船舶停靠码头撞击力研究

Research on Impact Force Caused by Ships Lying at Berth

在船舶大型化的背景下,为了研究大吨位船舶停靠内河既有架空直立式码头过程撞击力对码头的影响,利用ABAQUS建立精细化有限元模型,对不同吨位、不同初始速度、不同撞击角度的船舶停靠码头的过程进行数值仿真分析,研究码头所受撞击力变化情况。结果表明,船舶直接停靠码头过程,系统能量转化迅速,撞击力在接触瞬间产生较大值,撞击力作用时间短,撞击力时程波峰尖锐,不利于码头的安全运行。

Large-scale ships prevail at present.In order to study the impact of large-tonnage ships on berth structure while berthing at the existing overhead vertical piers in inland rivers,a refined finite element model is established by using ABAQUS to carry out numerical simulation analysis on ship berthing process under the condition of different tonnages,initial speeds,and impact angles.And the change of impact force acting on berth structure is also studied.The results show that direct berthing of ships leads to rapid conversion of systematic energy,higher value of impact force in a moment of collision,shorter impact time,and sharp peak in the time history of impact force,which goes against the safety of port operation.