Abstract
An artificial floating reef is an important part of the coastal ecological corridor. The large-scale construction of floating reefs by optimizing mooring methods can effectively improve the ecological effects of coastal projects. The artificial floating reef belongs to coastal engineering, and wave resistance is fundamental to its structural design. In this paper, the method for processing coupling forces and motion, the method for judging the floating reef out of water surface, and the method for correcting velocity and acceleration of water mass points are elaborated in detail by using the finite element method and lumped-mass mooring model. By comparing and analyzing the results of physical experiment and numerical simulation, the correctness of the numerical model is verified. Finally, the diachronic variation of pitching angle of floating reef, the tension of the mooring rope, and the total tension of the fixed points of the fishing net were analyzed by the dynamic response numerical mode with a new type of mooring. The purpose of the current study was to provide a basis for the optimization of structure shape, the matching of floating body, and the counterweight of artificial floating reef.
Highlights
A coastal ecological corridor [1,2] is a new thing that China has proposed in recent years, including coastal green belts adjacent to land areas, seawall ecological belts, and coastal beach ecological belts
The difference of numerical modeling approach between net cage and artificial floating reef are the calculation of the rotational inertia, the Blaine angle of rotational transformation of complex floating structures, and the treatment of the mutual coupling of forces and motions at the points or units where the constituent components are connected, which is the focus of this research
Numerical simulation methods for the motion of the floating frame, fishing net, and mooring rope under wave action are divided into two cases: rigidity and flexibility
Summary
A coastal ecological corridor [1,2] is a new thing that China has proposed in recent years, including coastal green belts adjacent to land areas, seawall ecological belts, and coastal beach ecological belts. (Hou et al [7]; Huang et al [8]; Bai et al [9]; Zhao et al [10]; Gui et al [11]; Moe-Føre et al [12]; Strand et al [13]) have long been committed to the research of the structure type of net cage, the movement of net cage’s floating frame, the mode of mooring, and the change of net cage’s volume They solved the problem of the size reduction and structural safety of the flexible structure of net cage under the action of waves and tidal currents, and ensured that net cage could meet the design requirements in different marine environments. The difference of numerical modeling approach between net cage and artificial floating reef are the calculation of the rotational inertia, the Blaine angle of rotational transformation of complex floating structures, and the treatment of the mutual coupling of forces and motions at the points or units where the constituent components are connected, which is the focus of this research
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
