文献类型： 外文期刊
作者： Liu, Hai -Yang 1 ; Pang, Guo-Liang 2 ; Xiong, Yan-Lan 4 ; Yang, Shuai 1 ; Yuan, Tai-Ping 2 ; Chen, Xin-Ting 2 ; Huang, Xiao-Hua 2 ; Yuan, Si 1 ;
作者机构： 1.Tsinghua Univ, Dept Civil Engn, Key Lab Civil Engn Safety & Durabil, China Educ Minist, Beijing 100084, Peoples R China
2.Sanya Trop Fisheries Res Inst, Key Lab Efficient Utilizat & Proc Marine Fishery R, Sanya 572019, Peoples R China
3.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Guangzhou 510300, Peoples R China
4.Guangdong Polytech Inst, Guangzhou 510091, Peoples R China
关键词： Fish farm; Fishing net; Truss structure; Aging test; Finite element method
期刊名称：OCEAN ENGINEERING （ 影响因子：5.0； 五年影响因子：5.2 ）
ISSN： 0029-8018
年卷期： 2024 年 292 卷
页码：
收录情况： SCI
摘要： Fish farms face the risk of aquaculture failure due to prolonged operation and the excessive loads caused by typhoons. Aging tests conducted for this study using salt spray, humid heat, and xenon lamps confirm that netting performance significantly declines compared to that of unused nets. The seawater-exposed portion of the netting in the dry-wet separation area is especially susceptible to damage. After three years of natural aging, the netting retains 48% of its original strength, and its elongation at break decreases from 90% to 32%. Under a standard load of 20 N, the equivalent wire model's maximum wear length is 205 m. The fishing net is prone to wear because of sliding friction with the truss. The net opening may fracture when loaded with 1000 N, with a maximum stress of 36.40 MPa at the corners. The netting's fatigue life decreases sharply when the vibration force exceeds 60% of its maximum strength. Moreover, risk analysis shows that fish farms with single-point mooring can successfully withstand a tension of 1256.72 kN during super-typhoons. In redesigned models, buoyancy tanks decrease current resistance, and trapezoidal fishing nets with an increasing slope along the truss column effectively reduce wear.
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