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工程设计学报
工程设计学报  2020, Vol. 27 Issue (6): 698-706    DOI: 10.3785/j.issn.1006-754X.2020.00.085
保质设计     
极端海况下FPSO模块支墩的动态力学分析与试验研究
李琴1,2, 陈言1,2, 黄志强1,2, 高兆鑫3, 陈振1,2, 敬爽1,2, 付春丽3
1.西南石油大学 机电工程学院， 四川 成都 610500
2.石油天然气装备教育部重点实验室， 四川 成都 610500
3.中国石油集团海洋工程有限公司， 山东 青岛 266000
Dynamic mechanical analysis and experimental study of FPSO module stool in extreme sea conditions
LI Qin1,2, CHEN Yan1,2, HUANG Zhi-qiang1,2, GAO Zhao-xin3, CHEN Zhen1,2, JING Shuang1,2, FU Chun-li3
1.School of Mechanical and Electrical Engineering， Southwest Petroleum University， Chengdu 610500， China
2.Key Laboratory of Oil and Gas Equipment， Ministry of Education， Chengdu 610500， China
3.CNPC （China National Petroleum Corporation） Offshore Engineering Co.， Ltd.， Qingdao 266000， China
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摘要： 浮式生产储油卸油装置（floating production storage and offloading，FPSO）是集油气生产、存储及外输于一体的高度集成的模块化高端海洋工程装备，在南海的极端海况下其模块支墩的安全性和稳定性直接影响海上油气生产作业的安全。为此，基于水动力学分析和耐波性理论分析，研究在南海典型海域的极端海况条件下FPSO的运动响应规律，结合有限元方法对其整体模型进行动态力学分析，并进行模块支墩的强度分析和安全评价；采用相似理论设计了缩尺比为1∶10的试验模型，开展用六自由度平台模拟海况的模拟试验。结果表明：随着南海海况恶劣程度的提高，横摇运动幅值增大，模块支墩变形和受力增大，应力集中现象明显；应力主要集中在斜支撑肘板，其屈服强度符合标准要求；关键点ZD1-N3、ZD2-N4处最大应力测试值与仿真值的相对误差分别为16%，10%，验证了有限元动态力学分析结果具有较高的准确性；增加肘板筋板厚度和改善支墩结构是提高支墩结构强度的有效方式。研究为FPSO模块支墩的设计和建造提供了理论指导。
Abstract: Floating production storage and offloading (FPSO) is a highly integrated and modular high-end marine engineering equipment that integrates oil and gas production, storage and export. In the extreme sea conditions in the South China Sea, the safety and stability of FPSO module stools directly affect the safety of offshore oil and gas production operations. Based on the hydrodynamic analysis and theoretical analysis of seakeeping, the motion response law of FPSO in extreme sea conditions in typical sea areas of the South China Sea was studied. Dynamic mechanical analysis of the whole FPSO module combined with the finite element method and the strength analysis and safety evaluation of the module stools were carried out. A test mode with a scale ratio of 1∶10 was designed using similar theory, and the test of simulating sea conditions was carried out with a six-degree-of-freedom platform. The result showed that with the increase of the severity of sea conditions in the South China Sea, the amplitude of rolling motion increased, the deformation and stress on module stools increased and the stress concentration phenomenon was obvious. The stress was mainly concentrated on the diagonal brace bracket and its yield strength met the standard requirement. The relative errors of the maximum stress test value and simulation value of key points of ZD1-N3 and ZD2-N4 were 16% and 10% respectively, which proved that the finite element dynamic mechanical analysis result had high accuracy. Increasing the thickness of rib plate and improving the structure of stool were effective ways to improve the structural strength of stool. The research provides theoretical guidance for the design and construction of FPSO module stool.
收稿日期: 2019-05-16 出版日期: 2020-12-25
CLC:  TH 113.22  
基金资助: 中国石油天然气集团科学研究与技术开发项目（2016A-10）
作者简介: 李琴（1970—），女，四川江油人，副教授，硕士生导师，硕士，从事深水油气开发及海洋工程关键技术等研究，E-mail:905973416@qq.com，https://orcid.org/0000-0001-9838-2390；
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引用本文:

李琴, 陈言, 黄志强, 高兆鑫, 陈振, 敬爽, 付春丽. 极端海况下FPSO模块支墩的动态力学分析与试验研究[J]. 工程设计学报, 2020, 27(6): 698-706.

LI Qin, CHEN Yan, HUANG Zhi-qiang, GAO Zhao-xin, CHEN Zhen, JING Shuang, FU Chun-li. Dynamic mechanical analysis and experimental study of FPSO module stool in extreme sea conditions. Chinese Journal of Engineering Design, 2020, 27(6): 698-706.

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https://www.zjujournals.com/gcsjxb/CN/10.3785/j.issn.1006-754X.2020.00.085    或    https://www.zjujournals.com/gcsjxb/CN/Y2020/V27/I6/698

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