复杂海况下系泊系统-起重船-吊物耦合运动响应模拟分析

Simulation Analysis of Coupled Motion Response of Mooring System-Crane Vessel-Suspended Load Under Complex Sea State

针对起重船海上作业过程中的船体、吊物与系泊缆耦合作用,开展数值仿真。基于动力学基本原理、势流理论和细长杆理论,编写系泊系统-起重船-吊物耦合运动分析程序。以蓝鲸号起重船为研究对象,重点关注风、浪、流环境组合作用下起重船、吊物和系泊缆的运动和动力学行为。结果验证了多系统耦合的起重船计算模型的合理性,获取有关运动响应受环境载荷影响的相关认知,可有效指导海上吊装作业。

A numerical simulation is carried out to study the coupling effect of the crane vessel,suspended load and mooring cables in the offshore operation of the crane vessel.According to the fundamental principle of dynamics,potential flow theory and slender rod theory,the mooring system-crane vessel-suspended load coupling analysis program is established.Taken the crane vessel Lanjing as the research object,the motion and dynamic behavior of the crane vessel,suspended load and mooring cables under the combined action of wind,wave and current environment are focused on.The results validate the rationality of the multi-system coupling crane vessel computational model and obtain the relevant cognition of the motion response affected by the environmental load,which can effectively guide the offshore lifting operations.