摘要
近岛礁海域距离大陆较远,风浪较小,已经成为发展水产养殖业的重点区域。研究发现,岛礁附近强烈的波浪反射会导致波浪能量的相对集中,进而造成养殖结构破坏。目前,有关养殖结构动力响应的研究大多集中在平坦海床海域,针对近岛礁海域的研究相对较少。为此,本文通过物理模型试验研究了一种布置在岛礁附近的铰接式多体浮式渔场平台在自存工况下的动力响应。结果表明:在自存工况下,岛礁地形增大了渔场平台的纵荡运动,其功率谱峰值相比平坦海床增加61.78%;平台迎浪侧系缆力的有效值增大为平坦海床的2.03倍。同时,岛礁地形引起的波浪反射使平台垂荡运动最大的位置由迎浪侧网箱转移至中间网箱,平台整体的纵摇运动减弱,但中间网箱与两侧网箱的相对转动增大。研究结果为近岛礁海域养殖设施及其系泊系统的设计提供理论参考。
Due to the long distance from the coastline and mild environmental conditions,the sea near islands has become a key area for the development of aquaculture.It is found that violent wave reflections near islands can lead to a relative concentration of wave energy,which easily causes structural damage to aquaculture facilities.Most of the studies on the dynamic response characteristics of aquaculture facilities have been focused on the flat seabed areas,while there are fewer studies on the sea near islands.To solve this problem,the dynamic response of a hinged multi-body floating aquaculture platform deployed in the sea near islands in the survival condition are studied in this paper by means of physical model experiment.The results show that the presence of island increases the surge motion of the platform and the maximum value of power spectrum density increases by 61.78%compared with that of the flat seabed.The significant value of the cable force on the windward side of the platform increases by 2.03 times compared with that of the flat seabed in the survival condition.At the same time,the wave reflection caused by the island topography has transferred the position of the platform with the largest heave motion from the cage on the windward side to the middle cage.The pitch motion of the platform has been decreased,but the relative rotation between the middle cage and other cages has been increased.The results provide a theoretical reference for the design of aquaculture facilities and mooring system deployed in the sea near islands.
作者
赵德辉
解斯达
马超
贾广臣
ZHAO Dehui;XIE Sida;MA Chao;JIA Guangchen(Changhai Marine and Fishery Comprehensive Administrative Enforcement Team,Dalian 116599,Liaoning,China;State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116024,Liaoning,China)
出处
《上海海洋大学学报》
CAS
CSCD
北大核心
2023年第5期1036-1047,共12页
Journal of Shanghai Ocean University
基金
大连市科技创新基金项目(2020RJ02)。
关键词
岛礁地形
多体浮式渔场平台
动力响应
物理模型试验
不规则波
island topography
multi-body floating aquaculture platform
dynamic response
physical model experiment
irregular wave
作者简介
赵德辉(1971-),男,研究方向为海洋牧场研究与管理。E-mail:875883588@qq.com。
