天然气与石油2025，Vol.43Issue(2)：99-106,8.DOI:10.3969/j.issn.1006-5539.2025.02.013
基于CEL方法的黏土环境下海底管道初始沉降研究
Study on initial embedment of submarine pipeline in clay environment based on the CEL method
何杨 1赵洪扬 1赵党 1张润东 1李传龙 1丁力2
作者信息
- 1. 海洋石油工程股份有限公司,天津 300451
- 2. 天津市科技创新发展中心,天津 300220
- 折叠
摘要
Abstract
In the development of offshore oil and gas deepwater field,pipelines are often laid directly on the sea bed.The initial embedment generated during installation is the basic data for stability and lateral buckling calculation,making it particularly important to evaluate the initial embedment of pipelines accurately.This paper studies the initial embedment of submarine pipeline in clay environment using the Coupled Eulerian-Lagrangian(CEL)method in finite element software ABAQUS.The DNV-RP-F114 Pipe-soil interaction for submarine pipelines(hereinafter referred to as DNV-RP-F114)method is used for comparison and verification.The study clarifies the morphological changes,stress response and the development pattern of plastic zones in the clay seabed during pipeline sinking.Additionally,the influence of soil with different strengths and friction coefficients on the initial embedment of pipeline is analyzed.The results show that,compared with the DNV-RP-F114 method,the initial embedment calculated using the CEL method is smaller.The numerical model conforms to the soil mechanics principles,showing that the pipeline initial embedment is significantly affected by soil strength,while the change of friction coefficient has a minimal effect.The research results can provide reference for the analysis of initial embedment of submarine pipelines and guidance for the structural design of submarine pipelines.关键词
海底管道/黏土海床/初始沉降/有限元/欧拉—拉格朗日耦合方法Key words
Submarine pipeline/Clay seabed/Initial embedment/Finite element/Coupled Eulerian-Lagrangian(CEL)method引用本文复制引用
何杨,赵洪扬,赵党,张润东,李传龙,丁力..基于CEL方法的黏土环境下海底管道初始沉降研究[J].天然气与石油,2025,43(2):99-106,8.
