摘要
环焊接头结构完整性在很大程度上决定了高钢级管道能否安全运行。从焊缝金属强韧性指标设计方法、国内外管道工程设计标准中的强韧性验收指标、焊缝金属强韧性测试方法 3个方面总结了目前国内外关于焊缝金属强韧性指标的研究及工程应用现状。从断裂韧性的裂尖拘束效应、管道环焊接头断裂行为的数值模拟方法、裂纹驱动力评价技术、失效评估图评价技术、管道环焊接头应变承载能力预测方法、全尺寸管道环焊接头断裂试验等方面探讨了适用性评价技术涉及的关键问题及其研究进展。提出了当前高钢级管道环焊接头力学性能与适用性评价研究中存在的问题及尚待深入研究的方向,以期为提高高钢级管道环焊接头的本质安全水平提供理论支撑与技术支持。
The girth weld is the weak link of high-grade pipeline, and its structural integrity affects the safety of pipeline operation. Herein, the state of art of the weld metal strength and toughness indicators were discussed from three aspects: the design method of weld metal strength and toughness indicators, the strength and toughness acceptance indicators proposed by pipeline engineering design standards, and the test method of weld metal strength and toughness. The fitness-for-service assessment methods of pipeline girth weld were expounded. The key problems and progress of the assessment methods were discussed: the crack tip constraint effect of fracture toughness, the numerical simulation method of fracture behavior of pipeline girth weld, the evaluation method of crack driving force, the assessment method of failure evaluation diagram, the prediction method of tensile strain capacity of pipeline girth weld, and the fracture experimental test of full-scale pipeline girth weld. Finally, the existing problems and future research directions in the mechanical properties and fitness-for-service assessment of high-grade pipeline girth weld were put forward. Generally, the research results could provide a reference for improving the intrinsic safety of high-grade pipeline girth weld.(9 Figures, 5 Tables, 117 References)
作者
张宏
吴锴
冯庆善
隋永莉
王东营
戴联双
刘啸奔
江金旭
张东
王冲
ZHANG Hong;WU Kai;FENG Qingshan;SUI Yongli;WANG Dongying;DAI Lianshuang;LIU Xiaoben;JIANG Jinxu;ZHANG Dong;WANG Chong(College of Mechanical and Transportation Engineering,China University of Petroleum(Beijing);Hefei General Machinery Research Institute;China Oil&Gas Pipeline Network Corporation;China Petroleum Pipeline Research Institute Co.Ltd.;Technical Center,PipeChina Beijing Pipeline Company)
出处
《油气储运》
CAS
北大核心
2022年第5期481-497,共17页
Oil & Gas Storage and Transportation
基金
国家石油天然气管网集团有限公司科学研究与技术开发项目“高钢级管道环焊缝失效机理研究”,WZXGL202105。
关键词
高钢级
管道
环焊接头
力学性能
适用性评价
high-grade steel
pipeline
girth weld
mechanical properties
fitness-for-service assessment
