摘要
海底管道是海上油气资源集输、外输的主要手段。对于建成的海底管道,由于投产后输送介质的变化、腐蚀、渔业捕捞、过往船只拖/抛锚等活动,使管道局部产生应力集中现象,发生裂纹并导致裂纹扩展,从而带来油气停产等重大经济损失。因此对海底管道裂纹损伤强度的评估是非常重要的。介绍了通用的结构失效评估图(FAD)技术,详细阐述了规范BS7910—1999裂纹损伤强度评估二级评定方法的运用,并依据规范编写了海底管道裂纹损伤强度评估系统。采用该评估系统,可快速评价已发生裂纹是否能够继续满足强度要求。
Submarine pipeline is the main tool for the transportation and exporting of offshore oil and gas resource. The working pipeline would suffer stress concentration and occurrence of crack, which may lead to crack propaga- tion, due to the change of transmission medium, corrosion, fishing, dragging anchors and other activities. It is very important to evaluate the strength of the submarine pipeline with crack damage. General structure failure assessment diagram （FAD） technology and application of level 2 evaluation method in the specification BS7910--1999 are introduced. An evaluation system is developed according to BS7910--1999. Case study shows that this system can be used to quickly assess the strength of pipeline with crack damage.
出处
《海洋工程装备与技术》
2016年第1期12-19,共8页
Ocean Engineering Equipment and Technology
