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[1]黄 俊 王 懿 彭 超 陈景皓 周士军.考虑内外压差作用的海底管道撞击凹陷预测模型建立及参数敏感性分析[J].中国海上油气,2019,31(05):160-166.[doi:10.11935/j.issn.1673-1506.2019.05.018]
 HUANG Jun WANG Yi PENG Chao CHEN Jinghao ZHOU Shijun.Prediction model establishment and parameter sensitivity analysis of dent in subsea pipeline considering internal and external pressure difference[J].China Offshore Oil and Gas,2019,31(05):160-166.[doi:10.11935/j.issn.1673-1506.2019.05.018]
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考虑内外压差作用的海底管道撞击凹陷预测模型建立及参数敏感性分析()

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

卷:
第31卷
期数:
2019年05期
页码:
160-166
栏目:
海洋工程
出版日期:
2019-10-10

文章信息/Info

Title:
Prediction model establishment and parameter sensitivity analysis of dent in subsea pipeline considering internal and external pressure difference
文章编号:
1673-1506(2019)05-0160-07
作者:
黄 俊1 王 懿2 彭 超3 陈景皓4 周士军2
(1. 中海油研究总院有限责任公司 北京 100028; 2. 中国石油大学(北京)安全与海洋工程学院 北京 102249; 3. 中国石油物资有限公司 北京 100029; 4. 北京石油化工学院机械工程学院 北京 102617)
Author(s):
HUANG Jun1 WANG Yi2 PENG Chao3 CHEN Jinghao4 ZHOU Shijun2
(1. CNOOC Research Institute Co., Ltd., Beijing 100028, China; 2. School of Safety and Ocean Engineering, China University of Petroleum, Beijing 102249, China; 3. China Petroleum Materials Co., Ltd., Beijing 100029, China; 4. School of Mechanical Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China)
关键词:
海底管道 管道内外压差 撞击力 凹陷深度 预测模型 参数敏感性
Keywords:
subsea pipeline pressure difference inside and outside the pipeline impact force dent depth prediction model parameter sensitivity
分类号:
TE832
DOI:
10.11935/j.issn.1673-1506.2019.05.018
文献标志码:
A
摘要:
针对海底管道受撞击损伤问题,基于塑性基础弦模型将管道的弯曲及轴向拉伸与塑性地基弦的地基反力及轴力相类比,从而将海底管道变形分为纵向的拉伸和环向的弯曲,进而建立了管道两端固支条件下考虑内外压差影响的撞击凹陷预测模型,通过与规范中推荐的经验公式及有限元模拟结果的对比验证了预测模型的可靠性。通过参数敏感性研究分析了管道撞击凹陷深度的主要影响因素,包括内外压差、径厚比及塑性区的边界等,结果表明:对受撞击的海底管道,管道内部流体在承受撞击力的过程中也起到了不可忽视的能量吸收作用,且在同样大小的撞击力条件下,管道压力等级越大,管道的径厚比越大,塑性区边界长度越短,其凹陷深度越小,但径厚比增加到一定程度后对减小凹陷的影响是有限的。本文研究可为海底管道的设计和安全评估提供新的参考依据。
Abstract:
In view of the impact damage of subsea pipelines, in this paper, the bending and axial extension of the pipe are compared with the foundation reaction force and axial force of the plastic foundation string based on the plastic foundation string model. The deformation of the subsea pipeline is divided into the longitudinal extension and toroidal bending. The dent prediction model under the condition of fixed support at both ends of the pipeline is established considering the influence of internal and external pressure differences in subsea pipeline The reliability of the prediction model is verified by comparing the results of the prediction model with those of the empirical formulas and the finite element model recommended in the specification. Through parameter sensitivity research, the main factors affecting the pipeline dent depth are analyzed, including internal and external pressure difference, diameter-thickness ratio and plastic zone boundary. The results show that fluid in the subsea pipeline under impact load also plays a nonnegligible role in absorbing impact force. Besides, with the same magnitude of impact force, the larger the pressure grade, the larger the diameter- thickness ratio and the shorter the boundary length of the plastic zone, the smaller the dent depth. However, the role which the diameter-thickness ratio plays in reducing the dent is limited after it is increased to a certain extent. The study in this paper provides a new reference for the design and safety assessment of subsea pipelines.

参考文献/References:

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备注/Memo

备注/Memo:
*国家重点研发计划项目课题八“新一代水下生产系统关键力学基础科学的理论研究(编号:2016YFC0303708)”、深水油气管线关键技术与装备北京市重点实验室开放基金“考虑管土相互作用的海底管道撞击损伤机理研究(编号:BIPT2018005)”部分研究成果。 第一作者简介: 黄俊,男,高级工程师, 2001 年毕业于华南理工大学建筑工程专业,现主要从事海底管道结构的设计和研究工作。地址:北京市朝阳区太阳宫南街6号院(邮编:100028)。E-mail:huangjun1@cnooc.com.cn。
更新日期/Last Update: 1900-01-01