浪向角对自升式海洋平台动态放大因子的影响

上海交通大学学报（自然版） ›› 2011, Vol. 45 ›› Issue (09): 1351-1354.

浪向角对自升式海洋平台动态放大因子的影响

黄曌宇1, 2, 唐文勇1, 汪怡2, 王文涛2

(1.上海交通大学海洋工程国家重点实验室，上海 200030; 2.上海振华重工(集团)股份有限公司，上海 200125)

收稿日期:2010-08-14 出版日期:2011-09-30 发布日期:2011-09-30
基金资助:
上海市博士后科研计划重点项目资助(09R21421600)

Effect of Wave Direction Angles on the Dynamical Amplification Factor of Selfelevating Platform

HUANG Zhao-Yu-1, 2 , TANG Wen-Yong-1, WANG Yi-2, WANG Wen-Tao-2

(1. State Key Laboratory of Ocean Engineering, Shanghai Jiaotong University, Shanghai 200030, China；2. Shanghai Zhenhua Heavy Industry Co. Ltd., Shanghai 200125, China)

Received:2010-08-14 Online:2011-09-30 Published:2011-09-30

摘要/Abstract

摘要： 以某一自升式海洋平台的船体结构位移作为评价依据，基于海事结构设计分析软件SACS和Stokes 5阶波浪理论，从不同浪向角入手进行了动态放大因子(DAF)的计算，比较了不同浪向角下的DAF，并分析了DAF产生差异的原因.结果表明：不同浪向角下DAF随周期比的变化趋势基本相同；水动力的不同将会导致结构位移和加速度的差异；当水动力的1、2阶谐波产生叠加效应时，DAF值增大.

关键词: 自升式海洋平台, 动态放大因子, 浪向角

Abstract: The dynamical amplification factors based on the hull displacement for different wave directions were computed using Stokes’ 5th order wave theory, which was implemented through the ocean engineering software SACS. Then the DAF values for different wave directions were compared, which were described and explained. Some useful conclusions are got: the DAF curves are very similar for different wave angels, the differences of structural displacement acceleration are attributed to the change of difference of hydrodynamic force, the dynamical amplitude is increased because of the superimposed effects of the 1st and 2nd hydrodynamic harmonics.

Key words: self-elevating offshore platform, dynamic amplification factor, wave direction angle

中图分类号:

TB123
P751

黄曌宇1, 2, 唐文勇1, 汪怡2, 王文涛2. 浪向角对自升式海洋平台动态放大因子的影响[J]. 上海交通大学学报（自然版）, 2011, 45(09): 1351-1354.

HUANG Zhao-Yu-1, 2 , TANG Wen-Yong-1, WANG Yi-2, WANG Wen-Tao-2. Effect of Wave Direction Angles on the Dynamical Amplification Factor of Selfelevating Platform[J]. Journal of Shanghai Jiaotong University, 2011, 45(09): 1351-1354.