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    含腐蚀缺陷油气管道剩余强度的评价方法对比

    Comparison of Evaluation Methods for Residual Strength of Oil and Gas Pipeline with Corrosion Defects

    • 摘要: 对油气管道腐蚀缺陷进行评估是保证管道安全性的必要措施。收集国内外全尺寸管道压力爆破数据,建立了管道爆破压力数据库,将各种评价方法的计算结果与试验爆破压力进行对比。从管道强度、缺陷长度两个方面比较各种评价方法的适用性、精确度;汇总对比结果,结合有限元分析方法,提出了腐蚀管道剩余强度评价的优化选择模型。

       

      Abstract: Evaluating corrosion defects of oil and gas pipelines is a necessary measure to ensure pipeline safety. The pressure burst data of domestic and foreign full-size pipelines were collected, and the pipeline burst pressure database was established. The calculation results of different evaluation methods were compared with the test blasting pressures. And the applicability and accuracy of each evaluation method were compared from two aspects of pipeline strength and defect length. Based on the comparison results and the finite element analysis method, an optimal selection model for residual strength evaluation of corroded pipelines was proposed.

       

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