基于美标体系的海底管道在位强度工程分析

Engineering analysis for in-place strength of subsea pipelines based on American Standard System

为了满足东南亚及北美地区海洋油气田开发工程中必须使用美标体系进行工程设计的要求,便于海洋工程设计单位准确合理地使用美标规范对海底管道强度进行工程分析,根据最新版的ASME B31.8-2012和API RP 1111-2009等美标规范,系统地研究了海底管道在位强度的计算方法和应力校核准则,并详细阐述了海管壁厚计算、地震分析和海管路由弯曲等条件下的海底管道在位强度工程分析方法,明确了各种条件的设计系数选择情况。在印度尼西亚地区的实际工程项目中,依据美标规范完成了海底管道的在位强度校核分析,获得了合理的计算结果并通过了海外业主的认可,为东南亚等地区的海底管道工程设计校核工作提供了参考。

All offshore oil and gas development projects in Southeast Asia and North America areas are required to be designed in accordance with American Standard System. Accordingly, all offshore engineering design institutes are required to use American Standards accurately and properly to perform engineering analysis for strength of subsea pipelines. With consideration to latest editions of ASME B31.8-2012, API RP 1111-2009 and other codes, this paper systematically reviewed on-position strength calculation method and stress calibration principles for subsea pipelines. In addition, methods for calculation of wall thickness, earthquake analysis, together with engineering analysis for on-position strength of subsea pipelines under curved routes and other conditions have been introduced. Furthermore, proper design coefficients for such conditions have been highlighted. On-position strength calibration and analysis have been performed for subsea pipelines by using American Standards for a project in Indonesia. Resulting conclusions have gained acknowledgement of overseas clients. Such researches may provide valuable references for engineering design and calibration of subsea pipelines in Southeast Asia and other regions. （3 Tables, 10 References）