Wind-induced response of large offshore oil platform

被引：0
|
作者：
Liu H. [1 ]
Chen G. [1 ]
Lyu T. [1 ]
Lin H. [1 ]
Zhu B. [1 ,2 ]
Huang A. [1 ]
机构：
[1] Centre for Offshore Engineering and Safety Technology, China University of Petroleum, Qingdao
[2] School of Civil Engineering, Tianjin University, Tianjin
来源：
Chen, Guoming (offshore@126.com) | 2016年 / Science Press卷 / 43期
基金：
中国国家自然科学基金;
关键词：
Derrick; Fluctuating wind load; Gust loading factor; Offshore oil platform; Wind-induced response; Wind-induced vibration;
D O I：
10.11698/PED.2016.04.19
中图分类号：
学科分类号：
摘要：
In connection with wind sensitivity for the towering and hollowed-out structures (drilling derrick, crane, etc) of large offshore oil platform, the wind-induced response of towering structure was studied. By the similarity criteria, high frequency force balance tests for the large offshore oil platform under 0-360° wind directions were carried out, and the spatial distribution model of fluctuating wind load acting on platform was presented. Also, the characteristics of wind-induced vibration and the changing rule gust loading factors were obtained precisely through wind-induced assessment in all directions. The results show that: the RMS (Root Mean Square) of the fluctuating across-wind load is about 10% of the fluctuating along-wind load on the platform; the vibration is mainly focused on the towering and hollowed-out structure like derrick, and the RMS of the across-wind acceleration is about 55% of the along-wind acceleration; the towering derrick has a big dynamic magnification of fluctuating across-wind load. The across-wind load can not be neglected in wind resistance design of large offshore oil platform, also the wind-induced response on the top/bottom of derrick and the magnification of fluctuating across-wind load of towering structure should be mainly considered. © 2016, Science Press. All right reserved.
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页码：647 / 655
页数：8
相关论文
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