STUDY ON NATURAL VIBRATION CHARACTERISTICS AND MOTION RESPONSE OF FOUR-BUCKET FOUNDATIONS DURING AIR-FLOATING

被引：0
|
作者：
Liu X. [1 ,2 ]
Zhao M. [1 ,2 ]
Le C. [3 ]
Yu K. [1 ,2 ]
Luo S. [4 ]
机构：
[1] National Engineering Research Center for Inland Waterway Regulation, Chongqing Jiaotong University, Chongqing
[2] Key Laboratory of Ministry of Education for Water Conservancy and Transportation Engineering, Chongqing Jiaotong University, Chongqing
[3] School of Civil Engineering, Tianjin University, Tianjin
[4] Army Logistics University, PLA, Chongqing
来源：
Taiyangneng Xuebao/Acta Energiae Solaris Sinica | 2023年 / 44卷 / 01期
关键词：
added mass coefficient; bucket foundation; draft; offshore wind power; response amplitude operator; water depth;
D O I：
10.19912/j.0254-0096.tynxb.2021-0803
中图分类号：
学科分类号：
摘要：
Aiming at the dynamic and motion characteristics of multi-bucket foundation during air-floating，a four-bucket foundation with a distance between the buckets of 2.5 times diameter is designed. A combination approach of physical model tests with a scale of 1：25 and numerical models is adopted to investigate the natural vibration characteristics in still water and motion responses under regular waves. The results show that the natural vibration characteristics in still water and the change trend of motion responses in regular waves can be well predicted by numerical simulations. With the draft increasing，the damped natural vibration period increases，while the added mass coefficient and damping ratio decreases. The added mass coefficient varies between 1.4-1.7. Increasing draft can improve the oscillating motion performance of the structure，but it increases the heaving response and enlarges the periodic range of amplitude close to the maximum amplitude of pitching motion. The shallower the water，the greater the oscillating motion. © 2023 Science Press. All rights reserved.
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页码：211 / 217
页数：6
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