起重船作为大型施工设备，在起吊围堰作业过程中，起吊高度及吊物入水效应会改变船体的载荷分布与运动响应。本文研究对象为5500 t级双臂架变幅式起重船，利用水动力学软件Aqwa 建立起重船及所吊围堰水动力模型，在势流理论基础上通过频域、时域分析，研究浅水情况下起重船及围堰的运动响应、围堰入水对船体运动的影响，并分析了不同环境载荷作用角度、不同围堰起吊高度对起重船及围堰运动响应、系泊缆及吊缆张力响应的影响。本文认为在围堰下降过程中，船体及围堰运动幅度较小，该设计方案系泊缆及吊缆满足安全要求，可为起重船安全作业提供参考。
The dynamic behavior of crane ships during heavy lifting operations is significantly influenced by load variations and hydrodynamic interactions. This study investigates the motion response of a 5,500-ton double-boom variable-reach crane vessel and a suspended cofferdam under shallow water conditions. Hydrodynamic models of the vessel and cofferdam were developed using Aqwa based on potential flow theory. Frequency-domain and time-domain analyses were conducted to assess the motion behavior, particularly the effect of cofferdam immersion on vessel dynamics. The influences of environmental load direction and cofferdam lifting height on the motion responses of both structures were also evaluated, along with the tension in mooring lines and hoisting cables. During the cofferdam lowering process, the movement of the vessel and cofferdam remains minimal. The mooring lines and lifting cables specified in this design meet safety requirements and can serve as a reference for safe operations of the crane vessel.
2026,48(8): 67-73 收稿日期：2025-8-18
DOI：10.3404/j.issn.1672-7649.2026.08.011
分类号：U662.2
作者简介：吴雪峰(1989-),男,硕士,工程师,研究方向为大型水上施工装备研发
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