水下生产系统防沉板结构形式改进研究

发布时间：2018-01-17 13:13

本文关键词：水下生产系统防沉板结构形式改进研究　出处：《海洋通报》2016年04期 　论文类型：期刊论文

【摘要】：防沉板是水下生产系统的重要基础形式,在海洋工程开发中有着广泛应用。基础承载能力不仅决定防沉板的适用范围,还关乎水下生产系统的稳定性与安全性。运用有限元软件ABAQUS,建立防沉板与土体的相互作用模型,通过平衡初始地应力,设置主从接触,施加重力荷载与位移约束,用Swipe法对不同结构形式防沉板进行数值模拟。比较分析多种防沉板在复合加载模式下的极限复合承载能力差异,讨论了单轴竖向承载力、V-H、H-M荷载空间破坏包络线。计算结果显示,防沉板是否有底部结构、底部结构的形式、布置以及深度对荷载位移曲线以及破坏包络线有着显著的影响。提出了通过改进防沉板结构形式以克服承载力不足的问题的建议,为拓宽防沉板的运用领域提供了参考。
[Abstract]:Anti-sinking plate is an important basic form of underwater production system, which is widely used in marine engineering development. The bearing capacity of foundation not only determines the applicable scope of anti-sinking plate. It is also related to the stability and safety of underwater production system. The interaction model of anti-settlement plate and soil is established by using the finite element software Abaqus. By balancing the initial in-situ stress, the master-slave contact is set up. Under the constraint of gravity load and displacement, the Swipe method is used to simulate the anti-sinking plate of different structural forms, and the difference of ultimate composite bearing capacity of various anti-sinking plates under the composite loading mode is compared and analyzed. The vertical bearing capacity of uniaxial bearing capacity is discussed in this paper. The calculation results show whether there is a bottom structure and the form of the bottom structure of the anti-settlement plate. The layout and depth have significant influence on the load-displacement curve and failure envelope. Some suggestions are put forward to overcome the problem of insufficient bearing capacity by improving the structure form of anti-settlement plate. It provides a reference for widening the application field of anti-sinking board.
【作者单位】：天津大学水利工程仿真与安全国家重点实验室;
【基金】：国家重点基础研究发展计划(973)(2014CB046802)
【分类号】：P754
【正文快照】： 随着海洋开发技术的发展,水下生产系统在开发深海油气田时具有明显的综合经济优势,已经成为深海油田开发的重要方式。水下生产系统的发展一定程度上影响了我国边际油田及深水油田的开发进程(宋琳等,2013)。对水下生产系统各方面的研究中,基础结构研究作为最基本的部分,影响着

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