重力式海洋养殖网箱系统受力分布及变形研究  

Study on tension distribution and deformation of gravity aquaculture cage

作　　者：曹宇 王宁 叶谦 单华锋 张安 CAO Yu;WANG Ning;YE Qian;SHAN Huafeng;ZHANG An(College of Engineering science and technology,Shanghai Ocean University,Shanghai 201306,China;Shanghai Engineering Research Center of Marine Renewable Energy,Shanghai 201306,China;Taizhou University,TaiZhou 318000,Zhejiang,China;Huangyan Social Development Group Co.,Ltd,Taizhou University,TaiZhou 318000,Zhejiang,China)

机构地区：[1]上海海洋大学工程学院,上海201306 [2]上海海洋可再生能源工程技术研究中心,上海201306 [3]台州学院,浙江台州318000 [4]黄岩社会事业发展集团有限公司,浙江台州318000

出　　处：《渔业现代化》2022年第5期106-114,共9页Fishery Modernization

基　　金：上海市工程技术研究中心建设计划“上海海洋可再生能源工程技术研究中心(19DZ2254800)”。

摘　　要：以重力式海洋养殖网箱系统为研究对象,基于海洋工作环境,借助网衣网目群化等方法建立浮式养殖平台-网箱水动力仿真模型,应用质量集中法及Morison方程研究了网箱系统联合浮式养殖平台运动响应的受力分布及变形。对比试验数据验证了计算方法的可行性。结果显示:在浪流作用下浮式养殖平台与网箱间的系泊缆受力呈现大幅波动;网衣受力最大区域出现在靠近系泊缆部位,且受力最大区域垂直方向网绳张力最大值是相邻水平网绳张力的4.8倍;网衣变形主要受浪流影响较大且往复变化,工作海况下最小网衣体积剩余率为80.1%;随着海况等级升高,系泊缆张力增大且网衣体积剩余率减小,在6级海况下最小网衣剩余体积率为60.5%。本研究结果可为重力式海洋养殖网箱系统的应用提供技术支持。Based on the working environment of the cage,the gravity marine aquaculture cage system was taken as the research object.The ocean floating platform and the cage hydrodynamic simulation model was established by means of the mesh grouping.The lumped mass method and Morison equation were applied to studying stress distribution and deformation of cage system with the motion response of aquaculture floating platform under wave and flow load.Then,the credibility of the research method was verified by comparing with the experimental data.The results show that the mooring line fluctuated greatly under the action of wave and current;the most stressed area of the net appeared near the mooring line,and the maximum tension of horizontal rope in the most stressed area was 4.8 times smaller than that in adjacent vertical direction;in addition,the deformation of the cage was mainly affected by wave and current and changed reciprocally;in particular,the minimum the net volume reduction coefficient was 80.1%;moreover,as the increase of the sea state,the mooring line tension increased and the net volume reduction coefficient decreased and the minimum net volume reduction coefficient was 60.5%in sea state 6.The research results can provide technical support for the application of the gravity marine aquaculture cage systems.

关 键 词：海洋养殖网箱 网衣网目群化 受力分布 浪流作用 体积剩余率 

分 类 号：S953.4[农业科学—水产养殖]