渔业养殖平台网衣水动力载荷系数计算方法研究

Calculation method of hydrodynamic load factors for aquaculture platform netting

  • 摘要: 网衣所承受的水动力载荷对渔业养殖平台的受力及运动有显著影响。为确定不同材质与结构形式网衣所受到的水动力载荷,通过研究网衣的结构和材质特性,建立了纤维网衣和金属网衣水动力载荷系数计算方法。针对纤维网衣,提出了适用于不同网孔形状的网衣密实度计算公式;针对金属网衣,提出了一个等效计算公式,适用于多种网孔形状的网衣水动力载荷系数计算,并探讨了网孔形状对网衣水动力载荷系数的影响。计算结果表明,当网目边长相同时,无结纤维网衣中六边形网衣的水动力载荷系数最低,而金属网衣中矩形焊接网衣的水动力载荷系数最低。研究结果可为海上渔业养殖平台的网衣选型和水动力载荷计算提供参考。

     

    Abstract: The hydrodynamic load on netting has a significant impact on the force and motion of aquaculture platform. To determine the hydrodynamic load on netting of different materials and structural forms, by studying the structural and material characteristics of netting, we designed the standardized calculation methods for the hydrodynamic load factors on fiber netting and metal netting. For fiber netting, we set a formula for calculating the solidity of netting applicable to different mesh shapes. For metal netting, we set a formula for calculating the hydrodynamic load factors equivalent of netting applicable to different mesh shapes. Besides, we analyzed the impact of mesh shape on the hydrodynamic load factors of netting. The calculation results show that when the mesh edge length was the same, for knotless fiber netting, the hexagonal netting experienced the least hydrodynamic load factors. For metal netting, the rectangular welded netting experienced the least hydrodynamic load factors. The findings provide a reference for the selection of netting types and hydrodynamic load calculations for fishery platform.

     

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