圆形重力式网箱锚碇系统的受力研究

依据Stokes二阶波浪理论和莫里森(Morison)方法,对圆形重力式网箱的浮架结构分别与工程上常用的两种锚碇系统(折线形与直线形)相结合情况下,锚碇系统的受力进行了数值计算及相应的物理模型试验。结果表明相同波况下折线形锚碇系统承受张力较小,在相同波浪周期条件下,波高越大锚碇点受力越大;相同波高下,锚碇点最大受力随周期变化不显著。将计算结果与模型试验对比,结果显示计算数值与试验数据较接近,表明了此计算方法的可行性,为进一步模拟浮架结构的运动变形打下基础。

Wave force on Mooring System of Gravity Cage

The anchor force of a circle floating collar of gravity fish-farming cage with two types of commonly used mooring system is investigated. The wave forces acting on the collar and the cable are derived with Morison method combined with the second order Stokes wave theory, and the anchor force is numerically evaluated and physically measured. The results show that the wave height exerts significant effect on the maximum with the similar wave period. The mooring cable of straight-line style encounters larger tension than that of fold-line style. the numerical results agree well with experimental data to verify the accuracy of the numerical method.