中文摘要：

运用刚体运动学原理和集中质量方法,建立了计算重力式网箱浮架、网衣和锚碇系统受力和运动的数学模型。利用此数学模型获得了波流作用下网箱在网格式锚碇情况下锚碇锚绳受力、浮架运动的计算结果。在此基础上,计算并分析比较了不同设计流速与波况组合作用情况下,单体网箱各类锚绳（锚碇锚绳,连接锚绳和网格锚绳）受力、浮架运动及网衣变形情况。讨论结果表明,在相同工况下,各类锚绳中锚碇锚绳受力最大,连接锚绳受力次之,网格锚绳受力最小。锚碇锚绳、连接锚绳受力随波高、周期、流速的增加有不同程度的增加;网格锚绳受力随波高的增加有一定程度的增加,随流速的增加有较小幅度的减少,与周期变化关系不明显。浮架水平方向运动幅度随波高、周期及流速的增加而有不同幅度的增加;浮架竖直方向运动幅度随波高、周期的增加有不同程度的增加,随流速的增加有较小程度的减小。各种波流工况作用下,浮架倾角随流速的增加有一定程度的减少,随波高的增加有较小程度的增加,与周期变化关系不明显。网衣体积损失率随流速、波高及周期的增加有较小程度的增加。

英文摘要：

In this paper, based on rigid kinematics theory and lumped mass method, a mathematical model of the single grid mooring net cage under combined wave-current action was developed by setting up the motion equations of floating system, net system, mooring system and floaters. According to the model the forces on main ropes and the floating collar movement were calculated and the simulated results agree well with the experimental data. Then, the forces on mooring lines the floating collar movement and the net deformation were calculated too, The numerical results show that under the same condition, forces on the main ropes are the largest, followed by forces on bridle ropes and grid ropes. Forces on main ropes and bridle ropes increase as the current speed, the height and the period of waves increase; while forces on grid ropes increase as the wave height increase, while decrease as the current speed increase, and are hardly influenced by the period of waves The horizontal amplitude of the floating collar increases as the current speed, the height and the period of waves increase; the vertical amplitude increase as the height and period of waves increase, while decrease as the current speed increase but the influence degree is small. Under each condition, the floating collar inclination increases with the increase of the current speed, and decreases with the increase of the wave height, and has little relevance to the wave period. The rate of net deformations increases lightly as the current speed and the height of waves increase.