中国机械工程 ›› 2025, Vol. 36 ›› Issue (11): 2801-2809.DOI: 10.3969/j.issn.1004-132X.2025.11.039

• 工程前沿 • 上一篇    

斜逆断层作用下的油气管道应变极值表征方法

高祥冲1(), 刘培君2, 陈换过1(), 彭程程3, 宋树家1, 林子竣1   

  1. 1.浙江理工大学机械工程学院, 杭州, 310018
    2.杭州励贝电液科技有限公司, 杭州, 310013
    3.杭州聆为信息技术有限公司, 杭州, 311215
  • 收稿日期:2024-12-09 出版日期:2025-11-25 发布日期:2025-12-09
  • 通讯作者: 陈换过
  • 作者简介:高祥冲,男,1998年生,硕士研究生。研究方向为埋地油气管道的在线监测与安全预警。E-mail:chacegao@qq.com
    陈换过*(通信作者),女,1977年生,教授、博士研究生导师。研究方向为机械零部件可靠性、结构健康监控、故障诊断等。E-mail: hgchen@zstu.edu.cn
    第一联系人:李成展,男,1999年生,硕士研究生。研究方向为整车性能优化和车身钢镁连接技术。E-mail: lichengzhan12@163.com。郭鹏程*(通信作者),男,1985年生,副教授。研究方向为整车多学科多目标优化设计及车身用高强钢和铝镁合金成形技术。发表论文80余篇。E-mail: gpch860429@163.com
  • 基金资助:
    国家自然科学基金(51975535);国家重点研发计划项目(2021YFB3301601)

Strain Extremum Characterization Method for Oil and Gas Pipelines under Oblique Reverse Faults

Xiangchong GAO1(), Peijun LIU2, Huanguo CHEN1(), Chengcheng PENG3, Shujia SONG1, Zijun LIN1   

  1. 1.College of Mechanical Engineering,Zhejiang Sci-Tech University,Hangzhou,310018
    2.Hangzhou Libei Electro-Hydraulic Technology Co. ,Ltd. ,Hangzhou,310013
    3.Hangzhou Lingwei Information Technology Co. ,Ltd. ,Hangzhou,311215
  • Received:2024-12-09 Online:2025-11-25 Published:2025-12-09
  • Contact: Huanguo CHEN

摘要:

长输管道在斜逆断层作用下更易发生较大变形,并且其应变极值难以精确表征,无法准确反映管道真实变形情况。针对这一问题,提出了一种基于应变传感器监测的管道应变极值表征方法,以提高埋地长输管道应变监测的精度和预警能力。构建了管-土耦合有限元模型,分析斜逆断层作用下管道的变形规律,并对模型的准确性进行验证;基于Stacking集成学习构建了高精度的拉压应变极值表征模型;最后建立管道应变数据集,将管道3、9、12点钟方向沿断层两侧各20倍管径的应变数据用于训练模型,该模型能够在多维非线性条件下精确拟合管道的应变特性,有效捕捉斜逆断层作用下管道的应力集中与变形模式。研究结果表明,所提出的应变极值表征方法能准确反映斜逆断层作用下管道的最大拉压应变,对管道变形监测与预警具有重要的工程应用价值。

关键词: 斜逆断层, 油气管道, 大应变, 监测, 有限元仿真

Abstract:

Long-distance pipelines were more susceptible to significant deformation under the influences of oblique reverse faults, and their strain extremums were difficult to accurately characterize, making it challenging to reflect the actual deformation states of the pipelines. To address this issue, a strain extremum characterization method for pipelines was proposed based on strain sensor monitoring to enhance the accuracy and early warning capability of buried long-distance pipeline strain monitoring. A pipe-soil coupling finite element model was established to analyze the deformation behavior of pipelines under oblique reverse faults, and the accuracy of the model was validated. Then, a high-precision tensile and compressive strain extremum characterization model was constructed using Stacking ensemble learning. Finally, a pipeline strain dataset was established, the strain data from the 3, 9 and 12 o' clock positions along the pipelines within 20 times the pipe diameter on both sides the fault was utilized to train the model. This model accurately fits the strain characteristics of the pipelines under multidimensional nonlinear conditions, effectively capturing stress concentration and deformation patterns induced by oblique reverse faults. The results show that the proposed strain extremum characterization method may precisely reflect the maximum tensile and compressive strains of pipelines under oblique reverse faults, providing significant engineering value for pipeline deformation monitoring and early warning systems.

Key words: oblique reverse fault, oil and gas pipeline, large strain, monitoring, finite element simulation

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