石油学报 ›› 2002, Vol. 23 ›› Issue (3): 86-90.DOI: 10.7623/syxb200203019

• 石油工程 • 上一篇    下一篇

输油管道参数的统计分析与安全评定

帅健, 许葵   

  1. 石油大学机电学院, 北京昌平, 102249
  • 收稿日期:2001-04-02 修回日期:2001-07-16 出版日期:2002-05-25 发布日期:2010-05-21
  • 作者简介:帅健,男,1963年8月生,1982年毕业于武汉化工学院化机专业,现为石油大学(北京)机电学院教授、博士生导师,从事工程力学和油气管道和储罐强度的科研与教学.
  • 基金资助:
    中国石油天然气集团公司石油中青年创新基金项目(CX1998-27).

Statistical analysis of parameters and safety assessment of oil pipeline

SHUAI Jian, XU Kui   

  1. University of Petroleum, China, Beijing 102249, China
  • Received:2001-04-02 Revised:2001-07-16 Online:2002-05-25 Published:2010-05-21

摘要: 为了确保管道的结构完整性,对一条含裂纹输油管道的失效概率进行了评定.分析了这条输油管道的主要结构与力学参数,确定了这些参数的概率特征.对管道上的表面半椭圆裂纹,利用失效评定图方法建立了管道断裂失效的极限状态函数,用Monte Carlo模拟方法求解失效概率.通过随机抽样计算,在失效评定图上直观地显示了评定点的随机分布情况,得到了管道母材和焊缝的失效概率,并表明了影响失效概率的敏感性因素.所提出的方法适用于油气管道的安全评定,具有工程实用价值.

关键词: 输油管道, 裂纹, 失效概率, 统计分析, 安全评定, 状态函数

Abstract: The assessment of failure probability for an oil pipeline containing cracks is made in order to assure safety of the pipeline.The probabilistic characteristics of the structural and mechanical parameters of the pipeline are reasonably determined by means of statistical analysis on these parameters.For the surface semi-elliptical crack existing in pipe,some limit state function expressions about pipeline fracture failure are established with the failure assessment diagram technique.The failure probability is solved by Monte-Carlo simulation.The random distribution of the assessment points in failure assessment diagram for oil pipeline is directly demonstrated with random sampling computation.Then failure probabilities of the pipe body and weld seams are determined,and the sensitive factors to failure probability are illustrated.The method presented above can be used in safety assessment of oil and gas pipelines and has a certain reference value in engineering practice.

Key words: oil pipeline, statistical analysis, crack, failure probability, safety assessment, state function

中图分类号: