本文以5千吨级散货船在失控状态下以0.5 m/s的速度垂直撞击某高桩码头结构为例，利用显式动力学分析软件LS-DYNA建立该撞击过程的动力仿真模型，对失控船舶撞击作用下的高桩码头进行动力响应研究。通过对仿真计算结果进行撞击力时程分析、位移时程分析、等效应力分析以及加速度时程分析，得到码头受到撞击后的运动规律和受力薄弱位置，为同类码头的设计、维护及改造提供理论依据。研究得出码头在受到撞击后会出现较为明显的扭转和振动，撞击过程中应力集中分布于撞击位置、附近排架中桩斜度较大的斜桩以及桩与上部结构的连接处，当船撞事故发生后，应重点对这些位置进行质量检测。
Taking the 5000 t bulk carrier impacting vertically to a piled wharf structure at a speed of 0.5 m/s under the state of out of control as an example, an explicit dynamic analysis software LS-DYNA was used to establish the dynamic simulation model of the collision process, and the dynamic response of the piled wharf under the impact of the runaway ship was studied. Through the detailed analysis of the impact force, displacement and distribution direction, equivalent stress and acceleration of the wharf, the weak position of the wharf and the motion law after the impact are obtained, which provides a theoretical basis for the design, maintenance and reconstruction of similar wharfs. The results show that the piled wharf will have obvious torsion and vibration after being impacted. The stress is concentrated in the impact position and the inclined piles with large inclination degree in the nearby frame bent and the connecting place between the piled wharf and the superstructure. When the ship collision occurs, the quality detection should be focused on these positions.
