波浪高度及方向对桩柱式围网养殖系统网片水力特性的影响

发布时间：2018-05-31 07:14

本文选题：水产养殖 + 计算机仿真　；参考：《农业工程学报》2017年02期

【摘要】：浅海围网养殖是一种生态型养殖模式,桩柱式围网是其中最为典型的模式之一,主体由排桩和网片组成。围网网衣系统安全是决定围网工程安全的关键所在。针对桩柱式围网,采用数值模拟方法对其主要构成部件单元网片在波浪条件下的变形和受力等水力特性进行了研究,重点分析了波高(1、2、3、4、5 m)和波向(10°、30°、50°、70°、90°)条件下围网网片的网线张力分布、结节偏移和桩柱系缚点受力特性及影响关系。结果表明,桩柱式围网单元网片的网线最大张力部位主要出现在网片上端两侧位置,应用时建议强化顶部纲绳的设计考虑;波向为30°~70°时,网线最大张力有一段较小的增加量,而结节最大偏移随波向的增大而增大;网片与桩柱系缚点的最大受力呈现两端大中间小的现象,建议强化顶部和底部系缚点。以上研究结果可为桩柱式围网工程设计与安装提供参考。
[Abstract]:Shallow seine culture is an ecotypic culture model, and pile-column seine net is one of the most typical models, the main body is composed of row pile and mesh. The safety of purse seine clothing system is the key to determine the safety of purse seine engineering. In this paper, the numerical simulation method is used to study the hydraulic characteristics of the main components of the pile-column seine under wave conditions, such as deformation and force. The distribution of wire tension, nodule migration and stress characteristics of pile binding point in seine plate under the condition of wave height of 1 ~ 2 ~ 3 ~ 3 ~ 3 ~ 4 ~ 5 m) and wave direction of 10 掳~ 30 掳~ (50 掳~ 50 掳~ 70 掳~ 90 掳) are analyzed in this paper. The results show that the maximum tension of the mesh of pile-column seine is mainly located at both sides of the upper end of the mesh. It is suggested that the design of the top rope should be strengthened when the wave direction is 30 掳or 70 掳, and there is a small increase in the maximum tension of the mesh when the wave direction is 30 掳or 70 掳. The maximum migration of the node increases with the increase of the wave direction, and the maximum force of the clamping point between the mesh and the pile column presents the phenomenon of large, medium and small at both ends, so it is suggested to strengthen the binding points at the top and bottom. The above results can provide reference for the design and installation of pile-column seine.
【作者单位】：浙江海洋大学国家海洋设施养殖工程技术研究中心;
【基金】：国家自然科学重点基金(51239002) 国家海洋局公益专项(201505025-2) 舟山市海洋专项(2015C41001)
【分类号】：S967;TV139.2

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