海洋工程装备与技术

海洋工程装备与技术 ›› 2023, Vol. 10 ›› Issue (2): 145-151.

• • 上一篇    

大管径海底管道J型铺设分析

黄俊1, 李少杰2, 康庄2   

  1. 1. 中海油研究总院，北京，100000；

    2．哈尔滨工程大学船舶工程学院，哈尔滨  150001

  • 出版日期:2023-07-02 发布日期:2023-07-02

Analysis of J-Lay Laying of Large Diameter Submarine Pipeline

Huang Jun1, LI Shaojie2, KANG Zhuang2   

  1. 1. Offshore Oil Engineering Co., Ltd., Tianjin 300451, China;  2. College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, China
  • Online:2023-07-02 Published:2023-07-02

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摘要： J型铺设由于其良好的管线下放形态，是目前大管径深水海底管道最适用的铺设方式。针对大直径海底管道J型铺设下放过程，本文采用悬链线理论进行管道铺设静态分析，探究铺设角度和水深对管线受力的影响，以确定大直径海底管道在不同作业水深的最佳铺设角度。基于商业软件OrcaFlex开展管道铺设过程中时域动态分析，研究铺管船运动、海洋环境及管道破损状态下管道上张力和应力变化情况，可为实际工程提供参考。

关键词: 大直径海底管道, J型铺设, 静态分析, 时域分析, 参数分析

Abstract:

J-Lay system has been the most suitable laying method for large diameter subsea pipeline at present because of its advantageous pipeline laying form. In the process of laying large diameter submarine pipeline with J-Lay system, the effect of laying angle and water depth on the pipeline is of critical importance. Therefore, based on the catenary theory, the static analysis considering the factors above has been carried out in order to determine the suitable laying angle of large diameter submarine pipeline under different water depths. In addition, the time domain dynamic analysis has been conducted to study the influence of ship motion, current incidence angle and existing pipeline damage on the dynamic stress of pipeline, and the results can server as reference for engineering practice.

Key words: large diameter submarine pipeline, J-Lay system; static analysis, time domain analysis, parameter analysis