of variable cross-section pier

为给变截面桥墩的防撞设计提供依据,根据变截面防撞装置的基本结构和工作原理,用有限元软件LS-DYNA建立防撞装置和船舶有限元模型,并对3种不同工况下5 000 t货船与某Y型桥墩防撞装置碰撞过程中的能量转化、撞击力和防撞装置结构损伤程度等进行仿真分析.结果表明,撞击力随撞深的增加而增大,当撞深达到最大时撞击力也达到最大.

In order to provide basis for the anti-collision design for variable cross-section pier,according to the basic structure and working principle of the anti-collision device with variable cross-section,the finite element model of anti-collision device and ship is established by using finite element software LS-DYNA.The energy transform,the collision force and the degree of device damage in the head-on colli-sion process between a 5 000 t cargo ship and anti-collision device of a Y type pier under three different conditions are simulated.The results show that the collision force increases with the increase of the pene-tration,and the collision force reaches the maximum when the penetration reaches maximum.