摘要： 为扩大钢架式网箱的养殖空间，提出了一种在钢架式网箱基础上铰接外网箱的组合钢架式网箱。利用海洋工程水动力软件OrcaFlex对其进行水动力性能分析。对比分析在纯流、纯波浪及波流联合工况下，组合钢架式网箱和铰接前钢架式网箱的浮架与网衣连接点的有效张力，网箱容积剩余率和锚绳力，以及组合钢架式网箱的铰链系统运动响应。结果显示：相较于钢架式网箱，组合钢架式网箱的浮架与网衣连接点受力和锚绳力都有所增大；铰接外网箱能够扩大养殖空间并且不会影响内网箱的容积剩余率。通过在钢架式网箱基础上铰接外网箱能够达到扩大养殖空间的目的。研究结果可为在实际中应用铰接外网箱来扩大养殖空间提供参考。

关键词: 组合钢架式网箱, 铰链, 数值模拟, 容积剩余率

Abstract: To expand the breeding space of rigid frame cages, a new type of combined rigid frame cage with a hinged outer cage on the base of the rigid frame cage was put forward. The hydrodynamic performance of the model was analyzed by using the marine engineering hydrodynamic software OrcaFlex. Under the conditions of pure flow, pure wave, and wave-current, the effective tension of the connection point between the floating frame and the net clothing of the combined rigid frame cage and the hinged rigid frame cage, the residual volume of the cage and the anchor rope force were compared and analyzed. At the same time, the Kinematic response of the hinged system of the combined rigid frame cage was analyzed. The results show that: compared with the rigid frame cage, the force of the connection point between the floating frame and the net clothing and the anchor rope is increased; the hinged outer cage can expand the breeding space and does not affect the remaining volume of the inner cage. The purpose of expanding the breeding space can be achieved by articulating the outer cage based on the steel frame cage, and the research results can provide a reference for the application of the hinged outer cage in practice to expand the breeding space.

Key words: combined rigid frame cage, hinge, numerical simulation, volume residual rate