|本期目录/Table of Contents|

[1]武卓威 刘 俊 寇雨丰 徐胜文.半潜式平台局部切割模拟及施工支撑方案改进[J].中国海上油气,2020,32(01):171-178.[doi:10.11935/j.issn.1673-1506.2020.01.021]
 WU Zhuowei LIU Jun KOU Yufeng XU Shengwen.Numerical simulation of local cutting process and improvement of supporting scheme during the construction of semi-submersible platform[J].China Offshore Oil and Gas,2020,32(01):171-178.[doi:10.11935/j.issn.1673-1506.2020.01.021]
点击复制

半潜式平台局部切割模拟及施工支撑方案改进()

《中国海上油气》[ISSN:1673-1506/CN:11-5339/TE]

卷:
第32卷
期数:
2020年01期
页码:
171-178
栏目:
海洋工程
出版日期:
2020-01-15

文章信息/Info

Title:
Numerical simulation of local cutting process and improvement of supporting scheme during the construction of semi-submersible platform
文章编号:
1673-1506(2020)01-0171-08
作者:
武卓威12 刘 俊12 寇雨丰12 徐胜文12
(1. 上海交通大学海洋工程国家重点实验室 上海 200240; 2. 上海交通大学高新船舶与深海开发装备协同中心 上海 200240)
Author(s):
WU Zhuowei12 LIU Jun12 KOU Yufeng12 XU Shengwen12
(1. State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; 2. Collaborative Innovation Center for Advanced Ship and Deep-sea Exploration, Shanghai Jiao Tong University, Shanghai 200240, China)
关键词:
半潜式平台 局部切割 有限元法 应力分布 支撑方案改进
Keywords:
semi-submersible platform local cutting process Finite Element Method stress distribution supporting scheme improvement
分类号:
P751
DOI:
10.11935/j.issn.1673-1506.2020.01.021
文献标志码:
A
摘要:
局部切割和构件替换是半潜式平台特检过程中的可能施工项目,但局部切割后平台原有的结构形式将发生显著改变,使应力重新分布,可能产生较为危险的高应力区域。本文采用有限元方法,按照特检切割方案对某半潜式平台立柱大肘板切割进行了模拟,基于第1轮切割施工现场实测数据对分析模型及方法的正确性进行了验证,并对大肘板切除后平台的应力状态进行了考察,结果表明大肘板切除后平台剩余结构的特定位置将产生显著的应力集中,按照原方案设置的支撑构件无法有效降低这些区域的应力水平。根据数值计算结果和局部结构形式,提出了2种支撑改进方案,并验证了改进方案的优越性。本文研究结果对半潜式平台的局部切割施工方案的制定具有重要借鉴意义。
Abstract:
Local cutting and the replacement of damaged or failed components are common steps during the special inspection of a semi-submersible platform. Whereas, exchanging the original platform structure after cutting may lead to stress redistribution, and result in unexpected high-stress areas. Therefore, based on the cutting scheme of a typical semi-submersible platform, the cutting process of the bracket at the joint between column and pontoon was simulated using the Finite Element Method(FEM), and the validity and correctness of the analysis model and method were verified according to the measured data during the first round of cutting. Besides, the structural stress distribution after the bracket cutting was studied. The FEM results suggests that severe stress concentration can be observed at certain areas of the remaining platform structure after the bracket was cut off, and the original supporting scheme cannot solve the problem effectively. Therefore, two different supporting schemes during construction were proposed according to the results of numerical simulation and the local structural form, and their advantages were verified. The conclusions of this paper will be of significant reference for designing the local cutting scheme of similar semi-submersible platforms.

参考文献/References:

