西南石油大学学报(自然科学版) ›› 2021, Vol. 43 ›› Issue (6): 71-83.DOI: 10.11885/j.issn.1674-5086.2020.12.04.02

• 力学专刊 • 上一篇    下一篇

滑坡下成品油管道力学响应研究

蒋宏业1, 兰旭彬1, 王金荣3, 胡海洋2, 王涛3   

  1. 1. 西南石油大学石油与天然气工程学院, 四川 成都 610500;
    2. 中国石油天然气管道工程有限公司, 河北 廊坊 065000;
    3. 中航油彭州管道运输有限公司, 四川 成都 610500
  • 收稿日期:2020-12-04 发布日期:2022-01-08
  • 通讯作者: 兰旭彬,E-mail:2267266634@qq.com
  • 作者简介:蒋宏业,1974年生,男,汉族,四川南充人,副教授,主要从事油气储运系统完整性管理和金属腐蚀与防护方面的研究。Email:j822422@126.com;兰旭彬,1994年生,男,汉族,黑龙江齐齐哈尔人,主要从事滑坡等地质灾害下油气管道力学分析与防护的研究。E-mail:2267266634@qq.com;王金荣,1979年生,男,汉族,山东潍坊人,工程师,主要从事油料储运以及安全管理与技术研究。E-mail:wangjr@cnaf.com;胡海洋,1994年生,男,汉族,山东淄博人,硕士,工程师,主要从事站场设计及应力计算。E-mail:swpu_hu@163.com;王涛,1975年生,男,汉族,陕西榆林人,工程师,主要从事油料储运及安全管理与技术研究。E-mail:wangtao1234@cnaf.com
  • 基金资助:
    国家自然科学基金(51674212)

A Study on Mechanical Response of Product Oil Pipeline under Landslide

JIANG Hongye1, LAN Xubin1, WANG Jinrong3, HU Haiyang2, WANG Tao3   

  1. 1. School of Oil and Natural Gas Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, China;
    2. China Petroleum Pipeline Engineering Co., Ltd., Langfang, Hebei 065000, China;
    3. China Aviation Oil Pengzhou Pipeline Transportation Co., Ltd., Chengdu, Sichuan 610500, China
  • Received:2020-12-04 Published:2022-01-08

摘要: 针对于管道横穿滑坡体存在的潜在危害,基于光滑粒子流体动力学与有限元耦合算法(SPH-FEM)构建土-管-油完全耦合模型,综合考虑材料、几何及接触非线性,分析土-管-油作用机制,并探讨滑坡体位移、埋深及径厚比等主要因素对管道力学行为的影响。研究表明,相比于简化为内压的油管(存在内压的空管),当考虑管内成品油存在时,均存在滑坡作用下管道典型的损伤行为,但在满管输送工况下,管内成品油的作用由滑坡初始时刻的“抗变”转变为“助变”,且对管道位移形变产生更大的影响,与简化空管相比,其位移增加了10.63%(应力增加了4.96%);随滑坡体位移、滑坡规模的增大及埋深的减小(对于敷设于滑坡中部的管道),会产生更大位移及塑性形变区域;对于穿越滑坡区的管道,可适量增加壁厚以增强管道极限承载能力。研究所得成果可为保障管道安全运行及滑坡灾害下管道防护给予理论指导与技术支持。

关键词: 滑坡, 成品油管道, 力学响应, SPH-FEM耦合算法, 有限元分析

Abstract: In view of the potential hazards of pipeline crossing the landslide, a fully coupled soil-pipeline-oil model is established based on Smooth Particle Hydrodynamics and Finite Element coupling algorithm (SPH-FEM), considering material, geometry and contact nonlinearity, the action mechanism of soil-pipeline-oil is analyzed, and the influence of landslide displacement, buried depth and diameter-thickness ratio on pipeline physical behavior is discussed. According to the working conditions, the results show that, compared to a oil pipeline simplified to internal pressure (an empty pipeline with internal pressure), when considering the presence of product oil in the pipeline, all of them show typical damage behavior under the action of landslide. However, under the full pipeline transportation condition, the action of the product oil in the pipe changes from " anti-deformation" at the initial moment of landslide to " assisting deformation", and has a greater impact on the displacement and deformation of the pipe body. Compared with the simplified empty pipeline, its displacement increased by 10.63% (stress increased by 4.96%). With the displacement of landslide, the increase of landslide scale and the decrease of buried depth of pipeline (for the pipeline laid in the center of landslide), greater displacement and plastic deformation area will be generated. For the pipeline crossing the landslide area, the wall thickness can be appropriately increased to enhance the ultimate bearing capacity of the pipeline. The research results can provide theoretical guidance and technical support for pipeline safety operation and pipeline protection under landslide disaster.

Key words: landslide, product oil pipeline, mechanical response, SPH-FEM coupling algorithm, finite element analysis

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