含体积型缺陷集输管道剩余强度评价方法适用性  

Applicability of Residual Strength Evaluation Method for Gathering and Transportation Pipelines with Volume Defects

作　　者：韩冰[1] 季蓓蕾 付强[1] 张欣亮 HAN Bing;JI Beilei;FU Qiang;ZHANG Xinliang(China National Institute of Standardization,Beijing 100191,China;National Engineering Laboratory for Pipeline Safety,China University of Petroleum-Beijing,Beijing 102249,China)

机构地区：[1]中国标准化研究院,北京100191 [2]中国石油大学(北京)油气管道输送安全国家工程实验室,北京102249

出　　处：《腐蚀与防护》2025年第3期91-98,共8页Corrosion & Protection

基　　金：国家重点研发计划课题(2022YFF0609602);中国标准化研究院基本科研业务费项目(602023Y-10399)。

摘　　要：基于径厚比为13~20的管道内压爆破试验数据,建立了含腐蚀缺陷集输管道数值计算模型的失效判定准则,并开展了不同缺陷尺寸条件下三种标准评价方法的适用性对比分析;在此基础上,基于交叉验证优化的支持向量机(CV-SVM)算法,建立了集输管道失效压力预测模型,对比分析了预测模型与标准方法的预测效果。结果表明:不同缺陷长度、深度及宽度下,DNV-RP-F101标准方法适用于径厚比较小的集输管道,但当缺陷长度小于1D(D为管道外径)时,该方法不具有保守性,推荐采用PCORRC标准方法。相比于标准方法,预测模型的准确率提高了3.11%,适用于含腐蚀缺陷集输管道工程适用性评估。Based on the internal pressure blasting test data of the pipeline with a diameter-to-thickness ratio of 13-20,the failure criteria of the numerical calculation model of the gathering pipeline with corrosion defects were established,and the applicability of the three standard evaluation methods under different defect sizes was compared and analyzed.On this basis,based on the cross-validation optimized support vector machine(CV-SVM)algorithm,the failure pressure prediction model of gathering pipeline was established,and the prediction effect of the prediction model and the standard method was compared and analyzed.The results show that DNV-RP-F101 standard method was suitable for gathering and transportation pipelines with relatively small diameter thickness under different defect lengths,depths and widths.However,when the defect length was less than 1D(D was the outer diameter of the pipe),this method becomes conservative,and PCORRC standard method was recommended.Compared with standard methods,the accuracy of the prediction model increased by 3.11%which was suitable for the failure prediction of the gathering and transportation pipeline with corrosion defects.

关 键 词：集输管道 内腐蚀 失效准则 评价方法 预测模型 

分 类 号：TG174[金属学及工艺—金属表面处理]