WU Yuanjin, HUANG Xiaohua, LIU Haiyang, HU Yu, CHEN Changping, YUAN Taiping, WANG Shaomin, TAO Qiyou. Experimental study on mooring force of a single-point mooring fish cage with ship-type truss structure[J]. South China Fisheries Science, 2021, 17(4): 118-125. DOI: 10.12131/20210025
Citation: WU Yuanjin, HUANG Xiaohua, LIU Haiyang, HU Yu, CHEN Changping, YUAN Taiping, WANG Shaomin, TAO Qiyou. Experimental study on mooring force of a single-point mooring fish cage with ship-type truss structure[J]. South China Fisheries Science, 2021, 17(4): 118-125. DOI: 10.12131/20210025

Experimental study on mooring force of a single-point mooring fish cage with ship-type truss structure

More Information
  • Received Date: January 12, 2021
  • Revised Date: May 24, 2021
  • Accepted Date: May 27, 2021
  • Available Online: May 31, 2021
  • Safe and efficient large-scale deep-sea aquaculture cage is an important facility leading the development of deep-sea aquaculture. In this study, we tested a single point mooring cage with a ship type truss structure with a 1∶40 wave-current tank model scale, and compared and analyzed the mooring forces of the cage under two different single point mooring modes of normal and failure conditions. On this basis, we studied the effect of netting, wave and current on the mooring force of cage. The results show that compared with the normal condition, the mooring force of the cage under the failure condition increased significantly, having a great impact on the safety of the cage. Under the normal condition, the stress of net cage increased with the increase of wave height, from 12.5 cm to 17.5 cm, and the mooring stress of net cage increased more than tripled. Under the combined action of wave and current, the mooring force of the cage was positively correlated with the velocity but negatively correlated with the period. Compared with the cage without netting, the mooring force with netting increased by more than doubled under the pure wave condition, and increased by 30%–60% under the combined action of wave and current. The results provide theoretical basis and data support for the mooring design and offshore installation of ship truss cages in the future.
  • [1]
    宋瑞银, 周敏珑, 李越, 等. 深海网箱养殖装备关键技术研究进展[J]. 机械工程师, 2015(10): 134-138. doi: 10.3969/j.issn.1002-2333.2015.10.060
    [2]
    宋协法, 万荣, 黄文强. 深海抗风浪网箱锚泊系统的设计[J]. 青岛海洋大学学报 (自然科学版), 2003, 33(6): 881-885.
    [3]
    HOU H M, DONG G H, XU T J, et al. System reliability evaluation of mooring system for fish cage under ultimate limit state[J]. Ocean Eng, 2019, 172: 422-433. doi: 10.1016/j.oceaneng.2018.12.020
    [4]
    HOU H M, DONG G H, XU T J. Analysis of probabilistic fatigue damage of mooring system for offshore fish cage considering long-term stochastic wave conditions[J]. Ships Offshore Struct, 2020(4): 1-12.
    [5]
    CELIKKOL B, BALDWIN K, STEEN R, et al. Open ocean aquaculture engineering: mooring & net pen deployment[J]. Mar Tech Soc, 2000, 34(1): 53-58. doi: 10.4031/MTSJ.34.1.6
    [6]
    GOUDEY C A, LOVERICH G, KITE-POWELL H, et al. Mitigating the environmental effects of mariculture through single-point moorings (SPMs) and drifting cages[J]. ICES J Mar Sci, 2001, 58(2): 497-503.
    [7]
    FREDRIKSSON D W, DECEW J C, TSUKROV I, et al. Development of large fish farm numerical modeling techniques with in situ mooring tension comparisons[J]. Aquacult Eng, 2007, 36(2): 137-148. doi: 10.1016/j.aquaeng.2006.10.001
    [8]
    佚名. 中集来福士将建全球最大最先进深水养殖工船[J]. 船舶工程, 2018, 40(2): 78.
    [9]
    LI L, JIANG Z Y, ONG M C, et al. Design optimization of mooring system: an application to a vessel-shaped offshore fish farm[J]. Eng Struct, 2019, 197: 1-15.
    [10]
    XU Z, QIN H D. Fluid-structure interactions of cage-based aquaculture: from structures to organisms[J]. Ocean Eng, 2020, 217: 107961. doi: 10.1016/j.oceaneng.2020.107961
    [11]
    HUANG C C, TANG H J, WANG B S, et al. Numerical simulation and field study of a single-point-mooring marine cage[C]//Proceedings of the 16th International Offshore and Polar Engineering Conference. San Francisco, California: The International Society of Offshore and Polar Engineers, 2006: 292-296.
    [12]
    HUANG C C, TANG H J, PAN J Y. Numerical modeling of a single-point mooring cage with a frontal rigid frame[J]. IEEE J Ocean Eng, 2009, 34(2): 113-122. doi: 10.1109/JOE.2009.2015167
    [13]
    HUANG C C, PAN J Y. Mooring line fatigue: a risk analysis for an SPM cage system[J]. Aquacult Eng, 2010, 42(1): 8-16. doi: 10.1016/j.aquaeng.2009.09.002
    [14]
    XU T J, DONG G H, LI Y C, et al. Numerical study of a self-submersible single-point mooring gravity cage in combined wave-current flow[J]. Appl Ocean Res, 2014, 48: 66-79. doi: 10.1016/j.apor.2014.07.014
    [15]
    XU T J, DONG G H, ZHAO Y P, et al. Analysis of hydrodynamic behaviors of gravity net cage in irregular waves[J]. Ocean Eng, 2011, 38(13): 1545-1554. doi: 10.1016/j.oceaneng.2011.07.019
    [16]
    XU T J, DONG G H, ZHAO Y P, et al. Numerical investigation of the hydrodynamic behaviors of multiple net cages in waves[J]. Aquacult Eng, 2012, 48: 6-18. doi: 10.1016/j.aquaeng.2011.12.003
    [17]
    XU T J, ZHAO Y P, DONG G H, et al. Analysis of hydrodynamic behaviors of multiple net cages in combined wave-current flow[J]. J Fluids Struct, 2013, 39: 222-236. doi: 10.1016/j.jfluidstructs.2013.02.011
    [18]
    HUANG X H, LIU H Y, HU Y, et al. Hydrodynamic performance of a semi-submersible offshore fish farm with a single point mooring system in pure waves and current[J]. Aquacult Eng, 2020, 90: 1-9.
    [19]
    谢璇. 波浪试验中渔网模型相似准则的分析与探讨[D]. 大连: 大连理工大学, 2016: 5-20.
    [20]
    桂福坤, 李玉成, 张怀慧. 网衣受力试验的模型相似条件[J]. 中国海洋平台, 2002(5): 23-26.
    [21]
    李玉成, 桂福坤, 张怀慧, 等. 深水养殖网箱试验中网衣相似准则的应用[J]. 中国水产科学, 2005, 12(2): 179-187. doi: 10.3321/j.issn:1005-8737.2005.02.012
    [22]
    COLBOURNE D B, ALLEN J H. Observations on motions and loads in aquaculture cages from full scale and model scale measurements[J]. Aquacult Eng, 2001, 24(2): 129-148. doi: 10.1016/S0144-8609(00)00069-8
    [23]
    CIFUENTES C, KIM M H. Hydrodynamic response of a cage system under waves and currents using a Morison-force model[J]. Ocean Eng, 2017, 141: 283-294. doi: 10.1016/j.oceaneng.2017.06.055

Catalog

    Article views (1000) PDF downloads (66) Cited by()
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return