海船撞击跨海大桥的有限元模拟与海上建筑物的防御  

Finite element simulation on collision of ship with cross-sea bridge and protection of marine structures

作　　者：周力[1] 韩乐园[1] 李阳[1] 

机构地区：[1]青岛科技大学材料科学与工程学院,山东青岛266042

出　　处：《计算机辅助工程》2009年第4期41-43,共3页Computer Aided Engineering

摘　　要：为预测某海湾大桥受船舶撞击后的响应,建立该大桥和万吨级海船的有限元模型,利用ANSYS和LS-DYNA模拟海船在8m/s的正常航速下,船首以90°正向撞击主桥墩承台部位的过程.通过分析各构件的损伤变形情况,给出桥体应力分布,输出碰撞构件的位移曲线和撞力曲线.结合实验结果提出对大桥桥墩承台结构优化及海上建筑物防护的建议.该方法可为桥梁的抗撞击优化设计提供参考.To predict the response of a bay bridge collided by ship, a finite element of the bridge and a finite element model of million-ton ship are established, and the ship-bridge collision process that the bow of the ship in 8 m/s collides with the pile cap of the main bridge pier by 90° is simulated. By analyzing the damage deformation of the components, the stress distribution of the bridge body is presented and the displacement curves of the collided bridge components and the collision force curves are exported. The suggestions about the structural optimization on the pile caps of bridge piers and the protection of marine structures are proposed combined with the experimental results. The method can provide references to optimization design on anti-collision ability of bridges.

关 键 词：船桥碰撞 跨海大桥 海上建筑物 ANSYS LS-DYNA 

分 类 号：U443.26[建筑科学—桥梁与隧道工程]