焊管Issue(3)：20-23,28,5.
0.8设计系数用X80管线钢失效评估曲线研究
Study on Failure Assessment Curves (FAC) of X80 Pipeline Steel with 0.8 Design Coefficient
王珂 1罗金恒 1杨锋平1
作者信息
- 1. 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
- 折叠
摘要
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.关键词
钢管/X80管线钢/0.8设计系数/失效评估曲线/屈强比Key words
steel pipe/X80 pipeline steel/0.8 design coefficient/failure assessment curves (FAC)/yield ratio分类
能源科技引用本文复制引用
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,(3):20-23,28,5.
