基于爆破试验数据对腐蚀管道剩余强度评定方法验证.pdf

　试 　验 　研 　究　 基于爆破试验数据对腐蚀管道 剩余强度评定方法的验证 帅 　健 ,张春娥 ,陈福来 ( 中国石油大学 ,北京 　102249) 摘 　要 :为验证腐蚀管道的剩余强度评价方法 ,收集了63 组腐蚀缺陷管道全尺寸爆破试验结果 。基 于这些全尺寸爆破试验数据 ,分别使用 ASME B31G、DNV RP - F101 及 PCORRC 等评定方法计算管 道失效压力 ,并用图表定量地示出各种方法的计算误差 。结果表明 ,ASME B31G 有很强的保守性 , 但这种方法在预测中高强度等级管道的剩余强度时也会出现不安全的评价结论 。DNV RP - F101 及 PCORRC 两种方法的差别不大 ,其保守性也较小 , 比较适用于中高强度等级的管道的剩余强度评 价 。但这两种方法在应用于中、低强度等级的管道时 ,都会产生不安全的评价结果 。PCORRC 的评 价结果略好于 DNV - RP - F101 方法 。应发展中高强度等级管道的缺陷安全评定方法 。 关键词 :腐蚀 ;管道 ;剩余强度 ;评定方法 ;缺陷 ( ) 中图分类号 :TQ0558 ;TQ0502 　　文献标识码 :A 　　文章编号 :1001 - 4837 2006 10 - 0005 - 04 Validation of Assessment Method for Remaining Strength of Corroded Pipeline Based on Burst Test Data SHUAI Jian , ZHANG Chun - e , CHEN Fu - lai (China University of Petroleum , Beij ing 102249 ,China) Abstract :63 sets of data about full - scale burst test of pipe with a defect were collected to validate the assess ment method about the remaining strength of corroded pipelines Based on these full - scale burst test data , the failure pressure were computed by ASME B31G、DNV RP - F101 and PCORRC , respectively The computa tion errors were showed in the charts By comparison , it is concluded that ASME B31G has great conservation , but it is sometime unsafe for medium high strength pipelines DNV RP - F101 and PCORRC are almost similar and little conversation in calculating the remaining strength of corroded pipelines They are suitable for medium high strength pipelines. However both of them result in the unsafe evaluation for low to medium stre