[1] 崔青.海洋平台发展现状及前景[J].石化技术,2018(6):213.
[2] 刘宇.浅析海上平台及未来的发展重点[J].中国设备工程,2018(18):210-211.
[3] 张朝阳.深水半潜平台总体强度分析中波浪载荷计算与简化建模方法研究[D].上海:上海交通大学,2012. ZHANG Chaoyang.Study on wave loads calculating methods and simplified methods of modeling in the global strength analysis of a semi-submersible platform[D].Shanghai:Shanghai Jiao Tong University,2012.
[4] LI Binbin,LIU Kun,YAN Gongwei,et al.Hydrodynamic comparison of a semi-submersible,TLP,and spar:numerical study in the South China sea environment[J].Journal of Marine Science and Application,2011(3):306-314.
[5] 海文.“海洋石油981”五年期特检完工[N].中国能源报,2017-06-12.
[6] 高博,姜磊,彭欣,等.半潜式钻井平台修理质量策划的分析[J].中国修船,2018,31(1):52-54.
[7] 严文军.半潜式平台总体强度典型波浪工况研究[D].上海:上海交通大学,2014. YAN Wenjun.Study on characteristic wave cases in global strength analysis of a semi-submersible platform[D].Shanghai:Shanghai Jiao Tong University,2014.
[8] 吉华宇,刘俊,周佳,等.半潜平台总体强度评估的谱分析法和设计波法对比[J].海洋工程,2019,37(1):101-107,154. JI Huayu,LIU Jun,ZHOU Jia,et al.Comparison of spectral analysis and design wave method for global strength assessment of semi-submersible platform[J].Ocean Engineering,2019,37(1):101-107,154.
[9] 李红涛,邓贤锋.半潜式平台整体结构设计的波浪载荷研究[J].中国海上油气,2015,27(2):98-103.DOI:10.11935/j.issn.1673-1506.2015.02.017. LI Hongtao,DENG Xianfeng.Wave loads for global structural design of semi-submersibles[J].China Offshore Oil and Gas,2015,27(2):98-103.DOI:10.11935/j.issn.1673-1506.2015.02.017.
[10] 白艳彬,刘俊,张朝阳,等.深水半潜式钻井平台关键部位波浪载荷敏感性分析[J].中国海上油气,2010,22(5):344-348. BAI Yanbin,LIU Jun,ZHANG Chaoyang,et al.Wave load sensitivity analysis of key joints of deepwater semi-submersible platform[J].China Offshore Oil and Gas,2010,22(5):344-348.
[11] 谢文会,谢彬.深水半潜式钻井平台典型节点强度研究[J].中国海上油气,2010,22(4):265-269. XIE Wenhui,XIE Bin.Local strength analysis for typical joints of deepwater semi-submersible rig[J].China Offshore Oil and Gas,2010,22(4):265-269.
[12] WANG Shuqing,CAO Yijun, FU Qiang,et al.Hydrodynamic performance of a novel semi-submersible platform with nonsymmetrical pontoons[J].Ocean Engineering,2015,110:106-115.
[13] SAMYN L M,PAULO J,CUNHA V S.Dynamic model of a semi-submersible platform for the development of ballast control systems[J].IFAC Proceedings Volumes,2009,42(18):146-151.
[14] JANG B S,KIM J D,PARK T Y,et al.FEA based optimization of semi-submersible floater considering buckling and yield strength[J].International Journal of Naval Architecture and Ocean Engineering,2019,11(1):82-96.
[15] MA J,ZHOU D,HAN Z,et al.Fluctuating wind and wave simulations and its application in structural analysis of a semi-submersible offshore platform[J].International Journal of Naval Architecture and Ocean Engineering,2019,11(1):624-637.

相似文献/References:

[1]吉华宇 刘 俊 周 佳 王 璞.液舱建模方法对深水半潜式平台总体强度评估的影响[J].中国海上油气,2019,31(04):165.[doi:10.11935/j.issn.1673-1506.2019.04.022 ]
 JI Huayu LIU Jun ZHOU Jia WANG Pu.Analysis on the influence of liquid tank modeling method on overall strength assessment of deepwater semi-submersible platform[J].China Offshore Oil and Gas,2019,31(01):165.[doi:10.11935/j.issn.1673-1506.2019.04.022 ]

备注/Memo

备注/Memo:
第一作者简介: 武卓威,男,在读硕士研究生,主要从事船舶与海洋工程结构物强度研究。地址:上海市闵行区东川路800号上海交通大学木兰船建大楼B408(邮编:200240)。E-mail:WuZhuowei@sjtu.edu.cn。 通信作者简介: 刘俊,女,副教授,主要从事船舶与海洋工程结构物强度研究。地址:上海市闵行区东川路800号上海交通大学木兰船建大楼B408(邮编:200240)。E-mail:jliu@sjtu.edu.cn。收稿日期:2019-05-16 改回日期:2019-09-02
更新日期/Last Update: 2020-01-15