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[1]黄志强,汤海平,丁雅萍,等.X80管道焊接残余应力分析与预测[J].中国安全生产科学技术,2016,12(8):146-152.[doi:10.11731/j.issn.1673-193x.2016.08.025]
 HUANG Zhiqiang,TANG Haiping,DING Yaping,et al.Analysis and prediction on welding residual stress of X80 pipeline[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2016,12(8):146-152.[doi:10.11731/j.issn.1673-193x.2016.08.025]
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X80管道焊接残余应力分析与预测
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
12
期数:
2016年8期
页码:
146-152
栏目:
现代职业安全卫生管理与技术
出版日期:
2016-08-30

文章信息/Info

Title:
Analysis and prediction on welding residual stress of X80 pipeline
作者:
黄志强1 汤海平1 丁雅萍2 黄艺湄1 张天行1
(1 西南石油大学 机电工程学院,四 川 成都 610500;2 四川建筑职业技术学院 交通与市政工程系,四川 成都 610399)
Author(s):
HUANG Zhiqiang1 TANG Haiping1 DING Yaping2 HUANG Yimei1 ZHANG Tianxing1
(1.School of Mechatronic Engineering, Southwest Petroleum University, Chengdu Sichuan 610500, China; 2.Depart of Traffic and Municipal Engineering, Sichuan College of Architectural Technology, Chengdu Sichuan 610399, China)
关键词:
多层多道焊残余应力X80管道回归分析数值模拟
Keywords:
multi-pass welding residual stress X80 pipeline regression analysis numerical simulation
分类号:
X937
DOI:
10.11731/j.issn.1673-193x.2016.08.025
文献标志码:
A
摘要:
针对焊接残余应力对油气管道的不利影响,采用基于有限元方法对西气东输X80 管道焊接接头的轴向和径向残余应力进行了数值模拟,并通过参数敏感性分析,研究了 焊接线能量和层间温度的对轴向残余应力和径向残余应力的影响规律。结果表明:轴向 残余应力随着焊接线能量和层间温度的升高而增大,而径向残余应力呈减小趋势;近焊 缝区的径向残余应力较中间层小,轴向残余应力较远焊缝区大。根据研究结果,提出了 最大残余应力的预测模型和减小焊接残余应力的措施,为保障我国在役X80油气管道的 安全生产具有重要意义。
Abstract:
Aiming at the adverse effect of welding residual stress on oil and gas pipeline, the axial and radial residual stresses of welded joints on West East Gas Transmission X80 pipeline were numerically simulated based on the finite element analysis. The influence laws of welding heat input and interpass temperature on the radial and axial residual stress were studied through the parameter sensitivity analysis. The results showed that the axial residual stress tends to increase in general with the increasing of welding heat input and interpass temperature, while the radial residual stress tends to decrease. The radial residual stress near the weld zone is smaller than that of the intermediate layer, while the axial residual stress is larger than that far away from the weld zone. According to the results, the prediction model of the maximum residual stress and the measures to decrease the welding residual stress were put forward, which are important to guarantee the work safety of in-service X80 oil and gas pipelines in China.

参考文献/References:

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备注/Memo

备注/Memo:
西南石油大学博士基金项目(CX2014BY07)
更新日期/Last Update: 2016-08-30