[1]王 珂,罗金恒,杨锋平.0.8设计系数用X80管线钢失效评估曲线研究[J].焊管,2015,38(3):20-23.[doi:1001-3938(2015)03-0020-04]
 WANG Ke,LUO Jinheng,YANG Fengping.Study on Failure Assessment Curves (FAC) of X80 Pipeline Steel with 0.8 Design Coefficient[J].,2015,38(3):20-23.[doi:1001-3938(2015)03-0020-04]
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0.8设计系数用X80管线钢失效评估曲线研究
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
38
期数:
2015年第3期
页码:
20-23
栏目:
试验与研究
出版日期:
2015-03-28

文章信息/Info

Title:
Study on Failure Assessment Curves (FAC) of X80 Pipeline Steel with 0.8 Design Coefficient
文章编号:
1001-3938(2015)03-0020-04
作者:
王 珂罗金恒杨锋平
(中国石油集团石油管工程技术研究院 石油管力学和环境行为重点实验室,西安 710077)
Author(s):
WANG Ke LUO Jinheng YANG Fengping
Key Laboratory for Mechanical and Environmental Behaviors of Oil Tubular Goods,
CNPC Tubular Goods Research Institue, Xi’an 710077,China
关键词:
钢管 X80管线钢0.8设计系数 失效评估曲线 屈强比
Keywords:
steel pipe X80 pipeline steel 0.8 design coefficient failure assessment curves (FAC) yield ratio
分类号:
TE973.1
DOI:
1001-3938(2015)03-0020-04
文献标志码:
A
摘要:
为了研究西气东输三线用0.8设计系数X80管线钢断裂性能,通过单轴拉伸和断裂韧性试验建立失效评估曲线和拟合方程,对3种不同屈强比的0.8设计系数X80管线钢管进行了失效评估。结果表明:与常用X80管材的失效评估曲线不同,选择3曲线并不是最保守曲线;高、低屈强比钢管的评估曲线在载荷比大于某一临界值时发生分离,高屈强比钢管的评估曲线在低屈强比钢管的评估曲线之下;屈强比大于0.9时,安全应用范围迅速减小。
Abstract:
In order to study the fracture performance of X80 pipeline steel used for the Third West-to-East Gas Pipeline Project with 0.8 design coefficient, it set FAC and fitted equations through uniaxial elongation and fracture toughness test, and conducted FAC for 3 different yield ratio X80 pipeline steel with 0.8 design coefficient. The results indicated that the third curve is different from FAC commonly used for X80 pipeline steel, it is not the most conservative curve. The FAC of high and low yield ratio separate when the load ratio is higher than a critical value, the FAC of high yield ratio steel pipe is below that of low yield ratio steel pipe; when the yield ratio is higher than 0.9, the security application range shorten rapidly.

参考文献/References:

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备注/Memo

备注/Memo:

收稿日期:2014-10-20
作者简介:王珂(1985—),男,硕士,现主要从事油气管道和压力容器安全评价及完整性工作。

 

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