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[1]王佳音,帅健,刘道乾,等.内压作用下含体积型缺陷弯管极限载荷研究[J].中国安全生产科学技术,2019,15(9):158-163.[doi:10.11731/j.issn.1673-193x.2019.09.026]
　WANG Jiayin,SHUAI Jian,LIU Daoqian,et al.Research on ultimate load of elbow containing volumetric defects under effect of internal pressure[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2019,15(9):158-163.[doi:10.11731/j.issn.1673-193x.2019.09.026]
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内压作用下含体积型缺陷弯管极限载荷研究
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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9期
页码:
158-163
栏目:
职业安全卫生管理与技术
出版日期:
2019-09-30

文章信息/Info

Title:
Research on ultimate load of elbow containing volumetric defects under effect of internal pressure
文章编号:
1673-193X(2019)-09-0158-06
作者:
王佳音1; 帅健1; 刘道乾2; 孙伟2; 许葵1; 吕志阳1
(1.中国石油大学（北京） 安全与海洋工程学院，北京 102249；
2.中国石化销售股份有限公司华中分公司，湖北 武汉 430000)
Author(s):
WANG Jiayin1;  SHUAI Jian1;  LIU Daoqian2;  SUN Wei2;  XU Kui1;  LYU Zhiyang1
(1.College of Safety and Ocean Engineering,China University of Petroleum（Beijing）,Beijing 102249,China;
2.Central China Branch,Sinopec Sales Company,Wuhan Hubei 430000,China)
关键词:
弯管; 体积型缺陷; 塑性极限载荷; 极限内压预测公式
Keywords:
elbow; volumetric defect;  plastic ultimate load;  prediction formula of ultimate internal pressure
分类号:
X937
DOI:
10.11731/j.issn.1673-193x.2019.09.026
文献标志码:
A
摘要:
油气管道一旦发生泄漏失效容易引发爆炸等灾难性事故，而管路中的弯管段是容易发生失效的部分，弯管段承载能力的高低将影响整个管道系统的安全性。为了解决油气管线中弯管的失效问题，考虑几何和材料非线性，建立内压作用下含体积型缺陷弯管的有限元模型，并与爆破试验结果对比验证模型的有效性，确定管道的失效判定准则。研究表明影响弯管极限载荷的主要因素有缺陷的几何尺寸、相对位置以及弯曲半径。基于模拟计算，讨论各因素对含缺陷弯管极限载荷的影响规律，通过对计算结果进行非线性拟合，提出内压作用下含体积型缺陷弯管的极限内压预测公式。该公式将为含缺陷弯管的剩余强度评价和完整性评价提供一定依据。
Abstract:
Once the oil and gas pipeline has a leak failure,it is easy to cause the catastrophic accident such as explosion,and the elbow in the pipeline system is a part that is prone to occur the failure,so the bearing capacity of the elbow section will affect the safety of the whole pipeline system.In order to solve the failure problem of elbow in theoil and gas pipeline,a finite element model of elbow containing the volumetric defects under the effect of internal pressure was established considering the geometric nonlinearity and material nonlinearity.The validity of the model was verified through the comparison with the results of blasting tests,and the judgment criteria of pipeline failure were determined.The results showed that the main factors affecting theultimate load of elbow were the geometry size of defect,the relative position of defect and the bending radius of elbow.The influence of various factors on the ultimate load of elbow containing defects was discussed based on the simulation calculation,and the nonlinear fitting of the calculation results was carried out.The prediction formula of ultimate internal pressure for the elbow containing volumetric defects under the effect of internal pressure was proposed,which can provide a certain basis for the residual strength evaluation and integrity evaluation of the defective elbows.

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备注/Memo

备注/Memo:
收稿日期： 2019-08-11；数字出版日期： 2019-09-20
* 基金项目： 国家重点研发计划项目（2016YFC0802105）
作者简介： 王佳音，硕士研究生，主要研究方向为油气装备失效分析与完整性管理。
通信作者： 帅健，博士，教授，主要研究方向为油气管道安全及完整性管理相关技术。
更新日期/Last Update: 2019-10-15