自升式平台桩腿海上对接过程中的碰撞问题
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摘要
基于非线性有限元理论,研究自升式平台桩腿吊装过程中浮吊船与平台的碰撞问题以及桩腿移动就位时与平台上层建筑的碰撞问题,分析撞击过程中平台的变形、应力变化及结构失效等情况,计算出使平台不同区域发生破坏的临界碰撞速度,给出浮吊船在就位过程中的安装制动距离以及移动过程中与上层建筑间的安全距离和移动速度限制,为桩腿海上吊装作业方案设计提供参考。
Based on the nonlinear finite element theory, the paper studies the collision problem of floating crane and platform in the process of jack-up platform legs lifting and the collision between the legs and superstructure of the platform when the legs move in place. The analysis of the deformation, stress and structural failure of the platform during the collision process is done and the critical collision velocity leading to damage in different area of the platform is calculated. The safe brake distance of floating crane in the place and the safe distance of leg lifting to the superstructure of platform in the process of moving and the moving speed limiting are given. It provides reference for the design of offshore lifting operation scheme of pile legs.
Based on the nonlinear finite element theory, the paper studies the collision problem of floating crane and platform in the process of jack-up platform legs lifting and the collision between the legs and superstructure of the platform when the legs move in place. The analysis of the deformation, stress and structural failure of the platform during the collision process is done and the critical collision velocity leading to damage in different area of the platform is calculated. The safe brake distance of floating crane in the place and the safe distance of leg lifting to the superstructure of platform in the process of moving and the moving speed limiting are given. It provides reference for the design of offshore lifting operation scheme of pile legs.
引文
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[2]廖谟圣.三论我国海洋石油工业技术装备之国产化[J].中国海洋平台,2004(4):3-9.
[3]陈宏,李春祥.自升式钻井平台的发展综述[J].中国海洋平台,2007(6):1-6.
[4]VILLAVICENCIO R,KIM Y H,CHO S R,et al.Deformation Process of Web Girders in Small-scale Tanker Double hull Structures Subjected to Lateral Impact[J].Marine Structures,2013,32(3):84-112.
[5]MCDERMOTT J,KLINE R,JONES E,et al.Tanker Structural Analysis for Minor Collisions[J].Deformation,1974,82:382-414.
[6]SHA Y,HAO H.Numerical Simulation of Barge Impact on a Continuous Girder Bridge and Bridge Damage Detection[J].International Journal of Protective Structures,2013,4(1):79-96.
[7]刘峰.基于耐撞性的新型船舶结构形式研究[D].上海:上海交通大学,2007.
[8]舒雅.海上风电吊装船吊装作业过程中结构损伤安全研究[D].江苏镇江:江苏科技大学,2015.
[9]胡志强,崔维成.船舶碰撞机理与耐撞性结构设计研究综述[J].船舶力学,2005(2):131-142.
[10]杨亮.海洋导管架平台的耐撞特性研究[D].辽宁大连:大连理工大学,2008.
[11]杨飞,尤小健,国占东,等.船舶碰撞研究中的若干问题[J].舰船科学技术,2011,33(8):182-187.
[12]DNV.Design against Accidental Loads:DNV-RP-C204[S].2004.
[13]MOTORA S,FUJINO M,SUGIURA M,et al.Equivalent Added Mass of Ships in Collisions[J].Journal of Society of Naval Architecture of Japan,1971,7:128-138.