摘要： 深远海网箱在外海作业会受到极端恶劣海况的影响，稳定有效的系泊系统对保证网箱良好的耐波特性、保障养殖效益意义重大。本研究针对一种单点系泊船型桁架结构网箱建立其水动力分析模型，通过开展相关数值计算并与物理试验结果进行对比验证该模型的准确性；在此基础上，通过分析多组波浪条件下网箱动态响应、锚链系泊张力和最小卧链长度开展了“一”字型系泊和“Y”字型系泊两种系泊方案的对比优选，在确定系泊方案后，从锚链长度和配重重量两个方面开展系泊参数分析研究。结果显示：“Y”字型系泊效果要优于“一”字型系泊；不同锚链长度及配重重量对网箱平台运动响应影响较小，但锚链长度的延长和配重重量的增加可以有效降低系泊张力峰值和延长卧链长度。本研究可为桁架结构网箱系泊分析及优化设计提供计算依据。

关键词: 船型网箱, 系泊方式, 数值模拟, 优选分析

Abstract: The operation of a deep-sea cage in the open sea is affected by extreme and severe sea conditions. An effective and reliable mooring system is the key to ensuring the excellent seakeeping of the cage and good aquaculture benefits. In this paper, the hydrodynamic numerical model of a single point mooring ship-type truss cage was established. And then the model was verified by comparison between numerical calculation results and physical experiment results. On this basis, two mooring types, "—" and "Y", were presented and their characteristics were compared by analyzing the dynamic response of the cage, mooring tension of the anchor chain, and minimum lying length of the chain under multiple wave conditions. After that, the mooring influencing parametric analysis was implemented from two aspects: anchor chain length and weight of clump weight. The results show that the "Y" mooring system is better than the "—" mooring system and different anchor chain lengths and clump weights have little effect on the motion response of the cage, but the increase of anchor chain length and weight of clump weight can effectively reduce the peak mooring tension and extend the length of lying chain. This research can provide the basis for the mooring analysis and optimization design of truss cages.

Key words: ship-type cage, mooring mode, numerical simulation, optimization analysis