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浙江大学学报(工学版)
J4  2010, Vol. 44 Issue (4): 778-782    DOI: 10.3785/j.issn.1008-973X.2010.04.027
计算机技术﹑电信技术     
深水海底管道极限承载能力分析
党学博1, 龚顺风1, 金伟良1, 李志刚2, 赵冬岩2, 何宁2
1.浙江大学 结构工程研究所,浙江 杭州 310058； 2.海洋石油工程股份有限公司,天津 300452
Analysis on ultimate bearing capacity of deepwater submarine pipe
DANG Xue-bo1, GONG Shun-feng1, JIN Wei-liang1, LI Zhi-gang2,
ZHAO Dong-yan2, HE Ning2
1. Institute of Structural Engineering, Zhejiang University, Hangzhou 310027, China;
2. Offshore Oil Engineering Co. Ltd, Tianjin 300452, China
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摘要：

在深水海域铺设海底管道的环境条件往往比浅水区域更加恶劣,将会在管道垂弯区产生较大的荷载组合,可能导致管道发生屈曲破坏.为确保管道的安全,将深水海底管道简化为理想弹塑性材料,对管道铺设时的受力状态进行理论分析.以最大变形能密度为屈服准则,推导出海底管道在弯矩、轴向拉力和外压共同作用下的极限承载能力公式,并应用到S型深水铺管施工受力分析中.结果表明,水深越深则管道上的荷载组合越大,径厚比越大则管道的极限承载能力越小.使用推导出的深水管道极限承载能力公式可以快速、有效地判别管道是否安全.当铺设水深超过3 500 m时,算例中径厚比为20的管道将发生屈曲破坏,而在2 000 m水深时,径厚比超过30的管道才会发生屈曲破坏.
Abstract:

The submarine pipelines in deepwater sea area are subjected to more severe environmental loads than those in shallow water during the installation process, therefore the load combination could become critical and the local buckling may occur in the sagbend segment of pipelines. For ensuring pipeline safety, theoretical analysis for mechanical characteristics of deepwater submarine pipes was carried out with the assumption that the stress versus strain curve of the pipe material is elasticperfectly plastic. The ultimate bearing capacity of pipes under the combined bending, longitudinal tension force and external hydrostatic pressure was derived according to the maximum deformation energy density yield criterion. Then the formula of ultimate bearing capacity was applied to SLay technique to evaluate the safety of pipes. The results show that the load combination acting on the pipes increases as the water depth increases, and the ultimate bearing capacity of pipes decreases as the ratio of diameter to thickness increases. It is very convenient and effective to evaluate the safety of pipes with the derived equation. When the pipelaying depth is larger than 3 500 m, the pipe with the ratio of diameter to thickness of 20 in the example may occur buckling failure, and the pipeline will be failure with the ratio of diameter to thickness greater than 30 for 2 000 m water depth.
出版日期: 2010-05-14
:  TE973.1  
基金资助:

国家“863”高技术研究发展计划资助项目（2006AA09A105）
通讯作者: 龚顺风，男，副教授. E-mail: sfgong@zju.edu.cn     E-mail: dang_xuebo@yahoo.com.cn
作者简介: 党学博（1982—），男，河北邯郸人，博士生，主要从事海底管道方面的研究. E-mail: dang_xuebo@yahoo.com.cn
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引用本文:

党学博, 龚顺风, 金伟良, 李志刚, 赵冬岩, 何宁. 深水海底管道极限承载能力分析[J]. J4, 2010, 44(4): 778-782.

DANG Hua-Bo, GONG Shun-Feng, JIN Wei-Liang, LI Zhi-Gang, DIAO Dong-Yan, HE Ning. Analysis on ultimate bearing capacity of deepwater submarine pipe. J4, 2010, 44(4): 778-782.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2010.04.027    或    http://www.zjujournals.com/eng/CN/Y2010/V44/I4/778

［1］ BAI Yong, BAI Qiang. Subsea pipelines and risers ［M］. Oxford: Elsevier Science Ltd, 2005： 4165.
［2］ BAI Yong, IGLAND R T, MOAN T. Tube collapse under combined external pressure, tension and bending ［J］. Marine Structure, 1997, 10(5): 389410.
［3］ KYRIAKIDES S, CORONA E. Mechanics of offshore pipeline ［M］. Oxford: Elsevier Science Ltd, 2007: 225238.
［4］ 周承倜,马良.海底管道屈曲及其传播现象［J］.中国海上油气（工程）,1994,6(6): 18.
ZHOU Chengti, MA Liang. Buckle of subsea pipeline and its propagation ［J］. China Offshore Oil & Gas Engineering, 1994, 6(6): 18.
［5］ 宋甲宗,戴英杰.海洋管道铺设时的二维静力分析［J］.大连理工大学学报,1999,39(1): 9194.
SONG Jiazong, DAI Yingjie. 2D static analysis of submarine pipelines during pipelaying ［J］. Journal of Dalian University of Technology, 1999, 39(1): 9194.
［6］ PALMER A C, HUTCHINSON G, ELLS J W. Configuration of submarine pipelines during laying operations ［J］. Journal of Engineering for Industry, 1974, 96(11): 11121118.
［7］ 曾晓辉,柳春图,邢静忠.海底管道铺设的力学分析［J］.力学与实践,2002,24(2): 1921.
ZENG Xiaohui, LIU Chuntu, XING Jingzhong. Mechanical analysis of pipelaying ［J］. Mechanics in Engineering, 2002, 24(2): 1921.
［8］ 闫澍旺,肖智旺,田英辉.单层保温管海底管线在铺设状态的层间剪力分析［J］.海洋技术,2005,24(2): 8992.
YAN Shuwang, XIAO Zhiwang, TIAN Yinghui. Intersurface shear stress analysis for ocean pipelines with heat preservation foam ［J］. Ocean Technology, 2005, 24(2): 8992.
［9］ 金伟良.工程荷载组合理论与应用［M］.北京：机械工业出版社, 2006: 103118.
［10］ 孙炳楠,洪滔,杨骊先.工程弹塑性力学［M］.杭州：浙江大学出版社,1998: 112119.
［11］ MOHAREB M. Plastic interaction relations for pipe sections ［J］. Journal of Engineering Mechanics, 2002, 128(1): 112120.
［12］ HAUCH R S, BAI Yong. Bending moment capacity of pipes ［J］. Journal of Offshore Mechanics and Arctic Engineering, 2000, 122(4): 243252.
［13］ GU Yongning. Analysis of pipeline behaviours during laying operation ［J］. China Ocean Engineering, 1989, 3(4): 477486.
［14］ 周俊.深水海底管道S型铺管形态及施工工艺研究［D］.杭州：浙江大学,2008.
ZHOU Jun. Investigation on configuration and construction technics of Slay for deepwater submarine pipelines ［D］. Hangzhou: Zhejiang University, 2008.
［15］ API Specification 5L: specification for line pipe ［S］. Washington, D.C.: American Petroleum Institute, 2000.
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