Evaluation of surface crack damage on semi-submersible platform

doi:10.7623/syxb200601028

Editorial office of ACTA PETROLEI SINICA ›› 2006, Vol. 27 ›› Issue (1): 128-131,144.DOI: 10.7623/syxb200601028

• Petroleum Engineering • Previous Articles Next Articles

Evaluation of surface crack damage on semi-submersible platform

Li Jie^1,2, Duan Menglan², Zhou Songmin³, Zhang Wen¹

1. Department of Mechanics and Engineering, Fudan University, Shanghai 200433, China;
2. China Classification Society, Beijing 100006, China;
3. Oilfield Service Company Limited, CNOOC, Zhanjiang 524057, China

Received:2005-04-04 Revised:2005-06-30 Online:2006-01-25 Published:2010-05-21

半潜式钻井平台表面裂纹损伤评价

李杰^1,2, 段梦兰², 周松民³, 张文¹

1. 复旦大学力学与工程科学系上海 200433;
2. 中国船级社北京 100006;
3. 中海油田服务有限公司广东湛江 524057

作者简介:李杰,男,1973年3月生,2003年获天津大学博士学位,现为复旦大学力学与工程科学系博士后,中国船级社工业总公司工程师,主要研究方向为海洋工程结构的强度、疲劳与断裂.E-mail:jli@ccsi.com.cn
基金资助:
中国海洋石油总公司项目(02GNH0517C)"南海五号钻井平台设计条件下最低强度研究"资助.

Abstract

Abstract: The global structure analysis and local crack evaluation on the semi-submersible platform servicing in South China Sea were carried out by finite element method and fracture mechanics theory.The fracturing parameters for describing the cracks and their propagation on the local shell plate of the platform were determined.The effects of local shell plate corrosion factor on the fracturing parameters distributed around the crack tip were investigated using ABAQUS software.The global structural strength evaluation to obtain the necessary boundary conditions for the analysis of local fracture was made.The distribution of stress intensity factor along crack front was analyzed by the fracture mechanics.

Key words: semi-submersible platform, surface crack, fracture mechanics, stress intensity factor, finite element analysis

摘要： 以南海现役某半潜式钻井平台的表面裂纹为研究对象,用有限元法和断裂力学理论,对平台结构整体及裂纹尖端局部断裂力学进行了分析,确定了描述裂纹及其在钻井平台局部扩展的力学参量.采用ABAQUS软件构造板壳结构表面裂纹,研究了决定裂纹扩展的断裂力学参量以及腐蚀等因素对裂纹尖端断裂力学参量分布的影响,为含裂纹平台结构安全评估提供一种科学的方法.

关键词: 半潜式钻井平台;表面裂纹;断裂力学;应力强度因子;有限元分析

CLC Number:

TE851

Li Jie, Duan Menglan, Zhou Songmin, Zhang Wen. Evaluation of surface crack damage on semi-submersible platform[J]. Editorial office of ACTA PETROLEI SINICA, 2006, 27(1): 128-131,144.

李杰, 段梦兰, 周松民, 张文. 半潜式钻井平台表面裂纹损伤评价[J]. 石油学报, 2006, 27(1): 128-131,144.

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Evaluation of surface crack damage on semi-submersible platform

半潜式钻井平台表面裂纹损伤评价

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