海洋工程装备与技术 ›› 2017, Vol. 4 ›› Issue (5): 293-299.

• 海洋工程装备制造材料与设计技术 • 上一篇    下一篇

流速对自升式平台动力放大因子的影响研究

马网扣, 袁飞晖   

  1. 1.中国船舶及海洋工程设计研究院,上海 200011;2.上海外高桥造船有限公司,上海 200137
  • 收稿日期:2017-06-19 出版日期:2017-10-25 发布日期:2017-10-31
  • 作者简介:马网扣(1978—),男,高级工程师,主要从事海洋工程设计和研发工作。
  • 基金资助:
    工业和信息化部高技术船舶科研项目“自升式钻井平台品牌工程(Ⅰ型)”(工信部联装[2014]507号文)

Influence of Current Speed on Dynamic Amplification Factor of Jack-Up Units

MA Wang-kou, YUAN Fei-hui   

  1. 1. Marine Design & Research Institute of China, Shanghai 200011, China; 2. Shanghai Waigaoqiao Shipbuilding Co., Ltd., Shanghai 200137, China
  • Received:2017-06-19 Online:2017-10-25 Published:2017-10-31
  • Supported by:
     

摘要: 研究自升式平台动力放大因子的随机波动态响应分析法,以某自升式钻井平台为例进行动力放大因子分析,结果显示流速越大,流对平台动态和静态运动响应的抑制越显著,平台动力放大因子随着流速增大而减小。进一步进行算例平台的惯性力分析,结果显示随机波动态响应分析法能够考虑流速的影响,该方法得到的惯性力增大相对平缓。研究表明,流速较大时使用随机波动态响应分析法确定自升式平台的动力放大因子和惯性力,能优化桩腿设计,避免无谓的结构加强,有利于增大平台的可变载荷设计指标。

Abstract: Random wave dynamic response analysis method is studied and used to analyze a sample drilling jack-up unit. The result shows that current suppression on the dynamic and static responses of the unit increases as the current speed increases, but the dynamic amplification factor decreases meanwhile. The result also shows that the inertial force computed by random wave dynamic response analysis method increases relatively slowly since this method can take account of current effect. So random wave dynamic response analysis method should be selected to calculate dynamic amplification factor and inertial force under large current speed for optimizing structure design of legs and increasing variable deck load of jack-up units.

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