华南理工大学学报(自然科学版) ›› 2015, Vol. 43 ›› Issue (6): 116-121.doi: 10.3969/j.issn.1000-565X.2015.06.018

• 力学 • 上一篇    下一篇

深海 S-lay 铺设大直径薄壁管道的奇异摄动分析

韩强 汪志钢 张永强 陶旭   

  1. 华南理工大学 土木与交通学院,广东 广州 510640
  • 收稿日期:2014-07-03 修回日期:2015-03-17 出版日期:2015-06-25 发布日期:2015-05-04
  • 通信作者: 韩强(1963-),男,教授,博士生导师,主要从事非线性力学研究. E-mail:emqhan@scut.edu.cn
  • 作者简介:韩强(1963-),男,教授,博士生导师,主要从事非线性力学研究.
  • 基金资助:
    国家自然科学基金资助项目(11132002)

Singular Perturbation Analysis of Large-Diameter and Thin-Wall Pipeline During Ultra-Deep S-lay Installation

Han Qiang Wang Zhi-gang Zhang Yong-qiang Tao Xu   

  1. School of Civil Engineering and Transportation,South China University of Technology,Guangzhou 510640,Guangdong,China
  • Received:2014-07-03 Revised:2015-03-17 Online:2015-06-25 Published:2015-05-04
  • Contact: 韩强(1963-),男,教授,博士生导师,主要从事非线性力学研究. E-mail:emqhan@scut.edu.cn
  • About author:韩强(1963-),男,教授,博士生导师,主要从事非线性力学研究.
  • Supported by:
    Supported by the National Natural Science Foundation of China(11132002)

摘要: 文中利用奇异摄动理论得到了深海管道 S-lay 铺设过程中的构型解析解,并研究了不同张紧力、水深以及海流力对管道构型及弯矩的影响. 同时,采用有限元法对深海大直径管道铺设过程进行了数值仿真,并与奇异摄动解进行了对比和验证. 理论结果表明:其他参数相同时,适当增大张紧力可使管道构型更平缓,对铺管有利;海水越深,管道的构型越陡,靠近海底处管道的弯矩峰值越大,对铺管不利;当管道受到与铺设方向相反的海流力时,海流力越大,靠近海底部管道弯矩的峰值越大,对铺管越不利.

关键词: S-lay, 薄壁管道, 奇异摄动, 解析解, 有限元法

Abstract: In this paper,the analytical solution of the pipeline during ultra-deep S-lay installation was obtained based on the theory of singular perturbation. Then,the effects of tension,water depth and current force on the pipeline's configuration and bending moment were investigated. Moreover,a numerical simulation of the pipeline installation was conducted by means of the finite element method,and the results were compared with the theoreti-cal singular perturbation solution. Theoretical results show that (1) a suitable increase in tension is good for the installation because it makes the pipeline configuration more flat; (2) deep water may result in steep configuration and large moment peak near the seabed,which is harmful to the pipeline installation; and (3) the current force has the same effect on the pipeline installation when it is opposite to the forward direction.

Key words: S-lay, thin-wall pipeline, singular perturbation, analytical solution, finite element method