[1]张豫,朱立,李乃贤,等.X80钢级Φ1 016 mm管道四点弯曲试验数值分析[J].焊管,2022,45(8):10-16.[doi:10.19291/j.cnki.1001-3938.2022.08.002]
 ZHANG Yu,ZHU Li,LI Naixian,et al.Numerical Analysis of X80 Steel Grade 1016 mm Pipe Four-point Bending Test[J].,2022,45(8):10-16.[doi:10.19291/j.cnki.1001-3938.2022.08.002]
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X80钢级Φ1 016 mm管道四点弯曲试验数值分析()
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
45
期数:
2022年第8期
页码:
10-16
栏目:
试验与研究
出版日期:
2022-08-28

文章信息/Info

Title:
Numerical Analysis of X80 Steel Grade 1016 mm Pipe Four-point Bending Test
文章编号:
10.19291/j.cnki.1001-3938.2022.08.002
作者:
张豫朱立李乃贤贾彬刘雅晴
1.四川德源管道科技股份有限公司,成都610095;2.西南科技大学土木工程与建筑学院,四川绵阳621010
Author(s):
ZHANG YuZHU LiLI NaixianJIA BinLIU Yaqing
1. Sichuan Deyuan Pipeline Technology Co,Ltd.,Chengdu 610095,China; 2. School of Civil Engineering and Architecture,Southwvest University of Science and Technology,Mianyang 621010,Sichuan,China
关键词:
X80钢级管道四点弯曲试验数值模拟轴向应变分布管道弯矩分布
Keywords:
X80 steel grade pipefour-point bending testnumerical simulationaxial strain distributionpipe bending moment distribution
分类号:
TG115
DOI:
10.19291/j.cnki.1001-3938.2022.08.002
文献标志码:
A
摘要:
为了保证管道在四点弯曲试验时有足够长的区域满足纯弯曲条件,通过有限元模拟分析了X80钢级Φ1 016 mm管道全尺寸四点弯曲试验时管道弯矩、剪力和轴向应变分布,以及管道在集中力作用下的轴向应变分布。结果表明:从内力角度来看,四点弯曲试验时,两个加载压头之间的管道满足纯弯曲条件;从轴向应变角度来看,四点弯曲试验时,管道中部2 m范围的区域满足纯弯曲条件;加载压头处管道会产生应变突变并产生一定范围的影响;长度12 m的X80钢级Φ1 016 mm管道在四点弯曲试验时,应保证加载压头之间的间距≥4 m,从而保证管道中部至少有2 m长的区域满足纯弯曲条件。研究成果可为大直径管道全尺寸四点弯曲试验的开展提供理论依据。
Abstract:
In order to ensure that the pipe has enough length to meet the pure bending condition in the four-point bending test,the distribution of bending moment,shear force and axial strain of X80 steel grade Φ1 016 mm pipe under full-size four-point bending test and axial strain distribution under concentrated force were analyzed by finite element method. The results show that from the angle of internal force,the pipe between two loading heads meets the pure bending condition in four-point bending test. From the angle of axial strain,the area within 2 m in the middle of the pipe in four-point bending test meets the pure bending condition. Strain mutation will occur in the pipe at the loading head and affect a certain range. In the four-point bending test of 12 m X80 steel grade Φ1 016 mm pipe,the spacing between loading heads should be≥4 m to ensure that at least 2 m long area in the middle of the pipe meets the pure bending condition. The research results can provide reference for the development of full-size fourpoint bending test of large-diameter pipelines.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2022-04-21基金项目:四川省科技厅青年科技创新研究团队项目“高效抗爆刚-柔耦合复合防护结构设计”(项目编号2020JDTD0021)。作者简介:张豫(1985—),男,硕士,工程师,现从事管道完整性管理研究工作。
更新日期/Last Update: 2022-08-26