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[1]吕彦伟,刘钦节,付强,等.基于紧凑拉伸试验的含缺陷燃气管疲劳寿命预测分析[J].中国安全生产科学技术,2019,15(11):96-101.[doi:10.11731/j.issn.1673-193x.2019.11.015]
　LYU Yanwei,LIU Qinjie,FU Qiang,et al.Analysis on fatigue life prediction of gas pipeline containing defect based on compact tensile test[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2019,15(11):96-101.[doi:10.11731/j.issn.1673-193x.2019.11.015]
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基于紧凑拉伸试验的含缺陷燃气管疲劳寿命预测分析
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
15
期数:
2019年11期
页码:
96-101
栏目:
职业安全卫生管理与技术
出版日期:
2019-11-30

文章信息/Info

Title:
Analysis on fatigue life prediction of gas pipeline containing defect based on compact tensile test
文章编号:
1673-193X(2019)-11-0096-06
作者:
吕彦伟; 刘钦节; 付强; 袁宏永; 付明
(1.安徽理工大学 能源与安全学院，安徽 淮南 232001；
2.深部煤矿采动响应与灾害防控国家重点实验室，安徽 淮南 232001；
3.清华大学 合肥公共安全研究院，安徽 合肥 320601)
Author(s):
LYU Yanwei;  LIU Qinjie;  FU Qiang;  YUAN Hongyong;  FU Ming
(1.School of Energy and Security,Anhui University of Science and Technology,Huainan Anhui 232001,China;
2.State Key Laboratory of Mining Response and Disaster Prevention and Control of Deep Coal Mine,Huainan Anhui 232001,China;
3.Hefei Institute for Public Safety Research,Tsinghua University,Hefei Anhui 320601,China)
关键词:
含缺陷管道; 疲劳寿命; 裂纹扩展; 应力强度因子
Keywords:
pipeline containing defect;  fatigue life;  crack growth;  stress intensity factor
分类号:
X937；TE88
DOI:
10.11731/j.issn.1673-193x.2019.11.015
文献标志码:
A
摘要:
为分析预测含缺陷燃气管道的疲劳寿命，实现燃气管道分类分级监测和维护。在理论分析含缺陷管道疲劳寿命预测模型的基础上，通过MTS电液伺服疲劳试验机测试获得同一应力比下4种不同应力强度因子的疲劳裂纹扩展速率，进而构建含缺陷燃气管道疲劳寿命的实用模型。以安徽淮南天然气二气源管道工程实际参数为例，预测分析类似条件下含缺陷燃气管道的疲劳寿命，为燃气管道监测维护与分类分级管理提供可靠依据。结果表明：管道的疲劳寿命与裂纹深度变化近似成线性关系，与内压幅值变化近似成指数为负的幂函数关系，且管道输送压力变化幅值不应超过1.5 MPa。
Abstract:
In order to analyze and predict the fatigue life of gas pipeline containing defect,and achieve the classification and gradation monitoring and maintenance of gas pipeline,on the basis of theoretical analysis on the fatigue life prediction model of pipeline containing defects,the fatigue crack growth rates of four different stress intensity factors under the same stress ratio were measured by the MTS electrohydraulic servo fatigue testing machine,and then a practical model for the fatigue life of gas pipeline containing defect was constructed.Taking the actual parameters of the second natural gas source pipeline project in Huainan,Anhui province as an example,the fatigue life of gas pipeline containing defect under the similar conditions was predicted and analyzed to provide the reliable basis for monitoring,maintenance and classification and gradation management of gas pipelines.The results showed that the fatigue life of pipeline presented the approximately linear relationship with the change of crack depth,while presented the approximately negative exponential power function relationship with the change of internal pressure amplitude,and the variation amplitude of pipeline transportationconveying pressure should not exceed 1.5 MPa.

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备注/Memo

备注/Memo:
收稿日期： 2019-10-27；数字出版日期： 2019-11-27
* 基金项目： 安徽省自然科学基金项目(1708085ME133)；安徽省高校优秀拔尖人才培养项目（gxyqZD201925）
作者简介： 吕彦伟，硕士研究生，主要研究方向为地下工程监测与可靠性分析。
通信作者： 刘钦节，博士，副教授，主要研究方向为工程力学。
更新日期/Last Update: 2019-12-25